WO2017101067A1 - 一种对周围环境音的处理方法及设备 - Google Patents
一种对周围环境音的处理方法及设备 Download PDFInfo
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- WO2017101067A1 WO2017101067A1 PCT/CN2015/097706 CN2015097706W WO2017101067A1 WO 2017101067 A1 WO2017101067 A1 WO 2017101067A1 CN 2015097706 W CN2015097706 W CN 2015097706W WO 2017101067 A1 WO2017101067 A1 WO 2017101067A1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
- G10K11/17823—Reference signals, e.g. ambient acoustic environment
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
- G10K11/17837—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by retaining part of the ambient acoustic environment, e.g. speech or alarm signals that the user needs to hear
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17853—Methods, e.g. algorithms; Devices of the filter
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
- G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3018—Correlators, e.g. convolvers or coherence calculators
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3025—Determination of spectrum characteristics, e.g. FFT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/01—Hearing devices using active noise cancellation
Definitions
- the present invention relates to the field of signal technologies, and in particular, to a method and device for processing ambient sound.
- Ambient Noise Cancellation (ANC) technology is a technology that can cancel the low-frequency noise in the surrounding environment when the user listens to the audio, thus producing a quiet listening experience. By counteracting the noise in the surrounding environment, the user can protect the hearing by making the volume smaller while listening clearly.
- the main sources of low- and medium-frequency noise in life are vehicles, fans, motors, and so on. Therefore, the active noise reduction function is mainly used in vehicles (such as airplanes, automobiles, buses, subways, trains, etc.), and may also be used in offices, factories, and the like.
- the noise canceling earphone produced by the active noise reduction technology in the prior art can effectively cancel the noise in the ambient sound, thereby enabling the user to listen to music with peace of mind.
- the noise canceling earphone of the prior art cancels all the sounds in the ambient sound, even the sounds of the car horn and the alarm for reminding the user, thus bringing a certain danger to the user.
- noise canceling headphones in various scenarios, and different scenarios may have different needs, such as the user needs to hear the sound of the car horn for reminding the user.
- the noise canceling earphones in the prior art merely reduce noise for all surrounding sounds, and cannot provide diverse services according to the scene in which the user is located.
- Embodiments of the present invention provide a method for processing ambient sounds, which is used to perform more accurate operations on ambient sounds based on a scene in which a user is located, so as to provide users with more accurate prompts and better services.
- the embodiment of the invention provides a method for processing ambient sounds, including:
- the post-operation signal is mixed with the audio signal played by the user equipment to obtain a composite signal, and the composite signal is output to the earphone.
- the time spectrum of the ambient sounds according to the preset duration is performed.
- the analysis further improves the accuracy of the recognition of the ambient sound; and according to the time spectrum of the ambient sound of the preset duration, when the matching scene is determined from the preset at least one scene, the user can be determined to be located
- the real scene is closest to the matching scene, and then operates according to the operation information corresponding to the matching scene, that is, according to the real scene in which the user is located, thereby realizing more accurate ambient sound according to the scene in which the user is located. Operation, to provide users with more accurate tips and better service purposes.
- the matching scene is determined from the time spectrum of the preset at least one scene according to the time spectrum of the ambient sound in the preset duration, and specifically includes:
- the time spectrum of the ambient sound within the preset duration and each field in the preset at least one scene The time-frequency spectrum of the scene is normalized and cross-correlated to obtain at least one cross-correlation value;
- the scenario corresponding to the largest cross-correlation value is determined as an alternative scenario; the candidate scenario is pre-configured with at least one feature spectrum; All or part of the spectrum in the time spectrum of the alternative scene;
- the candidate scene is determined to be a matching scene.
- each of the at least one characteristic spectrum may be determined from the time spectrum of the ambient sound within the preset duration according to the at least one characteristic spectrum corresponding to the preset candidate scene. The energy of the spectrum.
- the accuracy of the recognition of the surrounding environment sound can be improved, that is, the determined matching scene is closer to the real surrounding environment, and then the operation can be more accurate according to the operation information corresponding to the matching scene, thereby providing the user with more accuracy. Precise service.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound
- the operation signal is obtained, which specifically includes:
- the surrounding ambient sound is generated according to the subsequent received surrounding sound to be used for the subsequent received ambient sound drop.
- the inverted sound wave of the noise is used as the post-operation signal; wherein the preset frequency band is a preset frequency range of at least one noise.
- a prompt tone is determined from the preset database for storing the prompt sound, the prompt sound is mixed with the audio signal, and the mixed signal is input to the human ear.
- the person will hear the prompt tone, which will further increase the vigilance.
- the generated ambient sound is further denoised by the generated reversed sound wave.
- the sound outputted by the processing device is more prominent, that is, the noise of the ambient sound is degraded. Therefore, the user can further improve the alert tone that is heard by the user, thereby further increasing the vigilance of the user.
- the user can also hear the audio signal, which is not visible in the embodiment of the present invention.
- the prompt tone increases the user's vigilance, and the user cannot enjoy the audio signal. It can be seen that the user provides a more comfortable audio environment in the embodiment of the present invention.
- the to-be-executed operation information includes any one or a combination of any of the following:
- Signal enhancement processing is performed on ambient sounds, directions of ambient sounds are presented, speech recognition processing is performed on ambient sounds, and noise reduction of ambient sounds is performed.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound
- the operation signal is obtained, which specifically includes:
- the subsequently received ambient sound is filtered by a filter to obtain a filtered ambient sound, and the filtered ambient sound is used as an operational signal.
- the subsequently received ambient sound is filtered by the filter to obtain a filtered ambient sound to preserve part of the ambient sound that the user wishes to hear.
- the filtered signal is then input into the human ear, superimposed with the sound that can be heard by the user's ear, and the effect of highlighting part of the ambient sound that the user wishes to hear, that is, the wind sound heard by the user, The sound of the birds and the sounds of the insects will be enhanced.
- the user also listens to the beautiful sounds in the surrounding environment.
- the operation information to be executed and the subsequent received ambient sound, it also includes:
- the preset frequency band is a preset frequency range of at least one noise.
- the filtered signal is input into the human ear, and superimposed with the sound that can be heard by the user's ear, thereby exerting the effect of highlighting part of the ambient sound that the user wishes to hear, on the other hand, Due to the noise reduction of the ambient sound, the volume of the surrounding ambient sound that the user can hear is smaller, and the filtered surrounding ambient sound output by the processing device is highlighted, that is, the filtering that the user hears at this time. The ambient sound is more clear, which improves the user's feelings. At this time, the user can also hear the audio signal. It can be seen that the filtered ambient ambient sound is not sent to the user in the embodiment of the present invention. To make the user unable to enjoy the audio signal, it can be seen that the user provides a more comfortable audio environment in the embodiment of the present invention.
- the method further includes:
- the frequency response of the preset filter is compensated according to the frequency response preset by the filter and the frequency response of the inverted sound wave for subsequent noise reduction of the surrounding environment, and the compensated frequency response is obtained;
- the ambient sound in the preset frequency band in the ambient sound is filtered by the filter using the compensated frequency response to obtain a filtered ambient sound.
- the filtered signal is input into the human ear, superimposed with the sound that can be heard by the user's ear, and the effect of highlighting part of the ambient sound that the user wishes to hear, on the other hand, Due to the noise reduction of the ambient sound, the volume of the surrounding ambient sound that the user can hear is smaller, and the filtered ambient ambient sound output by the processing device is highlighted; further, the frequency response according to the filter preset And the frequency response of the inverted sound wave used for noise reduction of the surrounding ambient sound received, and the frequency response of the preset filter is compensated, so that the filtered ambient sound is effectively reduced by the inverted sound wave
- the effect, on the one hand, effective noise in the ambient sound Noise reduction is performed, and on the other hand, the sound that the user wants to hear in the ambient sound is enhanced. It can be seen that, in the embodiment of the present invention, the user does not enjoy the audio signal in order to send the filtered ambient sound, so that the user can provide a more comfortable audio environment in the embodiment of the present invention.
- the operation information to be executed includes a direction indicating a surrounding ambient sound
- the operation signal is obtained, which specifically includes:
- the left alarm sound is to be output to the left channel of the earphone, and the right alarm sound is output to the right channel of the earphone; and the left alarm sound and the right alarm sound As a post-operational signal;
- phase difference between the left alarm sound and the right alarm sound is received by the determined left ambient microphone and the subsequent received ambient sound received by the left pickup microphone
- the phase difference between ambient sounds is the same
- the difference between the amplitude of the left alarm tone and the right alarm tone and the subsequent received ambient sound received by the left pickup microphone and the subsequent received surroundings received by the right pickup microphone of the earphone The amplitude difference between the tones is the same.
- the position of the earphone of the earphone is very close to the position of the human ear.
- the ambient sound received by the left and right earplugs can be used to analyze the sound source, and then input to the left of the human ear.
- the phase difference and amplitude difference between the alarm tone and the right alarm tone are the same as the phase difference and amplitude difference between the real ambient sound and the left ear and the right ear. Therefore, the user can press the left alarm tone and the right alarm.
- the prompt tone determines the direction of the prompt tone and improves the user experience.
- the operation information to be executed includes performing voice recognition processing on the ambient sound
- the operation signal is obtained according to the to-be-executed operation information and the subsequent received ambient sound, and the post-operation signal is obtained, which specifically includes any one or a combination of the following:
- Performing voice recognition on the ambient sound determining a virtual prompt sound corresponding to the recognized voice according to the recognized voice, and using the virtual prompt sound as an operation signal; thus, the voice can be more clearly The user feeds back the voice information in the ambient sound.
- the translation of the recognized language can be implemented by the translation software to provide a more diverse service for the user.
- the voice can also be recorded and saved.
- the method further includes:
- the text information corresponding to the language form is displayed on the user device.
- the user may be alerted to the recognized voice by ringing or vibrating the user device.
- the recognized human voice is displayed on the screen of the user's mobile phone, so that the user can more clearly determine the voice content in the ambient sound, and can better perform diversity for the hearing impaired person. service.
- the operation information to be executed includes noise reduction processing on the surrounding environment
- the operation signal is obtained, which specifically includes:
- an inverted sound wave for noise reduction of the received surrounding ambient sound is generated, and the inverted sound wave is used as the post-operation signal.
- the processing device Since the reversed sound wave is generated according to the received ambient sound, the processing device outputs the reversed sound wave to the human ear, so that the reversed sound wave cancels with the ambient sound entering the human ear, thereby realizing noise reduction. effect.
- the generation and transmission of inverted sound waves can be achieved through a specially designed hardware channel.
- determining, according to the ambient ambient sound within the preset preset duration, the time spectrum of the ambient ambient sound within the preset duration includes: determining that the earphone is worn on the user's head.
- the processing device receives the sound of the synthesized signal received by the left feedback microphone and the right feedback microphone mixed with the ambient sound heard by the human ear, and the received composite signal and the ambient sound heard by the human ear
- the mixed sound is analyzed, and the post-operation signal is adjusted according to the obtained analysis result, and the adjusted operation signal is mixed with the audio signal played by the user equipment to obtain the corrected composite signal, and the corrected composite signal is output.
- the headset receives the sound of the synthesized signal received by the left feedback microphone and the right feedback microphone mixed with the ambient sound heard by the human ear, and the received composite signal and the ambient sound heard by the human ear
- the mixed sound is analyzed, and the post-operation signal is adjusted according to the obtained analysis result, and the adjusted operation signal is mixed with the audio signal played by the user equipment to obtain the corrected composite signal, and the corrected composite signal is output.
- the headset receives the sound of the synthesized signal received by the left feedback microphone and the right feedback microphone mixed with the ambient sound heard by the human ear, and the received composite
- the noise reduction effect of the ambient sound heard by the human ear can be better, and the user can enjoy the music or other audio in the audio signal, thereby further improving the user experience.
- An embodiment of the present invention provides a processing device for processing ambient sounds, including:
- a receiving unit configured to receive ambient sounds
- a determining unit configured to determine a time spectrum of ambient sounds within a preset duration according to the ambient sounds in the preset preset duration; and at least one preset according to a time spectrum of ambient sounds within a preset duration In the time spectrum of the scene, the matching scene is determined; the operation information corresponding to the matching scene is determined as the operation information to be executed; wherein the time spectrum of the matching scene matches the time spectrum of the ambient environment sound within the preset duration;
- a processing unit configured to perform operation according to the to-be-executed operation information and the subsequently received ambient sound, and determine the post-operation signal
- a synthesizing unit configured to mix the post-operation signal with an audio signal played by the user equipment to obtain a composite signal
- a sending unit for outputting the composite signal to the earphone.
- the time spectrum of the ambient sounds according to the preset duration is performed.
- the analysis further improves the accuracy of the recognition of the ambient sound; and according to the time spectrum of the ambient sound of the preset duration, when the matching scene is determined from the preset at least one scene, the user can be determined to be located
- the real scene is closest to the matching scene, and then operates according to the operation information corresponding to the matching scene, that is, according to the real scene in which the user is located, thereby realizing more accurate ambient sound according to the scene in which the user is located. Operation, to provide users with more accurate tips and better service purposes.
- the determining unit is specifically configured to:
- the scenario corresponding to the largest cross-correlation value is determined as an alternative scenario; the candidate scenario is pre-configured with at least one feature spectrum; All or part of the spectrum in the time spectrum of the alternative scene;
- the candidate scene is determined to be a matching scene.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound
- Processing unit specifically for:
- the preset frequency band included in the received ambient sound If the power value of the ambient sound in the preset frequency band included in the received ambient sound is greater than the power threshold, generating an inverted sound wave for noise reduction of the surrounding ambient sound according to the received surrounding ambient sound And the reversed sound wave is used as the post-operation signal; wherein the preset frequency band is preset to A frequency range with less noise.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound
- Processing unit specifically for:
- the processing unit is further configured to: after obtaining the signal after the operation, if the power value of the ambient sound in the preset frequency band included in the received ambient sound is greater than the power threshold, generate the subsequent ambient sound according to the subsequent Receiving the inverted sound wave of the ambient noise reduction, and using the inverted sound wave as the post-operation signal; wherein the preset frequency band is a preset frequency range of at least one noise.
- the processing unit is further configured to: before filtering the subsequently received ambient sound by the filter, obtaining the filtered ambient ambient sound, according to the preset frequency response of the filter, and for subsequently receiving The frequency response of the inversion sound wave of the ambient noise reduction compensates the frequency response of the preset filter to obtain the compensated frequency response; through the filter, the compensated frequency response is used to preset the ambient sound The ambient sound in the frequency band is filtered to obtain a filtered ambient sound.
- the operation information to be executed includes a direction indicating a surrounding ambient sound
- Processing unit specifically for:
- the left alarm sound is to be output to the left channel of the earphone, and the right alarm sound is output to the right channel of the earphone; and the left alarm sound and the right alarm sound As a post-operational signal;
- phase difference between the left alarm sound and the right alarm sound is received by the determined left ambient microphone and the subsequent received ambient sound received by the left pickup microphone
- the phase difference between ambient sounds is the same
- the difference between the amplitude of the left alarm tone and the right alarm tone and the subsequent received ambient sound received by the left pickup microphone and the subsequent received surroundings received by the right pickup microphone of the earphone The amplitude difference between the tones is the same.
- the operation information to be executed includes performing voice recognition processing on the ambient sound
- the processing unit is specifically configured to perform any one or a combination of the following:
- the processing unit is further configured to:
- the operation information to be executed includes noise reduction processing on the surrounding environment
- Processing unit specifically for:
- an inverted sound wave for noise reduction of the received surrounding ambient sound is generated, and the inverted sound wave is used as the post-operation signal.
- the synthesizing unit is configured to receive, by the receiving unit, the sound mixed by the synthesized signal received by the left feedback microphone and the right feedback microphone and the surrounding ambient sound heard by the human ear, and the received synthetic signal and the human ear
- the mixed ambient sound is analyzed, and the post-operation signal is adjusted according to the obtained analysis result, and the adjusted operation signal is mixed with the audio signal played by the user equipment to obtain the corrected composite signal, and the corrected composite signal is obtained.
- the corrected composite signal is output to the earphone through the transmitting unit.
- An embodiment of the present invention provides a processing device for processing ambient sounds, including:
- a processor configured to determine a time spectrum of ambient sounds within a preset duration according to ambient sounds within a preset duration received by the receiver; and presets according to a time spectrum of ambient sounds within a preset duration Determining a matching scene in the time spectrum of at least one scene; determining operation information corresponding to the matching scene as operation information to be executed; performing operation according to the to-be-executed operation information and the subsequently received ambient sound, and determining the operation signal; Mixing the operation signal with the audio signal played by the user equipment to obtain a composite signal, and outputting the composite signal to the earphone through the transmitter; wherein, the time spectrum of the matching scene matches the time spectrum of the ambient sound within the preset duration ;
- a transmitter for outputting the composite signal to the earphone under the control of the processor
- the memory is configured to store a time spectrum of the preset at least one scene, and match operation information corresponding to the scene.
- the time spectrum of the ambient sounds according to the preset duration is performed.
- the analysis further improves the accuracy of the recognition of the ambient sound; and according to the time spectrum of the ambient sound of the preset duration, when the matching scene is determined from the preset at least one scene, the user can be determined to be located
- the real scene is closest to the matching scene, and then operates according to the operation information corresponding to the matching scene, that is, according to the real scene in which the user is located, thereby realizing more accurate ambient sound according to the scene in which the user is located. Operation, to provide users with more accurate tips and better service purposes.
- the processor is specifically configured to:
- the scenario corresponding to the largest cross-correlation value is determined as an alternative scenario; the candidate scenario is pre-configured with at least one feature spectrum; All or part of the spectrum in the time spectrum of the alternative scene;
- the candidate scene is determined to be a matching scene
- the characteristic spectrum is: all or part of the spectrum included in the time spectrum of the ambient sound within the preset duration and the time spectrum corresponding to the candidate scene.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound
- the preset frequency band is a preset frequency range of at least one noise.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound
- the subsequently received ambient sound is filtered by a filter to obtain a filtered ambient sound, and the filtered ambient sound is used as an operational signal.
- the processor is specifically configured to:
- the operation signal is obtained according to the operation information to be executed and the subsequent ambient sound
- the operation signal is obtained, if the power value of the environmental sound in the preset frequency band included in the subsequently received ambient sound is greater than the power threshold, according to Subsequent received ambient sounds generate inverted sound waves for noise reduction of subsequent received ambient sounds, and the reversed sound waves are used as operational signals; wherein the preset frequency band is a preset frequency range of at least one noise .
- the processor is specifically configured to:
- the frequency response according to the filter preset, and the inverted sound wave used for noise reduction of the received surrounding ambient sound Frequency response compensate the frequency response of the preset filter, get Frequency response after compensation;
- the ambient sound in the preset frequency band in the ambient sound is filtered by the filter using the compensated frequency response to obtain a filtered ambient sound.
- the operation information to be executed includes a direction indicating a surrounding ambient sound
- the left alarm sound is to be output to the left channel of the earphone, and the right alarm sound is output to the right channel of the earphone; and the left alarm sound and the right alarm sound As a post-operational signal;
- phase difference between the left alarm sound and the right alarm sound is received by the determined left ambient microphone and the subsequent received ambient sound received by the left pickup microphone
- the phase difference between ambient sounds is the same
- the difference between the amplitude of the left alarm tone and the right alarm tone and the subsequent received ambient sound received by the left pickup microphone and the subsequent received surroundings received by the right pickup microphone of the earphone The amplitude difference between the tones is the same.
- the operation information to be executed includes performing voice recognition processing on the ambient sound
- the processor is specifically configured to perform any one or a combination of the following:
- the processor after performing operation according to the to-be-executed operation information and the subsequently received ambient sound, obtains the post-operation signal, and is further configured to:
- the operation information to be executed includes noise reduction processing on the surrounding environment
- an inverted sound wave for noise reduction of the received surrounding ambient sound is generated, and the inverted sound wave is used as the post-operation signal.
- the processor is configured to receive, by the receiver, a sound mixed by the synthesized signal received by the left feedback microphone and the right feedback microphone and the surrounding ambient sound heard by the human ear, and the received composite signal and the human ear
- the mixed ambient sound is analyzed, and the post-operation signal is adjusted according to the obtained analysis result, and the adjusted operation signal is mixed with the audio signal played by the user equipment to obtain the corrected composite signal, and the corrected composite signal is obtained.
- the corrected composite signal is output to the earphone through the transmitter.
- the time spectrum of the ambient sound in the preset duration is determined according to the ambient sound in the preset preset duration; and the preset frequency is based on the time spectrum of the ambient sound within the preset duration
- a matching scene is determined, wherein the time spectrum of the matching scene matches the time spectrum of the ambient sound in the preset duration; the operation information corresponding to the matching scene is determined as the operation information to be executed; The operation information and the subsequent received ambient sound are operated to determine the post-operation signal; the post-operation signal is mixed with the audio signal played by the user equipment to obtain a composite signal, and the synthesized signal is output to the earphone.
- the time spectrum of the ambient sounds according to the preset duration is performed.
- the analysis further improves the accuracy of the recognition of the ambient sound; and according to the time spectrum of the ambient sound of the preset duration, when the matching scene is determined from the preset at least one scene, the user can be determined to be located
- the real scene is closest to the matching scene, and then according to the matching scene pair
- the operation information is operated, that is, according to the real scene in which the user is located, it is possible to perform more accurate operations on the ambient sound according to the scene in which the user is located, to provide more accurate prompts and better for the user.
- the purpose of the service is, according to the real scene in which the user is located, it is possible to perform more accurate operations on the ambient sound according to the scene in which the user is located, to provide more accurate prompts and better for the user.
- 1a is a schematic diagram of a system architecture applicable to an embodiment of the present invention
- Figure 1b is a schematic diagram of an equivalent circuit diagram of the system architecture shown in Figure 1a;
- FIG. 2 is a schematic flowchart of a method for processing ambient sounds according to an embodiment of the present invention
- 2a is a schematic diagram of a time spectrum according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a processing device for processing ambient sounds according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of another processing device for processing ambient sounds according to an embodiment of the present invention.
- FIG. 1a exemplarily shows a schematic diagram of a system architecture to which an embodiment of the present invention is applied.
- the system architecture includes a user equipment 103, an earphone 102, and a processing device 104.
- the processing device 104 can be integrated in the headset 102, the processing device 104 can also be integrated in the user device 103, or the processing device 104 can be present independently of the headset 102 and the user device 103.
- the earphone 102 is divided into a left side and a right side, and the left side of the earphone includes a left speaker 108 and a left pickup microphone 109, and the right side of the earphone
- the right speaker 105 and the right pickup microphone 106 are included.
- the left side of the earphone further includes a left feedback microphone 110
- the right side of the earphone further includes a right feedback microphone 107.
- the user equipment 103 inputs the audio signal played by the user equipment 103 to the processing device 104.
- the processing device 104 also receives the ambient sound 101 through the left pickup microphone 109 and the right pickup microphone 106, and determines the operation information to be executed according to the received ambient sound, and performs according to the operation information to be executed and the received ambient sound. Operation to determine the signal after the operation.
- the to-be-executed operation information includes a combination of any one or any of a signal enhancement process for the ambient sound, a direction of the ambient sound, a voice recognition process for the ambient sound, and a noise reduction process for the ambient sound.
- the processing device mixes the post-operation signal with the audio signal of the user equipment 103 to obtain a composite signal, and inputs the composite signal into the left speaker 108 and the right speaker 105, respectively, so that the user hears the synthesized signal.
- the processing device 104 may receive the sound output from the left speaker 108 through the left feedback microphone 110, and receive the sound output from the right speaker 105 through the right feedback microphone 107, since the left feedback microphone 110 is located at the ear and the left speaker 108. Therefore, the sound received by the left feedback microphone 110 is the sound heard by the left ear of the person; since the right feedback microphone 107 is located between the ear and the right speaker 105, the sound received by the right feedback microphone 107 is the right of the person.
- the processing device can adjust the synthesized signal according to the sound received by the left feedback microphone 110 and the right feedback microphone 107 to improve the quality of the synthesized signal heard by the user, and further improve the user's feeling.
- the ambient sound first passes through the right pickup microphone 106, then passes through the right speaker 105, and finally passes through the right feedback microphone 107. Since the ambient sound 101 enters the person's ear through the earphone, the volume is attenuated, so the right pickup microphone 106 is located outside the speaker and can be used to receive a clearer ambient sound that has not yet entered the earphone. Moreover, since there is almost no obstruction on the outside of the right pickup microphone 106, the ambient sound can be better collected. Similarly, the ambient sound passes through the left pickup microphone 109, then the left speaker 108, and finally the left feedback microphone 110.
- the left pickup microphone 109 Since the ambient sound 101 enters the person's ear through the earphone, the volume is attenuated, so the left pickup microphone 109 is located outside the speaker and can be used to receive a clearer ambient sound that has not yet entered the earphone. And because there is almost no obstruction on the outside of the left pickup microphone 109, it can have a good collection effect on the surrounding environment sound.
- FIG. 1b exemplarily shows an equivalent circuit diagram of the system architecture shown in FIG. 1.
- the system can be divided into two parts, an acoustic part 111, and an electrical part 112.
- the ambient sound 101 is transmitted to the left ear by spatial propagation, which is equivalent to the ambient sound 101 passing through a filter associated with the headphone structure, and the sound of the ambient sound 101 passing through the earphone into the left ear is weakened.
- the ambient sound 101 is received by the left pickup microphone 109 and input to the processing device 104 for performing a series of operations.
- the processing device receives the ambient sounds input by the left pickup microphone 109 and the right pickup microphone 106, and performs a After the series of operations, the post-operation signal is obtained, and the post-operation signal is mixed with the audio signal to obtain a composite signal, and the composite signal is input to the left speaker 108 and the right speaker 105, respectively.
- the processing device 104 outputs an electrical signal, converts the received electrical signal into a sound signal through the left speaker 108, and superimposes the converted sound signal with the surrounding ambient sound of the through-headphone through spatial propagation, thereby becoming the user finally listening. The sound that comes.
- a left feedback microphone 110 is disposed on the ear side of the earphone head, and the sound signal finally heard by the user is collected, and the sound signal finally heard by the collected user is fed back to the processing device, so that the processing device performs Adjust so that the sound signal that the user finally hears achieves better results.
- the user equipment involved in the embodiment of the present invention is a device capable of playing audio, such as a handheld device capable of playing audio, an in-vehicle device, a wearable device, a computing device, and various forms of user equipment (User Equipment, UE for short).
- a mobile phone a tablet, a Moving Picture Experts Group Audio Layer 3 (MP3), a Moving Picture Experts Group Audio Layer 4 (MP4), Radio, tape recorder, etc.
- MP3 Moving Picture Experts Group Audio Layer 3
- MP4 Moving Picture Experts Group Audio Layer 4
- Radio tape recorder
- the audio played by the user equipment in the embodiment of the present invention is music, audio novels, audio of entertainment programs, and the like that the user desires to hear.
- the audio is processed by the processing device 104, enters the left ear of the person via the left speaker 108, and enters the right ear of the person through the right speaker 105.
- the processing device 104 in the embodiment of the present invention may be the processing device 400 in FIG.
- the processing device 104 is configured to combine an algorithm to analyze a time spectrum of ambient sounds according to a preset duration, perform some operations, and input a synthetic signal. number.
- the processing device 400 of FIG. 4 includes a processor 401, which may be a central processing unit (CPU) or a digital signal processor (DSP).
- the processing device 400 in FIG. 4 includes a processor 401 which may be a processor embedded inside the helmet-type earphone; or an external processor connected to the earphone; or an internal processing of the user equipment for playing an audio signal.
- the processor on the user equipment for playing the audio signal can analyze and operate the ambient sound through a customized earphone plug or an interface protocol chip.
- FIG. 2 illustrates a method for processing ambient sounds that can be performed by the processing device provided by the embodiment of the present invention.
- the processing device 400 in particular, the processor 401 in the processing device 400 reads the program stored in the memory 402, and cooperates with the receiver 403 and the transmitter 404 to execute the method flow described below. include:
- Step 201 The processing device determines a time spectrum of ambient ambient sounds within a preset duration according to ambient ambient sounds within a preset duration received by the processing device.
- Step 202 The processing device determines, according to a time spectrum of the ambient sound in the preset duration, a matching scene from the time spectrum of the preset at least one scene, where the time spectrum of the matching scene and the surrounding environment within the preset duration are determined. Time-frequency spectrum matching of the sound;
- Step 203 The processing device determines the operation information corresponding to the matching scenario as the operation information to be executed.
- Step 204 The processing device performs operations according to the to-be-executed operation information and the subsequent received ambient sound, and determines the post-operation signal;
- Step 205 The processing device mixes the post-operation signal to the composite signal, and outputs the synthesized signal to the earphone; wherein the synthesized signal includes at least the audio signal played by the user through the user equipment.
- the processing device periodically performs the foregoing step 201 to the foregoing step 203 on the received ambient sound, and in each period, the processing device determines according to the surrounding ambient sound within the preset preset duration. After the operation information is to be executed, it can be determined according to the current period. The pending operation information is operated on the subsequent received ambient sounds in the current period until the next cycle. For example, in the first time in the first period, the processing device performs the above step 201 to the above step 203 on the ambient sound within the preset duration received from the first time in the first period, and determines The first to-be-executed operation information is obtained.
- the operation information to be executed is a voice recognition process on the surrounding ambient sound.
- the subsequent received ambient sound is voiced.
- the process is identified and the recognized speech is determined as a post-operational signal.
- the operation information to be executed is noise reduction processing on the surrounding environment
- an inverted sound wave for canceling the subsequent received ambient sound is generated, and The generated inverted sound wave is determined to be a post-operational signal.
- the processing device performs the above step 201 to the above step 203 for the surrounding ambient sound received from the first time in the second period, and determines the second to-be-executed operation information.
- the operation signal is determined according to the second to-be-executed operation information and the subsequent received ambient sound, and the post-operation signal is determined.
- the time spectrum of the ambient sounds according to the preset duration is performed.
- the analysis further improves the accuracy of the recognition of the ambient sound; and according to the time spectrum of the ambient sound of the preset duration, when the matching scene is determined from the preset at least one scene, the user can be determined to be located
- the real scene is closest to the matching scene, and then operates according to the operation information corresponding to the matching scene, that is, according to the real scene in which the user is located, thereby realizing more accurate ambient sound according to the scene in which the user is located. Operation, to provide users with more accurate tips and better service purposes.
- the processing device determines the to-be-executed operation information by using the foregoing steps 201 to 203, and specifically includes: the processing device according to the embodiment of the present invention, according to the time spectrum of the ambient ambient sound of the preset duration, from at least one preset A matching scene is determined in the scenario, and the time spectrum of the matching scene matches the time spectrum of the surrounding ambient sound in the preset duration. At this time, the operation information corresponding to the matching scene is determined as the operation information to be executed.
- Another implementation manner is further provided in the embodiment of the present invention, and may be preset in a preset manner.
- One or more working modes, and the operation information corresponding to each working mode is determined as the operation information to be executed.
- some switches may be provided for the user to flexibly turn on or off one or more working modes through the switches.
- control information is obtained from the memory, such as which working modes the user has previously turned on.
- the working modes that can be turned on and off include: scene recognition working mode, signal enhancement processing mode for ambient sound, direction working mode for surrounding ambient sound, speech recognition processing mode for ambient sound, ambient sound Noise reduction processing mode and so on. The user can start any one or more of the above modes of operation.
- the preset working mode is entered, and corresponding operation information is determined in each working mode, and is taken as operation information to be executed. Specifically, if the user turns on the scene recognition mode in advance, the processing device performs the above steps 201 to 203, and determines the operation information corresponding to the matching scene as the operation information to be executed. If the user performs the signal enhancement processing mode on the ambient sound in advance, the operation information to be executed is signal enhancement processing on the ambient sound. If the user has previously turned on the direction working mode prompting the ambient sound, the operation information to be executed is the direction of the ambient sound. If the user has previously opened the voice recognition processing mode for the ambient sound, the operation information to be executed is a voice recognition process for the ambient sound. If the user has previously turned on the ambient noise reduction processing mode, the operation information to be executed is noise reduction processing for the surrounding environment.
- the processing device when the scene recognition working mode is turned off, the processing device does not perform the foregoing steps 201 to 203 on the received ambient sound, and only works according to other working modes preset by the user, or Under the user's setting, the ambient sound is not processed, and only the audio signal is output.
- the scene recognition working mode is opened in advance by the user as an example.
- the memory also stores various parameters used in the process of processing the ambient sound, such as parameters of the filter and the like. These parameters can be modified by the user or by default.
- step 201 after the processing device is started, it is determined whether the earphone is worn on the user's head. If the earphone is not worn on the head, the user may remove the earphone, and the surrounding environment is not The sound is processed. When it is determined that the earphone is worn on the user's head, step 201 is performed. In this way, when the user does not wear the headset, the processing of the surrounding ambient sound can be stopped, thereby reducing energy consumption and saving resources.
- whether the earphone is worn on the user's head can be determined by setting a sensor on the earplug head of the earphone, and the earplug head of the earphone is a portion where the earphone contacts the ear of the user.
- the ambient sounds heard by both ears may be analyzed in combination with an algorithm, such as an algorithm based on a Head Related Transfer Function (HRTF).
- HRTF Head Related Transfer Function
- the processing device performs frame processing on the surrounding ambient sound within the preset preset duration, and divides the surrounding ambient sound into audio frames.
- An audio frame is a basic unit for processing, and typically takes 10 milliseconds (millisecond, referred to as ms) or 20 ms of data.
- Each audio frame obtains the spectrum of the audio frame by some operations, such as Fast Fourier Transformation (FFT) operations.
- FFT Fast Fourier Transformation
- the granularity of the spectral frequency domain can be chosen according to the complexity of the system and the required accuracy, for example 256 points.
- the spectrum of the audio frame and the spectrum of the plurality of previously stored audio frames together constitute a time spectrum of the ambient sound within the received preset duration.
- each scene is pre-stored or pre-configured locally or in the cloud
- each scene includes a time spectrum
- each scene corresponds to a different time spectrum
- each scene includes a time spectrum including N cores.
- the frequency that is, the probability that the N core frequencies exist in the scene is relatively large.
- each scene further corresponds to at least one feature spectrum, and the feature spectrum is part or all of N core frequencies, where N is a positive integer.
- the scene 1 is a road
- the core frequency included in the time spectrum of the scene 1 includes the frequency of the motor sound, the human voice, and the horn sound.
- the characteristic spectrum can be the sound with the largest proportion in the scene, on the road.
- the motor sound must have a large proportion.
- the characteristic spectrum is the motor sound in the core spectrum, or the characteristic spectrum is the motor sound and the horn sound, or the characteristic spectrum is all the spectrum in the core frequency, that is, the characteristic spectrum is the motor sound. , the frequency of vocals and horns.
- the corresponding operation information is pre-set for each scene.
- the scene is a road, because there is a horn sound on the road, and people need to pay attention. Therefore, the corresponding operation information of the preset scene may be signal enhancement to the ambient sound. deal with.
- the time spectrum in the embodiment of the present invention is the frequency of each sound in the ambient sound received by the user in a period of time.
- FIG. 2a exemplarily shows a schematic diagram of a time spectrum, as shown in FIG. 2a, the horizontal axis in the time spectrum.
- the vertical axis is the frequency axis, and the different shades of color represent For each different sound, one or several sounds with a large proportion can be seen from the time spectrum.
- the matching scenario is specifically determined by the following steps:
- the time spectrum of the ambient sound within the preset duration received by the processing device is normalized and cross-correlated with the time spectrum of each scene in the preset at least one scene to obtain at least one cross-correlation value.
- Normalized Correlation may also be referred to as a normalized cross-correlation matching algorithm.
- the normalized cross-correlation matching algorithm is a classical statistical algorithm.
- the cross-correlation values of the two images determine the degree of matching of the two images.
- a machine learning algorithm, or a more complex artificial neural network may be used to match the surrounding environment to the matching scene.
- the scenario corresponding to the largest cross-correlation value is determined as an alternative scenario; the candidate scenario is pre-configured with at least one feature spectrum; The total spectrum or part of the spectrum in the time spectrum of the candidate scene; determining the energy of each of the at least one characteristic spectrum from the time spectrum of the ambient sound within the preset duration; according to the circumference within the preset duration The energy of each characteristic spectrum in the ambient sound determines the average energy of all the characteristic spectra in the ambient sound within the preset duration; when it is determined that the average energy is greater than the energy threshold, the candidate scene is determined as the matching scene.
- the surrounding The time spectrum of the ambient sound must also include the N core frequencies corresponding to the candidate scene.
- the core frequency corresponding to the alternative scene is the frequency of the motor sound, the horn sound, and the human voice.
- the time spectrum of the ambient sound includes the frequency of the motor sound, the horn sound, and the human voice.
- the cross-correlation value of the time spectrum of the ambient sound and the time spectrum of the candidate scene can be greater than the cross-correlation threshold, that is, at this time, the time spectrum of the ambient sound can match the time spectrum of the alternative scene.
- the feature spectrum corresponding to the candidate scene is part or all of the N core frequencies corresponding to the candidate scene, the time spectrum of the ambient sound must also include the feature spectrum corresponding to the candidate scene. Therefore, after the candidate scene is determined, at least one special corresponding to the preset candidate scene may be The spectrum is characterized by determining the energy of each of the at least one characteristic spectrum from the time spectrum of the ambient sound within the preset duration.
- the maximum cross-correlation value of the at least one cross-correlation value is not greater than the cross-correlation threshold, it indicates that a matching matching scenario is not determined for the real scene where the user is currently located. Or, if the maximum cross-correlation value of the at least one cross-correlation value is greater than the cross-correlation threshold, but the average energy of all the characteristic spectra in the ambient sound is not greater than the energy threshold, it indicates that one of the real scenes currently occupied by the user is not determined. Matching matching scenes.
- the cross-correlation threshold and the energy threshold in the embodiments of the present invention are both conventional experience values.
- the spectrum is normalized and cross-correlated, and the candidate scene is determined from the time dimension and the sound type included in the ambient sound, and then according to the characteristic spectrum included in the ambient sound.
- the energy is greater than the energy threshold, that is, whether the intensity of the sound corresponding to the characteristic spectrum in the ambient sound is sufficiently large, so that the matching degree between the matching scene and the real scene where the user is located can be further improved, that is, the matching scene is further improved.
- the operation information corresponding to the matching scenario is determined as the to-be-executed operation information
- the to-be-executed operation information includes any one or a combination of the following: performing signal enhancement processing on the ambient sound , prompting the direction of the surrounding ambient sound, performing speech recognition processing on the surrounding ambient sound, and noise-reducing the surrounding ambient sound.
- the operation information to be executed includes noise reduction processing on the surrounding environment; then, the processing device generates an inverted sound wave according to the surrounding ambient sound received by the processing device, and uses the reversed sound wave as an operation signal, and the reversed sound wave
- the sound signal is mixed to obtain a composite signal, and the synthesized signal is output to the human ear, and the inverted sound wave included in the synthesized signal is used to cancel the ambient sound received by the human ear, thereby achieving the noise reduction effect.
- the corresponding operation information in the preset scene may be noise reduction processing on the surrounding environment.
- the processing device Since the reversed sound wave is generated according to the received ambient sound, the processing device outputs the reversed sound wave to the human ear, so that the reversed sound wave cancels with the ambient sound entering the human ear, thereby realizing noise reduction. effect.
- the generation and transmission of inverted sound waves can be achieved through a specially designed hardware channel.
- the earphone blocks the user's ear, and the user is not sensitive to the key sound in the ambient sound, thereby posing a safety hazard.
- key sounds include, not limited to, car horns, cue sounds, and shouts.
- the scene with such a key sound can be subjected to signal enhancement processing on the surrounding ambient sound, so that the user can also notice the key sound in the ambient sound while enjoying the audio signal.
- the operation information to be executed includes performing signal enhancement processing on the surrounding ambient sound, and determining, according to the subsequently received ambient sound, a prompt tone for reminding the user to pay attention to the subsequently received ambient sound, and using the prompt sound as an operation. After the signal.
- the operation information to be executed includes performing signal enhancement processing on the surrounding ambient sound, and determining, according to the subsequently received ambient sound, a prompt tone for reminding the user to pay attention to the subsequently received ambient sound, and using the prompt sound as an operation.
- a post signal and if the power value of the ambient sound in the preset frequency band included in the subsequently received ambient sound is greater than the power threshold, the inverted sound wave is generated according to the received surrounding ambient sound, and the inverted sound wave is taken as the operation a signal, wherein the preset frequency band is a preset frequency range of at least one noise.
- a prompt tone is determined from the preset database for storing the prompt sound, and the prompt sound and the audio signal are performed. Mixing and inputting the mixed signal to the human ear, the person will hear the prompt tone, which will increase the vigilance, thus improving the problem that the user is not sensitive to the key sound in the ambient sound after wearing the earphone.
- the preset frequency band is a predetermined frequency range of at least one noise
- the preset frequency band includes a frequency range of a motor sound of the automobile, a frequency range of the orbital sound of the subway, and the like.
- the power value of the ambient sound in the preset frequency band included in the subsequent received ambient sound is greater than the power threshold, the noise in the scene where the user is located is too large, and therefore, the inversion is generated according to the received surrounding ambient sound. Sound waves, and the reversed sound waves are used as operational signals.
- the processing device mixes the audio signal, the prompt sound, and the inverted sound wave to generate a composite signal, which is input to the human ear.
- the signal enhancement processing of the ambient sound in the second method includes two aspects: one is outputting a prompt sound for enhancing the ambient sound, and on the other hand, the noise reduction device in the processing device is enabled to generate an inverted sound wave, so as to The ambient sound received by the ear is noise-reduced.
- a prompt tone is output, which is used to enable the person to hear the prompt tone, thereby increasing vigilance, and on the other hand, by generating the inverted sound wave, further to the ambient sound Noise reduction is performed, and at this time, the prompt sound output by the processing device is more prominent, that is, the noise of the surrounding environment is further reduced, thereby further making the prompt sound heard by the user clearer, thereby enabling The user is more vigilant.
- the user can also hear the audio signal.
- the user does not send a prompt tone to increase the user's vigilance, and the user cannot enjoy the audio signal. It can be seen that the user in the embodiment of the invention provides a more comfortable audio environment.
- the prompt sounds in the embodiments of the present invention may be common warning sounds, such as some short audios that are easy to attract the attention of the user, such as beeps, drops, and the like.
- the prompt tone can also be a synthesized voice, such as a manual voice broadcast, please note that there is a car nearby.
- the prompt sound may also be a virtual background sound, such as a pre-stored horn sound, a bicycle bell sound, and the like, a virtual sound similar to that included in the ambient sound.
- the user can customize parameters such as the type and volume of the prompt tone.
- the operation information to be executed includes signal enhancement processing on the ambient sound
- at least a prompt sound is input into the human ear.
- the user prefers to hear a part of the sound in the surrounding scene sound. Based on this, the following optional implementation manners are provided in the embodiment of the present invention.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound; then filtering the subsequently received ambient sound through the filter to obtain the filtered ambient sound, and The filtered ambient sound is used as the post-operation signal.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound; filtering the subsequent received ambient sound through the filter to obtain the filtered ambient sound, and using the filtered ambient sound as an operation. a post signal, and if the power value of the ambient sound in the preset frequency band included in the subsequently received ambient sound is greater than the power threshold, the inverted sound wave is generated according to the received surrounding ambient sound, and the inverted sound wave is taken as the operation a signal, wherein the preset frequency band is a preset frequency range of at least one noise.
- the information to be executed includes performing signal enhancement processing on the ambient sound; filtering the subsequently received ambient sound through the filter to obtain the filtered ambient sound, and using the filtered ambient sound as an operation. After the signal. And if the power value of the ambient sound in the preset frequency band included in the received ambient sound is greater than the power threshold, generating an inverted sound wave according to the received surrounding ambient sound, and using the inverted sound wave as the operation signal, wherein
- the preset frequency band is a preset frequency range of at least one noise.
- the method further includes: performing frequency response according to the filter preset, and used for noise reduction of the received surrounding ambient sound
- the frequency response of the inverted sound wave compensates the frequency response of the preset filter to obtain the compensated frequency response; through the filter, the compensated frequency response is used to the ambient sound in the preset frequency band in the ambient sound Filtering is performed to obtain a filtered ambient sound.
- the subsequent received ambient sound is filtered by the filter to obtain the filtered ambient sound, so as to retain the user's desire to listen. Part of the surrounding ambient sound.
- the filtered ambient sound includes only the wind sound, the bird call, the insect sound, and the car motor sound is Filtered out.
- the filtered signal is input into the human ear. Superimposed with the sound that the user's ear can hear, which has the effect of highlighting part of the surrounding sound that the user wants to hear, that is, the sound of the wind, bird, and insect sound that the user hears is enhanced. So, while listening to music, the user also listened to the wonderful sound in the surrounding environment.
- the user listens to music in the park wearing headphones, and the user actually hears the superimposed result of the ambient sound transmitted through the earphone to the ear and the sound played in the earphone. Because the headphone speaker has limited capacity, and the volume is too loud, it will damage the user's hearing. Therefore, if there is a large noise in the ambient sound at this time, at this time, playing the prompt sound to the user or the filtered ambient sound will be affected by the surrounding environment. The interference of the sound. Based on the problem, in the fourth method, preferably, when the power value of the ambient sound in the preset frequency band is greater than the power threshold, the inverted sound wave for noise reduction is input, and thus, the ambient sound is simultaneously realized.
- the cancellation of the noise part for example, the motor sound of the car belongs to the ambient sound in the preset frequency band.
- the inverted sound wave output can cancel the sound of the car motor heard by the user, and achieve the purpose of noise reduction.
- the surrounding ambient sound is denoised, the volume of the ambient sound that the user can hear is smaller, and the filtered surrounding ambient sound output by the processing device is highlighted, that is, the user hears at this time.
- the filtered ambient sound is more clear, which improves the user's feeling, and the user can also hear the audio signal. It can be seen that the filtered ambient sound is not sent to the user in the embodiment of the present invention. In order to prevent the user from enjoying the audio signal, it can be seen that the user provides a more comfortable audio environment in the embodiment of the present invention.
- the signal after the operation includes the filtered ambient sound, and the reversed sound wave, according to the preset frequency response of the filter, and used for the subsequent received ambient sound drop.
- the frequency response of the inverse acoustic wave of the noise compensates the frequency response of the preset filter.
- Equation (1) H e (z) z-th preset ambient sound spectrum within a frequency band of ambient noise in the subsequently received; z is in the range [1, n]; n is ambient sound The total number of ambient tones in the preset frequency band included;
- w(z) is a weighting function of the zth ambient sound in the preset frequency band in the subsequent received ambient sound; w(z) may be valued according to a specific situation, such as the preset frequency band in the ambient sound
- S is the power value of the ambient sound in the preset frequency band included in the subsequent received ambient sound
- S th is the power threshold
- if S>S th the inverted sound wave is generated according to the subsequently received ambient sound.
- Hr(z) of the filter preset The user can pre-set the frequency response of the filter according to the scene and his own preferences, and compensate the frequency response of the filter according to the frequency response of the inverted sound wave used for noise reduction of the surrounding ambient sound received, thereby obtaining compensation. After the frequency response. As shown in formula (2):
- Hr(z) is the frequency response preset by the filter
- Hanc(z) is the frequency response of the inverted sound wave used for noise reduction of the surrounding ambient sound received
- H'r(z) For the compensated frequency response.
- the user in addition to the need to pay attention to the key sounds in the surrounding environment, the user also needs to know the direction of the sound direction, such as whether the bicycle ringtone is from the left or from the right, so that the user can make a corresponding processing strategy.
- the operation information to be executed includes a direction of prompting the surrounding ambient sound; then the processing device determines that the subsequently received ambient sound received by the left pickup microphone of the earphone and the right pickup microphone received by the earphone are received The phase difference and amplitude difference between the subsequent received ambient sounds; according to the determined phase difference and amplitude difference, the processing device determines that the left alarm tone needs to be output to the left channel of the earphone, and needs to be to the right of the earphone The channel outputs a right alarm tone; the left alarm tone and the right alarm tone are used as post-operation signals.
- the phase difference between the left alarm sound and the right alarm sound is received by the determined left ambient microphone and the subsequent received ambient sound received by the left pickup microphone
- the phase difference between ambient sounds is the same; between the left alarm tone and the right alarm tone
- the difference in amplitude is the same as the amplitude difference between the subsequently received ambient sound received by the left pickup microphone and the subsequently received ambient sound received by the right pickup microphone of the headset.
- the sound heard by the left ear will be earlier than the sound heard by the right ear, and the sound heard by the left ear will be larger than the sound heard by the right ear. That is, the intensity is greater.
- the position of the earphone of the earphone is very close to the position of the human ear.
- the ambient sound received by the left and right earplugs can be used to analyze the sound source, and then input to the left of the human ear.
- the phase difference and amplitude difference between the alarm tone and the right alarm tone are the same as the phase difference and amplitude difference between the real ambient sound and the left ear and the right ear. Therefore, the user can press the left alarm tone and the right alarm.
- the tone determines the direction of the tone.
- the prompt sounds in the embodiments of the present invention may be common warning sounds, such as some short audios that are easy to attract the attention of the user, such as beeps, drops, and the like.
- the prompt tone can also be a synthesized voice, such as a manual voice broadcast, please note that there is a car nearby.
- the prompt sound may also be a virtual background sound, such as a pre-stored horn sound, a bicycle bell sound, and the like, a virtual sound similar to that included in the ambient sound.
- the user can customize parameters such as the type and volume of the prompt tone.
- the received ambient sound is filtered to filter out some noise, which allows for more accurate analysis of ambient sounds.
- the sounds other than the horn sound in the ambient sound are filtered out, and then the horn is analyzed.
- phase difference and amplitude difference between the subsequently received ambient sound received by the left pickup microphone of the earphone and the subsequently received ambient sound received by the right pickup microphone of the earphone are calculated as a formula (3) ) shown:
- S l (i) is the subsequent received ambient sound received by the left pickup microphone of the earphone in the i-th measurement period;
- S r (i) is the i-th measurement period.
- the subsequent received ambient sound received by the right pickup microphone of the earphone; i has a value range of [1, I], where I is the total number of measurement cycles, which can be considered as setting;
- A is the amplitude difference between the subsequently received ambient sound received by the left pickup microphone of the earphone and the subsequently received ambient sound received by the right pickup microphone of the earphone;
- S r (i+u) is a signal obtained after the subsequent received ambient sound delay time u received by the right pickup microphone of the earphone in the i-th measurement period;
- u is the time difference between the subsequent received ambient sound received by the preset left pickup microphone and the subsequently received ambient sound received by the right pickup microphone; that is, for u do a scan, when u is equal to the time difference between the subsequently received ambient sound received by the left pickup microphone and the subsequently received ambient sound received by the right pickup microphone, the left pickup microphone receives
- the correlation value between the subsequent received ambient sound and the subsequent received ambient sound received by the right pickup microphone is the largest;
- the range of U is [-W, W], where W is the preset processing The longest time range that the device can handle; W can be a measurement period;
- ⁇ is the phase difference between the subsequently received ambient sound received by the left pickup microphone of the earphone and the subsequently received ambient sound received by the right pickup microphone of the earphone;
- x(i) is the alarm sound generated by the system
- x(i+ ⁇ ) is the signal obtained by the system after the alarm prompt tone x(i) delay time ⁇ ;
- x l (i) is the left alarm sound to be output to the left channel of the earphone
- x r (i) is the left alarm sound to be output to the right channel of the earphone.
- the operation information to be executed includes performing voice recognition processing on the ambient sound; performing operation according to the to-be-executed operation information and the subsequent received ambient sound, and obtaining an operation signal, which specifically includes any one of the following contents or Any combination of multiples:
- the determined operation signal when the operation information to be executed includes performing voice recognition processing on the ambient sound, the determined operation signal may be mixed with the audio signal played by the household device to obtain a composite signal, and the composite signal is synthesized. The signal is output to the earphone, so that the user can enjoy the audio signal at the same time, ensure that the audio signal is not interrupted, and simultaneously hear the recognized virtual prompt sound, the increased amplitude voice or the translated voice.
- the operation information to be executed includes performing voice recognition processing on the ambient sound
- the playback of the audio signal may be interrupted, and the determined operation signal is separately output, so that the user can clearly hear the voice.
- a recognized virtual tone, an increased amplitude voice, or a translated voice when the operation information to be executed includes performing voice recognition processing on the ambient sound.
- the virtual prompt sound corresponding to the recognized voice is determined according to the recognized voice, and specifically, the recognized voice broadcasted by the artificial voice, for example, the recognized voice is “eat?” ", the virtual prompt tone can be artificially broadcast "have you eaten?". In this way, the voice information in the ambient sound can be more clearly fed back to the user.
- the amplitude of the recognized speech is increased to obtain a speech whose amplitude is increased, and the speech whose amplitude is increased is used as an operation signal. In this way, when the noise in the ambient sound is particularly large, or when the user has hearing impairment, the sound of the other person's speech can be effectively increased, and the hearing aid effect is provided for the user.
- the recognized voice is translated into a voice corresponding to the preset language form, and the translated voice is used as an operation signal.
- the translation of the recognized language can be implemented by the translation software to provide a more diverse service for the user.
- the voice can also be recorded and saved.
- the recognized human language may be converted into text information, and the converted text information may be displayed on the user equipment; or the recognized human language may be converted into text information, and the converted text information may be determined.
- the converted text information is translated into the text information corresponding to the preset language form, and the text information corresponding to the preset language form is displayed on the user equipment.
- the user equipment may also be The way to ring or vibrate to alert the user to the recognized voice.
- the recognized human voice is displayed on the screen of the user's mobile phone, so that the user can more clearly determine the voice content in the ambient sound, and can better perform diversity for the hearing impaired person. service.
- the processing device receives the sound of the synthesized signal received by the left feedback microphone and the right feedback microphone mixed with the ambient sound heard by the human ear, and the received composite signal and the ambient sound heard by the human ear
- the mixed sound is analyzed, and the post-operation signal is adjusted according to the obtained analysis result, and the adjusted operation signal is mixed with the audio signal played by the user equipment to obtain the corrected composite signal, and the corrected composite signal is output.
- the headset receives the sound of the synthesized signal received by the left feedback microphone and the right feedback microphone mixed with the ambient sound heard by the human ear, and the received composite signal and the ambient sound heard by the human ear
- the mixed sound is analyzed, and the post-operation signal is adjusted according to the obtained analysis result, and the adjusted operation signal is mixed with the audio signal played by the user equipment to obtain the corrected composite signal, and the corrected composite signal is output.
- the headset receives the sound of the synthesized signal received by the left feedback microphone and the right feedback microphone mixed with the ambient sound heard by the human ear, and the received composite
- the processing device receives the synthesized signal received by the left feedback microphone and the right feedback microphone and the sound mixed with the ambient sound heard by the human ear, and the reverse in the composite signal.
- the phase acoustic wave cancels out the noise in the ambient sound heard by the human ear.
- the noise of the mixed signal mixed with the ambient sound heard by the human ear is already very small, and the synthesized signal is heard with the human ear.
- the ambient sound is mixed and analyzed, and the signal after the operation is adjusted according to the analysis result, for example, the phase of the inverted sound wave is adjusted, so that the reversed sound wave in the corrected composite signal cancels the ambient sound.
- the inverted sound wave in the corrected composite signal has better effect on noise reduction of the ambient sound, and thus, by inputting the positive composite signal to the earphone, the ambient sound can be heard to the human ear.
- the noise reduction effect is better, which allows the user to better enjoy the music or other audio in the audio signal, further improving the user experience.
- the time spectrum of the ambient sound within the preset duration is determined according to the surrounding ambient sound within the preset duration; the ambient sound according to the preset duration
- the spectrum is determined from the time spectrum of the preset at least one scene, wherein the time spectrum of the matching scene matches the time spectrum of the ambient sound within the preset duration; and the operation information corresponding to the matching scene is determined to be Performing operation information; performing operation according to the operation information to be executed and the surrounding ambient sound, determining the operation signal; mixing the operation signal with the audio signal played by the user equipment to obtain a composite signal, and outputting the composite signal to In the headset. It is inaccurate to analyze the scene based on what sounds are included in the ambient sound.
- the time spectrum of the surrounding ambient sounds is analyzed according to the preset duration, thereby further improving the accuracy of the recognition of the surrounding ambient sounds;
- the matching scene is determined from the preset at least one scene, the matching scene that is closest to the real scene in which the user is located can be determined, and then the operation information corresponding to the matching scene is operated. That is to say, according to the real scene in which the user is located, the user can perform more accurate operations on the ambient sound according to the scene in which the user is located, and provide the user with more accurate prompts and better service.
- FIG. 3 is a schematic structural diagram of a processing device for processing ambient sounds according to an embodiment of the present invention provided by an embodiment of the present invention.
- the embodiment of the present invention provides a processing device 300 for processing a surrounding ambient sound, and is used to perform the foregoing method for processing a surrounding ambient sound.
- the receiving unit 301 is included.
- a receiving unit configured to receive ambient sounds
- a determining unit configured to determine a time spectrum of ambient sounds within a preset duration according to the ambient sounds in the preset preset duration; and at least one preset according to a time spectrum of ambient sounds within a preset duration In the time spectrum of the scene, the matching scene is determined; the operation information corresponding to the matching scene is determined as the operation information to be executed; wherein the time spectrum of the matching scene matches the time spectrum of the ambient environment sound within the preset duration;
- a processing unit configured to perform operation according to the to-be-executed operation information and the subsequently received ambient sound, and determine the post-operation signal
- a synthesizing unit configured to mix the post-operation signal with an audio signal played by the user equipment to obtain a composite signal
- a sending unit for outputting the composite signal to the earphone.
- the processing device may be located in the headset or on the user device side.
- the determining unit is specifically configured to:
- the scenario corresponding to the largest cross-correlation value is determined as an alternative scenario; the candidate scenario is pre-configured with at least one feature spectrum; All or part of the spectrum in the time spectrum of the alternative scene;
- the candidate scene is determined to be a matching scene
- the characteristic spectrum is: all or part of the spectrum included in the time spectrum of the ambient sound within the preset duration and the time spectrum corresponding to the candidate scene.
- the to-be-executed operation information includes any one or a combination of any of the following:
- Signal enhancement processing is performed on ambient sounds, directions of ambient sounds are presented, speech recognition processing is performed on ambient sounds, and noise reduction of ambient sounds is performed.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound
- the processing unit is specifically configured to perform any of the following:
- the operation information to be executed includes performing signal enhancement processing on the surrounding ambient sound, and determining, according to the subsequently received ambient sound, a prompt tone for reminding the user to pay attention to the subsequently received ambient sound, and using the prompt sound as an operation. After the signal.
- the operation information to be executed includes performing signal enhancement processing on the surrounding ambient sound, and determining, according to the subsequently received ambient sound, a prompt tone for reminding the user to pay attention to the subsequently received ambient sound, and using the prompt sound as an operation.
- a post signal and if the power value of the ambient sound in the preset frequency band included in the subsequently received ambient sound is greater than the power threshold, the inverted sound wave is generated according to the received surrounding ambient sound, and the inverted sound wave is taken as the operation a signal, wherein the preset frequency band is a preset frequency range of at least one noise.
- the information to be executed includes signal enhancement processing on the ambient sound;
- the filter filters the surrounding ambient sounds, obtains the filtered ambient sound, and uses the filtered ambient sound as the post-operation signal.
- the operation information to be executed includes performing signal enhancement processing on the ambient sound; filtering the subsequent received ambient sound through the filter to obtain the filtered ambient sound, and using the filtered ambient sound as an operation. a post signal, and if the power value of the ambient sound in the preset frequency band included in the subsequently received ambient sound is greater than the power threshold, the inverted sound wave is generated according to the received surrounding ambient sound, and the inverted sound wave is taken as the operation a signal, wherein the preset frequency band is a preset frequency range of at least one noise.
- the information to be executed includes performing signal enhancement processing on the ambient sound; filtering the subsequently received ambient sound through the filter to obtain the filtered ambient sound, and using the filtered ambient sound as an operation. After the signal. And if the power value of the ambient sound in the preset frequency band included in the received ambient sound is greater than the power threshold, generating an inverted sound wave according to the received surrounding ambient sound, and using the inverted sound wave as the operation signal, wherein
- the preset frequency band is a preset frequency range of at least one noise.
- the method further includes: performing frequency response according to the filter preset, and used for noise reduction of the received surrounding ambient sound
- the frequency response of the inverted sound wave compensates the frequency response of the preset filter to obtain the compensated frequency response; through the filter, the compensated frequency response is used to the ambient sound in the preset frequency band in the ambient sound Filtering is performed to obtain a filtered ambient sound.
- the operation information to be executed includes a direction indicating a surrounding ambient sound
- Processing unit specifically for:
- the left alarm sound is to be output to the left channel of the earphone, and the right alarm sound is output to the right channel of the earphone; and the left alarm sound and the right alarm sound As a post-operational signal;
- phase difference between the left alarm tone and the right alarm tone is determined by the left pickup microphone
- the phase difference between the subsequently received ambient sound received by the gram and the subsequently received ambient sound received by the right pickup microphone of the headset is the same;
- the difference between the amplitude of the left alarm tone and the right alarm tone and the subsequent received ambient sound received by the left pickup microphone and the subsequent received surroundings received by the right pickup microphone of the earphone The amplitude difference between the tones is the same.
- the operation information to be executed includes performing voice recognition processing on the ambient sound
- the processing unit is specifically configured to perform any one or a combination of the following:
- the processing unit performs operations according to the to-be-executed operation information and the subsequent received ambient sounds, and after obtaining the post-operation signal, is further configured to:
- the operation information to be executed includes noise reduction processing on the surrounding environment
- Processing unit specifically for:
- an inverted sound wave is generated, and the inverted sound wave is used as an operation signal.
- processing unit is further configured to:
- the time spectrum of the ambient sound within the preset duration is determined according to the surrounding ambient sound within the preset duration; the ambient sound according to the preset duration
- the spectrum is determined from the time spectrum of the preset at least one scene, wherein the time spectrum of the matching scene matches the time spectrum of the ambient sound within the preset duration; and the operation information corresponding to the matching scene is determined to be Performing operation information; performing operation according to the operation information to be executed and the surrounding ambient sound, determining the operation signal; mixing the operation signal with the audio signal played by the user equipment to obtain a composite signal, and outputting the composite signal to In the headset.
- the time spectrum of the ambient sounds according to the preset duration is performed.
- the analysis further improves the accuracy of the recognition of the ambient sound; and according to the time spectrum of the ambient sound of the preset duration, when the matching scene is determined from the preset at least one scene, the user can be determined to be located
- the real scene is closest to the matching scene, and then operates according to the operation information corresponding to the matching scene, that is, according to the real scene in which the user is located, thereby realizing more accurate ambient sound according to the scene in which the user is located. Operation, to provide users with more accurate tips and better service purposes.
- FIG. 4 is a schematic structural diagram of another processing device for processing ambient sounds according to an embodiment of the present invention provided by an embodiment of the present invention.
- a processing device 400 for processing a surrounding ambient sound is provided in the embodiment of the present invention, and is configured to perform the foregoing method for processing ambient sounds.
- the processor 401 and the memory 402 are included.
- the processor reads the program stored in the memory and performs the following process:
- the matching scene is determined; the operation information corresponding to the matching scene is determined as the operation information to be executed; the operation information according to the to-be-executed operation and the subsequent surrounding ambient sound are operated to determine the signal after the operation; Audio signal played by the user equipment is mixed Combining, obtaining a composite signal, and outputting the synthesized signal to the earphone; wherein, the time spectrum of the matching scene matches the time spectrum of the ambient sound within the preset duration; optionally, the processor may be located in the earphone or may be located User equipment side;
- a receiver for receiving ambient sound under the control of the processor optionally, the receiver is connected to the left pickup microphone of the earphone and the right pickup microphone of the earphone, and the receiver receives the left pickup microphone of the earphone and the right of the earphone
- the ambient sound received by the pickup microphone in another embodiment, the receiver can also be connected to the microphone on the user equipment, and at this time, the receiver can receive the ambient sound received by the microphone on the user equipment;
- a transmitter for outputting a composite signal to the earphone under control of the processor specifically, the transmitter is connected to the left channel and the right channel of the earphone, and the transmitter outputs the composite signal to the left channel of the earphone and The right channel, and then the left channel is connected to the left speaker, and the right channel is connected to the right speaker.
- the composite signal output from the transmitter to the left channel of the earphone passes through the left speaker and the human ear, and the transmitter outputs the right channel to the earphone.
- the composite signal passes through the right speaker and then the human ear.
- the memory is configured to store a time spectrum of the preset at least one scene, and operation information corresponding to the matching scene, and a stored program.
- the processor is specifically configured to perform the foregoing method for processing ambient sounds.
- the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by the processor and various circuits of memory represented by the memory.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- the receiver and transmitter provide means for communicating with various other devices on the transmission medium.
- the processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
- the time spectrum of the ambient sound within the preset duration is determined according to the surrounding ambient sound within the preset duration; the ambient sound according to the preset duration a spectrum, from a preset time spectrum of at least one scene, determining a matching scene, where The time spectrum of the matching scene matches the time spectrum of the ambient sound in the preset duration; the operation information corresponding to the matching scene is determined as the operation information to be executed; and the operation information according to the operation to be executed and the surrounding ambient sound are subsequently operated. Determining the post-operation signal; mixing the post-operation signal with the audio signal played by the user equipment to obtain a composite signal, and outputting the synthesized signal to the earphone.
- the time spectrum of the ambient sounds according to the preset duration is performed.
- the analysis further improves the accuracy of the recognition of the ambient sound; and according to the time spectrum of the ambient sound of the preset duration, when the matching scene is determined from the preset at least one scene, the user can be determined to be located
- the real scene is closest to the matching scene, and then operates according to the operation information corresponding to the matching scene, that is, according to the real scene in which the user is located, thereby realizing more accurate ambient sound according to the scene in which the user is located. Operation, to provide users with more accurate tips and better service purposes.
- embodiments of the present invention can be provided as a method, or a computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- These computer program instructions can also be stored in a bootable computer or other programmable data processing device.
- a computer readable memory that operates in a particular manner, causing instructions stored in the computer readable memory to produce an article of manufacture comprising an instruction device, the instruction device being implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
一种对周围环境音的处理方法及设备,根据接收到的预设时长内的周围环境音,确定所述预设时长内的周围环境音的时频谱(201);根据所述预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,所述匹配场景的时频谱与所述预设时长内的周围环境音的时频谱匹配(202);将所述匹配场景对应的操作信息确定为所述待执行操作信息(203);根据所述待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号(204);将所述操作后信号混合至合成信号,并将所述合成信号输出至耳机中;其中,所述合成信号至少包括用户通过用户设备播放的音频信号(205)。
Description
本发明涉及信号技术领域,尤其涉及一种对周围环境音的处理方法及设备。
主动降噪(Ambient Noise Cancellation,简称ANC)技术是一种在用户听音频时能够抵消周围环境中的中低频的噪声,从而产生安静聆听体验的技术。通过抵消周围环境中的噪声,可以让用户在听得清楚的前提下,音量可以更小,从而保护听力。
生活中的中低频噪声主要来源是交通工具、风扇、马达等。因此主动降噪功能主要在交通工具(如飞机、汽车、公交、地铁、火车等)上使用,也可能用在办公室、厂房等地方。
现有技术中应用主动降噪技术生产的降噪耳机,可以有效的对周围环境音中的噪声进行抵消,从而使用户安心的听音乐。但是现有技术的降噪耳机对周围环境音中的所有声音,甚至是用于提醒用户的汽车喇叭、警报等声音均进行了抵消,如此,为用户带来了一定的危险性。
基于上述论述可见,生活中用户可能在各种场景下使用降噪耳机,而不同的场景可能有不同的需求,比如用户需要听到用于提醒用户的汽车喇叭的声音。而现有技术中的降噪耳机仅仅是一味的对所有周围声音进行降噪,并不能根据用户所处的场景提供多样性的服务。
综上,亟需一种对周围环境音的处理方法,用于基于用户所处的场景,对周围环境音进行更准确的操作,以便为用户提供更准确的提示以及更优良的服务。
发明内容
本发明实施例提供一种对周围环境音的处理方法,用于基于用户所处的场景,对周围环境音进行更准确的操作,以便为用户提供更准确的提示以及更优良的服务。
本发明实施例提供一种对周围环境音的处理方法,包括:
根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;
根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;
将匹配场景对应的操作信息确定为待执行操作信息;
根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;
将操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将合成信号输出至耳机中。
由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
可选地,根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,具体包括:
将预设时长内的周围环境音的时频谱与预设的至少一个场景中的每个场
景的时频谱进行归一化互相关,得到至少一个互相关值;
若至少一个互相关值中最大的互相关值大于互相关阈值,则将最大的互相关值对应的场景确定为备选场景;备选场景预设有至少一个特征频谱;备选场景的特征频谱为备选场景的时频谱中的全部频谱或部分频谱;
从预设时长内的周围环境音的时频谱中确定出至少一个特征频谱中的每一个特征频谱的能量;
根据预设时长内的周围环境音中的每一个特征频谱的能量,确定预设时长内的周围环境音中所有特征频谱的平均能量;
在确定平均能量大于能量阈值时,将备选场景确定为匹配场景。
具体来说,当备选场景的时频谱与处理设备接收到的周围环境音的时频谱的互相关值大于互相关阈值,且预设的该备选场景对应的N个核心频率,则该周围环境音的时频谱中一定也包括该备选场景对应的N个核心频率。进一步,由于该备选场景对应的特征频谱为该备选场景对应的N个核心频率中的部分或全部,因此周围环境音的时频谱中也一定包括该备选场景对应的特征频谱。因此,当确定出备选场景之后,可以根据预设的备选场景对应的至少一个特征频谱,从预设时长内的周围环境音的时频谱中确定出该至少一个特征频谱中的每一个特征频谱的能量。
如此,可提高对周围环境音的识别的准确性,即所确定出的匹配场景与真实的周围环境更加接近,进而根据匹配场景对应的操作信息进行操作时,才能更加的准确,为用户提供更加精确的服务。
可选地,待执行操作信息包括对周围环境音进行信号增强处理;
根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:
根据后续接收到的周围环境音,确定用于提醒用户注意后续接收到的周围环境音的提示音,并将提示音作为操作后信号;
若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成用于对后续收到的周围环境音降
噪的反相声波,并将反相声波作为操作后信号;其中,预设频带为预设的至少一个噪音的频率范围。
如此,确定出周围环境音所匹配的场景之后,从预设的用于存储提示音的数据库中确定出一个提示音,将该提示音与音频信号进行混合,并将该混合信号输入给人耳,此时人会听到该提示音,进而会提高警惕,如此,改善了用户戴上耳机之后对周围环境音中的关键声音不敏感的问题。另一方面,通过生成的反相声波,进一步对周围环境音的进行了降噪,此时,更能凸显处理设备所输出的提示音,也就是说,由于对周围环境音的进行了降噪,因此进一步使用户听到的提示音的更加清晰,进而可使用户增加警惕性,第三方面,此时用户还可听到音频信号,可见,本发明实施例中并不会为了给用户发送提示音以增加用户的警惕性,而使用户不能享受音频信号,可见,本发明实施例中给用户一个更舒适的音频环境。
可选地,待执行操作信息包括以下内容中的任一项或任多项的组合:
对周围环境音进行信号增强处理、提示周围环境音的方向、对周围环境音进行语音识别处理、对周围环境音降噪处理。
可选地,待执行操作信息包括对周围环境音进行信号增强处理;
根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:
通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号。
如此,通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,以便保留用户希望听到的部分周围环境音。之后将滤波后的信号输入至人耳中,与用户的耳朵所能听到的声音进行叠加,起到了凸出该用户希望听到的部分周围环境音的效果,即用户所听到的风声、鸟叫、虫鸣声的声音均会得到增强,如此,用户在欣赏音乐的同时,也收听到了周围环境音中的美妙声音。
可选地,根据待执行操作信息,以及后续接收到的周围环境音进行操作,
得到操作后信号之后,还包括:
若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号;其中,预设频带为预设的至少一个噪音的频率范围。
如此,一方面,将滤波后的信号输入至人耳中,与用户的耳朵所能听到的声音进行叠加,起到了凸出该用户希望听到的部分周围环境音的效果,另一方面,由于对周围环境音进行了降噪,用户能听到的周围环境音的音量更小了,此时凸显处理设备所输出的滤波后的周围环境音,也就是说,用户此时听到的滤波后的周围环境音的更加清晰了,进而改善了用户的感受,且此时用户还可听到音频信号,可见,本发明实施例中并不会为了给用户发送滤波后的周围环境音,而使用户不能享受音频信号,可见,本发明实施例中给用户一个更舒适的音频环境。
可选地,通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,还包括:
根据滤波器预设的频率响应,以及用于对后续收到的周围环境音降噪的反相声波的频率响应,对预设的滤波器的频率响应进行补偿,得到补偿后的频率响应;
通过滤波器,使用补偿后的频率响应对周围环境音中的预设频带内的环境音进行滤除,得到滤波后的周围环境音。
如此,一方面,将滤波后的信号输入至人耳中,与用户的耳朵所能听到的声音进行叠加,起到了凸出该用户希望听到的部分周围环境音的效果,,另一方面,由于对周围环境音进行了降噪,用户能听到的周围环境音的音量更小了,此时凸显处理设备所输出的滤波后的周围环境音;进一步,根据滤波器预设的频率响应,以及用于对后续收到的周围环境音降噪的反相声波的频率响应,对预设的滤波器的频率响应进行补偿,如此,可有效的减少反相声波对滤波后的周围环境音造成的影响,一方面有效的对周围环境音中的噪音
进行降噪,另一方面对周围环境音中的用户希望听到的声音进行增强。可见,本发明实施例中并不会为了给用户发送滤波后的周围环境音,而使用户不能享受音频信号,可见,本发明实施例中给用户一个更舒适的音频环境。
可选地,待执行操作信息包括提示周围环境音的方向;
根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:
确定耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差和幅度差;
根据确定出的相位差和幅度差,确定出需向耳机的左声道输出左报警提示音,和需向耳机的右声道输出右报警提示音;并将左报警提示音和右报警提示音作为操作后信号;
其中,左报警提示音和右报警提示音之间的相位差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差相同;
左报警提示音和右报警提示音之间的幅度差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的幅度差相同。
由于耳机戴在头上,因此耳机的耳塞的位置和人耳的位置非常接近,此时利用左右两个耳塞收到的周围环境音,即可分析出声音来源,进而所输入到人耳的左报警提示音和右报警提示音之间的相位差和幅度差与真实的周围环境音进入到左耳和右耳的相位差和幅度差均相同,因此,用户可根据左报警提示音和右报警提示音确定出提示音的方向,改善了用户感受。
可选地,待执行操作信息包括对周围环境音进行语音识别处理;
根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括以下内容中的任一项或任多项的组合:
对周围环境音进行语音识别,根据识别出的语音确定出识别出的语音对应的虚拟提示音,并将虚拟提示音作为操作后信号;如此,可更加清晰的向
用户反馈周围环境音中的语音信息。
对后续接收到的周围环境音进行语音识别,将识别出的语音的幅值增大,得到幅值增大的语音,并将幅值增大的语音作为操作后信号;如此,在周围环境音中的噪声特别大,或者用户有听力障碍时,可有效的增大他人说话的声音,为用户起到了助听器的效果。
对后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。可选地,可通过翻译软件实现对识别出的语言的翻译,为用户提供更多样化的服务。可选地,当识别出语音之后,还可将语音进行录音,并保存。
可选地,根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,还包括:
将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在用户设备上;或者
将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将转换后的文字信息翻译为预设的语言形式对应的文字信息,并将预设的语言形式对应的文字信息显示在用户设备上。可选地,处理设备识别出语音之后,还可通过使用户设备响铃或震动的方式,提醒用户注意所识别出的语音。
举例来说,将识别出的人类语音展示在用户的手机屏幕上,如此,可使用户更加清楚的确定周围环境音中的语音内容,也可更好的为具有听力障碍的人进行多样性的服务。
可选地,待执行操作信息包括对周围环境音降噪处理;
根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:
根据后续接收到的周围环境音,生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号。
由于根据接收到的周围环境音产生,产生了反相声波,处理设备将反相声波输出至人耳,以使该反相声波与进入人耳的周围环境音进行抵消,从而实现了降噪的效果。可选地,可通过特制的硬件通道实现反相声波的生成及传输。
可选地,根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱之前还包括:确定耳机戴在用户头上。
如此,则可在用户未戴耳机时,停止对周围环境音的处理,从而降低能耗,节省资源。
可选地,处理设备接收通过左反馈麦克和右反馈麦克接收到的合成信号与人耳听到的周围环境音进行混合的声音,并对接收到的合成信号与人耳听到的周围环境音进行混合的声音进行分析,根据得到的分析结果,调整操作后信号,并将调整后的操作信号与用户设备播放的音频信号进行混合,得到修正后的合成信号,并将修正后的合成信号输出至耳机中。
如此,通过将正后的合成信号输入至耳机,可对人耳听到的周围环境音的降噪效果更好,使用户更好的享受音频信号中的音乐或者其它音频,进一步改善了用户感受。
本发明实施例提供一种对周围环境音进行处理的处理设备,包括:
接收单元,用于接收周围环境音;
确定单元,用于根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景;将匹配场景对应的操作信息确定为待执行操作信息;其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;
处理单元,用于根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;
合成单元,用于将操作后信号与用户设备播放的音频信号进行混合,得到合成信号;
发送单元,用于将合成信号输出至耳机中。
由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
可选地,确定单元,具体用于:
将预设时长内的周围环境音的时频谱与预设的至少一个场景中的每个场景的时频谱进行归一化互相关,得到至少一个互相关值;
若至少一个互相关值中最大的互相关值大于互相关阈值,则将最大的互相关值对应的场景确定为备选场景;备选场景预设有至少一个特征频谱;备选场景的特征频谱为备选场景的时频谱中的全部频谱或部分频谱;
从预设时长内的周围环境音的时频谱中确定出至少一个特征频谱中的每一个特征频谱的能量;
根据预设时长内的周围环境音中的每一个特征频谱的能量,确定预设时长内的周围环境音中所有特征频谱的平均能量;
在确定平均能量大于能量阈值时,将备选场景确定为匹配场景。
可选地,待执行操作信息包括对周围环境音进行信号增强处理;
处理单元,具体用于:
根据后续接收到的周围环境音,确定用于提醒用户注意后续接收到的周围环境音的提示音,并将提示音作为操作后信号;
若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号;其中,预设频带为预设的至
少一个噪音的频率范围。
可选地,待执行操作信息包括对周围环境音进行信号增强处理;
处理单元,具体用于:
通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号。处理单元还用于:得到操作后信号之后,若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号;其中,预设频带为预设的至少一个噪音的频率范围。进一步地,处理单元,还用于在通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,根据滤波器预设的频率响应,以及用于对后续收到的周围环境音降噪的反相声波的频率响应,对预设的滤波器的频率响应进行补偿,得到补偿后的频率响应;通过滤波器,使用补偿后的频率响应对周围环境音中的预设频带内的环境音进行滤除,得到滤波后的周围环境音。
可选地,待执行操作信息包括提示周围环境音的方向;
处理单元,具体用于:
确定耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差和幅度差;
根据确定出的相位差和幅度差,确定出需向耳机的左声道输出左报警提示音,和需向耳机的右声道输出右报警提示音;并将左报警提示音和右报警提示音作为操作后信号;
其中,左报警提示音和右报警提示音之间的相位差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差相同;
左报警提示音和右报警提示音之间的幅度差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的幅度差相同。
可选地,待执行操作信息包括对周围环境音进行语音识别处理;
处理单元,具体用于执行以下内容中的任一项或任多项的组合:
对周围环境音进行语音识别,根据识别出的语音确定出识别出的语音对应的虚拟提示音,并将虚拟提示音作为操作后信号;
对后续接收到的周围环境音进行语音识别,将识别出的语音的幅值增大,得到幅值增大的语音,并将幅值增大的语音作为操作后信号;
对后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。
可选地,在根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,处理单元还用于:
将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在用户设备上;或者
将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将转换后的文字信息翻译为预设的语言形式对应的文字信息,并将预设的语言形式对应的文字信息显示在用户设备上。
可选地,待执行操作信息包括对周围环境音降噪处理;
处理单元,具体用于:
根据后续接收到的周围环境音,生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号。
可选地,合成单元,用于通过接收单元接收通过左反馈麦克和右反馈麦克接收到的合成信号与人耳听到的周围环境音进行混合的声音,并对接收到的合成信号与人耳听到的周围环境音进行混合的声音进行分析,根据得到的分析结果,调整操作后信号,并将调整后的操作信号与用户设备播放的音频信号进行混合,得到修正后的合成信号,并将修正后的合成信号通过发送单元输出至耳机中。
本发明实施例提供一种对周围环境音进行处理的处理设备,包括:
接收器,用于接收周围环境音;
处理器,用于根据通过接收器接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景;将匹配场景对应的操作信息确定为待执行操作信息;根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将合成信号通过发送器输出至耳机中;其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;
发送器,用于在处理器控制下,将合成信号输出至耳机中;
存储器,用于存储预设的至少一个场景的时频谱,以及匹配场景对应的操作信息。
由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
可选地,处理器,具体用于:
将预设时长内的周围环境音的时频谱与预设的至少一个场景中的每个场景的时频谱进行归一化互相关,得到至少一个互相关值;
若至少一个互相关值中最大的互相关值大于互相关阈值,则将最大的互相关值对应的场景确定为备选场景;备选场景预设有至少一个特征频谱;备选场景的特征频谱为备选场景的时频谱中的全部频谱或部分频谱;
从预设时长内的周围环境音的时频谱中确定出至少一个特征频谱中的每一个特征频谱的能量;
根据预设时长内的周围环境音中的每一个特征频谱的能量,确定预设时长内的周围环境音中所有特征频谱的平均能量;
在确定平均能量大于能量阈值时,将备选场景确定为匹配场景;
其中,特征频谱为:预设时长内的周围环境音的时频谱和备选场景对应的时频谱中均包含的频谱中的全部或部分。
可选地,待执行操作信息包括对周围环境音进行信号增强处理;
处理器,具体用于:
根据后续接收到的周围环境音,确定用于提醒用户注意后续接收到的周围环境音的提示音,并将提示音作为操作后信号;
若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号;其中,预设频带为预设的至少一个噪音的频率范围。
可选地,待执行操作信息包括对周围环境音进行信号增强处理;
处理器,具体用于:
通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号。
可选地,处理器,具体用于:
在根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号;其中,预设频带为预设的至少一个噪音的频率范围。
可选地,处理器,具体用于:
在通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,根据滤波器预设的频率响应,以及用于对后续收到的周围环境音降噪的反相声波的频率响应,对预设的滤波器的频率响应进行补偿,得到
补偿后的频率响应;
通过滤波器,使用补偿后的频率响应对周围环境音中的预设频带内的环境音进行滤除,得到滤波后的周围环境音。
可选地,待执行操作信息包括提示周围环境音的方向;
处理器,具体用于:
确定耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差和幅度差;
根据确定出的相位差和幅度差,确定出需向耳机的左声道输出左报警提示音,和需向耳机的右声道输出右报警提示音;并将左报警提示音和右报警提示音作为操作后信号;
其中,左报警提示音和右报警提示音之间的相位差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差相同;
左报警提示音和右报警提示音之间的幅度差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的幅度差相同。
可选地,待执行操作信息包括对周围环境音进行语音识别处理;
处理器,具体用于执行以下内容中的任一项或任多项的组合:
对周围环境音进行语音识别,根据识别出的语音确定出识别出的语音对应的虚拟提示音,并将虚拟提示音作为操作后信号;
对后续接收到的周围环境音进行语音识别,将识别出的语音的幅值增大,得到幅值增大的语音,并将幅值增大的语音作为操作后信号;
对后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。
可选地,处理器,在根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,还用于:
将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在用户设备上;或者
将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将转换后的文字信息翻译为预设的语言形式对应的文字信息,并将预设的语言形式对应的文字信息显示在用户设备上。
可选地,待执行操作信息包括对周围环境音降噪处理;
处理器,具体用于:
根据后续接收到的周围环境音,生成用于对后续收到的周围环境音降噪的反相声波,并将反相声波作为操作后信号。
可选地,处理器,用于通过接收器接收通过左反馈麦克和右反馈麦克接收到的合成信号与人耳听到的周围环境音进行混合的声音,并对接收到的合成信号与人耳听到的周围环境音进行混合的声音进行分析,根据得到的分析结果,调整操作后信号,并将调整后的操作信号与用户设备播放的音频信号进行混合,得到修正后的合成信号,并将修正后的合成信号通过发送器输出至耳机中。
本发明实施例中,根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;将匹配场景对应的操作信息确定为待执行操作信息;根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将合成信号输出至耳机中。由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对
应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简要介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1a为本发明实施例适用的系统架构示意图;
图1b为图1a所示的系统架构的等效电路图的示意图;
图2为本发明实施例提供的一种周围环境音的处理方法的流程示意图;
图2a为本发明实施例提供的一种时频谱的示意图;
图3为本发明实施例提供的一种对周围环境音进行处理的处理设备的结构示意图;
图4为本发明实施例提供的另一种对周围环境音进行处理的处理设备的结构示意图。
为了使本发明的目的、技术方案及有益效果更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
图1a示例性示出了本发明实施例适用的系统架构示意图。如图1a所示,该系统架构中包括用户设备103,耳机102,以及处理设备104。处理设备104可以集成在耳机102中,处理设备104也可为集成在用户设备103中,或者处理设备104为独立于耳机102和用户设备103而存在的设备。耳机102分为左侧和右侧,耳机的左侧包括左喇叭108和左拾音麦克109,耳机的右侧包
括右喇叭105和右拾音麦克106。可选地,耳机左侧还包括左反馈麦克110,耳机右侧还包括右反馈麦克107。
本发明实施例中用户设备103向处理设备104输入用户设备103播放的音频信号。处理设备104还通过左拾音麦克109和右拾音麦克106接收周围环境音101,并根据接收到的周围环境音确定待执行操作信息,并根据待执行操作信息以及接收到的周围环境音进行操作,确定操作后信号。待执行操作信息包括对周围环境音进行信号增强处理、提示周围环境音的方向、对周围环境音进行语音识别处理和对周围环境音降噪处理中的任一项或任多项的组合。处理设备将操作后信号与用户设备103音频信号进行混合,得到合成信号,并将合成信号分别输入至左喇叭108和右喇叭105中,以使用户听到合成信号。可选地,处理设备104可通过左反馈麦克110接收从左喇叭108中输出的声音,通过右反馈麦克107接收从右喇叭105中输出的声音,由于左反馈麦克110位于耳朵和左喇叭108之间,因此,左反馈麦克110接收到的声音即为人的左耳听到的声音;由于右反馈麦克107位于耳朵和右喇叭105之间,因此,右反馈麦克107接收到的声音即为人的右耳听到的声音;从而处理设备可根据左反馈麦克110和右反馈麦克107接收到的声音对合成信号进行调节,以提高用户听到的合成信号的质量,进一步提高用户的感受。
本发明实施例中,周围环境音先通过右拾音麦克106,之后再经过右喇叭105,最后经过右反馈麦克107。由于周围环境音101通过耳机进入人的耳朵中时,音量会被削弱,因此右拾音麦克106位于喇叭的外侧,可用于接收还未进入耳机的更清楚的周围环境音。且由于右拾音麦克106外部几乎没有任何遮挡物,因此可对周围环境音有较好的采集效果。类似地,周围环境音先通过左拾音麦克109,之后再经过左喇叭108,最后经过左反馈麦克110。由于周围环境音101通过耳机进入人的耳朵中时,音量会被削弱,因此左拾音麦克109位于喇叭的外侧,可用于接收还未进入耳机的更清楚的周围环境音。且由于左拾音麦克109外部几乎没有任何遮挡物,因此可对周围环境音有较好的采集效果。
图1b示例性示出了图1所示的系统架构的等效电路图。如图1b所示,系统可以分为两个部分,声学部分111,电学部分112。周围环境音101通过空间传播传递到左耳中,该模型等效为周围环境音101经过一个和耳机头结构相关的滤波器,周围环境音101穿过耳机进入左耳中的声音会被削弱。同时,周围环境音101被左拾音麦克109接收,并输入到处理设备104中进行一些列的操作,处理设备接收左拾音麦克109以及右拾音麦克106所输入的周围环境音,进行一系列的操作之后,得到操作后信号,并将操作后信号与音频信号进行混合,得到合成信号,并将合成信号分别输入至左喇叭108和右喇叭105中。处理设备104输出电信号,通过左喇叭108将接收到的电信号转换为声音信号,并且通过空间传播将该转换后的声音信号与外界的透过耳机的周围环境音进行叠加,成为用户最终听到的声音。可选地,在耳机头朝耳一侧配置有左反馈麦克110,采集用户最终听到的声音信号,并将该采集到的用户最终听到的声音信号反馈给处理设备,以使处理设备进行调整,以使用户最终听到的声音信号达到更优的效果。
本发明实施例所涉及到的用户设备为能够播放音频的设备,比如能够播放音频的的手持设备、车载设备、可穿戴设备、计算设备,以及各种形式的用户设备(User Equipment,简称UE),移动台(Mobile station,简称MS),终端(terminal),终端设备(Terminal Equipment)等等。具体来说,比如手机、平板电脑、移动图像专家组音频层3(Moving Picture Experts Group Audio Layer 3,简称MP3)、移动图像专家组音频层4(Moving Picture Experts Group Audio Layer 4,简称MP4)、收音机、录音机等等。为方便描述,本申请中,简称为用户设备。
本发明实施例中用户设备播放的音频为用户希望听到的音乐、有声小说、娱乐节目的音频等等。该音频经过处理设备104的处理,分别经左喇叭108进入人的左耳,经过右喇叭105进入人的右耳。本发明实施例中的处理设备104可为可为图4中的处理设备400。处理设备104用于结合算法,对根据预设时长的周围环境音的时频谱进行分析,以及进行一些操作,并输入合成信
号。
图4中的处理设备400包括的处理器401,可为中央处理器(Central Processing Unit,简称CPU)、数字信号处理器(Digital Signal Process,简称DSP)。具体实施中,图4中的处理设备400包括处理器401可为嵌入头盔式耳机内部的处理器;或者为连接于耳机的一个外部处理器;或者为用于播放音频信号的用户设备内部的处理器,此时,可通过定制的耳机插头,或者接口协议芯片来实现用于播放音频信号的用户设备上的处理器对周围环境音的分析和操作。
基于图1a和图1b所示的系统架构,图2示出了本发明实施例提供的处理设备可执行的一种对周围环境音的处理方法,该方法的执行主体处理设备可为图4中的处理设备400,具体来说,处理设备400中的处理器401读取存储器402中所存储的程序,并在接收器403、发送器404的配合下,用于执行下述方法流程,该方法包括:
步骤201,处理设备根据处理设备接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;
步骤202,处理设备根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;
步骤203,处理设备将匹配场景对应的操作信息确定为待执行操作信息;
步骤204,处理设备根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;
步骤205,处理设备将操作后信号混合至合成信号,并将合成信号输出至耳机中;其中,合成信号至少包括用户通过用户设备播放的音频信号。
具体来说,上述步骤201中,处理设备周期性对接收到的周围环境音执行上述步骤201至上述步骤203,在每个周期内,处理设备根据接收到的预设时长内的周围环境音确定了待执行操作信息之后,在当前周期内可根据确定
出的待执行操作信息对当前周期内后续接收到的周围环境音进行操作,直至下一个周期。举个例子,在第一个周期内的第一时刻,处理设备对在第一个周期内的第一时刻起接收到的预设时长内的周围环境音执行上述步骤201至上述步骤203,确定出第一待执行操作信息,比如,待执行操作信息为对周围环境音进行语音识别处理,此时,在该第一个周期内的其余时间里,均对后续接收到的周围环境音进行语音识别处理,并将识别出的语音确定为操作后信号。再比如,待执行操作信息为对周围环境音降噪处理,则在该第一个周期内的其余时间里,均需生成一个用于抵消后续接收到的周围环境音的反相声波,并将该生成的反相声波确定为操作后信号。到第二个周期内的第一时刻,处理设备对第二个周期内的自第一时刻起接收到的周围环境音执行上述步骤201至上述步骤203,确定出第二待执行操作信息,此时,在第二周期内的其余时间里,均根据第二待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号。
由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
本发明实施例中,处理设备通过上述步骤201至步骤203确定出待执行操作信息,具体包括,本发明实施例的处理设备根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配,此时将匹配场景对应的操作信息确定为待执行操作信息。
本发明实施例中还提供另一种实现方式,可通过预设的方式预先设置一
个或多个工作模式,将每个工作模式对应的操作信息确定为待执行的操作信息。具体实施中,可设置一些开关,用于使用户通过这些开关灵活的开启或关闭一个或多个工作模式。处理设备启动之后,先从存储器中获取控制信息,比如用户预先开启了哪些工作模式。可进行开启和关闭的工作模式包括:场景识别工作模式、对周围环境音进行信号增强处理工作模式、提示周围环境音的方向工作模式、对周围环境音进行语音识别处理工作模式、对周围环境音降噪处理工作模式等等。用户可开始上述工作模式中的任一个或任多个。
处理设备启动之后进入所开启的预设的工作模式,并在每个工作模式下确定出对应的操作信息,并将其作为待执行的操作信息。具体来说,用户预先开启了场景识别模式若开启,则处理设备执行上述步骤201至步骤203,并将匹配场景对应的操作信息确定为待执行操作信息。若用户预先开启了对周围环境音进行信号增强处理工作模式,则待执行操作信息为对周围环境音进行信号增强处理。若用户预先开启了提示周围环境音的方向工作模式,则待执行操作信息为提示周围环境音的方向。若用户预先开启了对周围环境音进行语音识别处理工作模式,则待执行操作信息为对周围环境音进行语音识别处理。若用户预先开启了对周围环境音降噪处理工作模式,则待执行操作信息为对周围环境音降噪处理。
可选地,本发明实施例中,当关闭场景识别工作模式时,处理设备对接收到的周围环境音不再执行上述步骤201至步骤203,仅仅根据用户预设的其它工作模式进行工作,或者在用户的设置下,对周围环境音不做处理,仅仅输出音频信号。本发明实施例中以用户预先开启了场景识别工作模式为例进行介绍。
可选地,存储器中还存储有对周围环境音进行处理的过程中所使用到的各个参数,比如滤波器的参数等等。这些参数用户均可自行修改,也可使用默认值。
可选地,在上述步骤201之前,处理设备启动之后确定耳机是否戴在用户头上,若耳机未戴在头上,则可能用户将耳机摘下了,此时不对周围环境
音进行处理。在确定耳机戴在用户头上时,则执行步骤201。如此,则可在用户未戴耳机时,停止对周围环境音的处理,从而降低能耗,节省资源。
可选地,可通过在耳机的耳塞头上设置传感器来判断耳机是否戴在用户头上,耳机的耳塞头为耳机于用户耳朵接触的部位。或者,可结合算法对双耳听到的周围环境音进行分析,比如一种基于头相关变换函数(Head Related Transfer Function,简称HRTF)的算法。
具体实施中,处理设备对接收到的预设时长内的周围环境音进行分帧处理,将周围环境音分为音频帧。音频帧是进行处理的基本单元,通常取10毫秒(millisecond,简称ms)或者20ms的数据。每个音频帧通过一些运算,比如快速傅氏变换(Fast Fourier Transformation,简称FFT)运算,获得该音频帧的频谱。频谱频域的颗粒度可以根据系统复杂度和需要的精度选取,例如256点。该音频帧的频谱和之前存储的多个音频帧的频谱在一起构成了该接收到的预设时长内的周围环境音的时频谱。
本发明实施例中在本地或者在云端预先存储或预设有至少一个场景,每个场景包括一个时频谱,且每个场景对应的时频谱不同,每个场景包括的时频谱中包括N个核心频率,即该场景中存在该N个核心频率的概率比较大。可选地,且每个场景还对应至少一个特征频谱,特征频谱为N个核心频率中的部分或全部,其中,N为正整数。举个例子,场景一为马路,场景一包括的时频谱中的核心频率包括马达声、人声、喇叭声的频率,此时,特征频谱可为该场景中占比重最大的声音,马路上的马达声一定占比重较大,此时,特征频谱为核心频谱中的马达声,或者,特征频谱为马达声和喇叭声,或者,特征频谱为核心频率中的所有频谱,即特征频谱为马达声、人声和喇叭声的频率。还为每个场景预设有对应的操作信息,比如,场景一为马路,因为马路上有喇叭声,需要人注意,因此预设的场景一对应的操作信息可为对周围环境音进行信号增强处理。本发明实施例中的时频谱为一段时间内用户接收到的周围环境音中各个声音的频率,图2a示例性示出了一种时频谱的示意图,如图2a所示,时频谱中横轴为时间轴,纵轴为频率轴,深浅不同的颜色代表
各个不同的声音,从时频谱中可看出一段时间内,占比重较大的一个或几个声音。
可选地,上述步骤202中,具体通过以下步骤确定匹配场景:
将处理设备接收到的预设时长内的周围环境音的时频谱与预设的至少一个场景中的每个场景的时频谱进行归一化互相关,得到至少一个互相关值。本发明实施例中归一化互相关(Normalized Correlation,简称NC),也可称为归一化互相关匹配算法,归一化互相关匹配算法是一种经典的统计算法,这种算法通过计算两幅图像的互相关值来确定两幅图像的匹配的程度。可选地,本发明实施例中也可采用机器学习算法、或者更复杂的人工神经网络等算法为周围环境音匹配出匹配场景。
若至少一个互相关值中最大的互相关值大于互相关阈值,则将最大的互相关值对应的场景确定为备选场景;备选场景预设有至少一个特征频谱;备选场景的特征频谱为备选场景的时频谱中的全部频谱或部分频谱;从预设时长内的周围环境音的时频谱中确定出至少一个特征频谱中的每一个特征频谱的能量;根据预设时长内的周围环境音中的每一个特征频谱的能量,确定预设时长内的周围环境音中所有特征频谱的平均能量;在确定平均能量大于能量阈值时,将备选场景确定为匹配场景。
具体来说,当备选场景的时频谱与处理设备接收到的周围环境音的时频谱的互相关值大于互相关阈值,且预设的该备选场景对应的N个核心频率,则该周围环境音的时频谱中一定也包括该备选场景对应的N个核心频率。举个例子用以说明,备选场景对应的核心频率为马达声、喇叭声和人声的频率,此时,只有周围环境音的时频谱中也包括马达声、喇叭声和人声的频率,周围环境音的时频谱与备选场景的时频谱的互相关值才能大于互相关阈值,也就是说,此时,周围环境音的时频谱与备选场景的时频谱才能匹配。进一步,由于该备选场景对应的特征频谱为该备选场景对应的N个核心频率中的部分或全部,因此周围环境音的时频谱中也一定包括该备选场景对应的特征频谱。因此,当确定出备选场景之后,可以根据预设的备选场景对应的至少一个特
征频谱,从预设时长内的周围环境音的时频谱中确定出该至少一个特征频谱中的每一个特征频谱的能量。
若至少一个互相关值中最大的互相关值不大于互相关阈值,则说明没有为用户当前所处的真实场景确定出一个相匹配的匹配场景。或者,若至少一个互相关值中最大的互相关值大于互相关阈值,但是周围环境音中所有特征频谱的平均能量不大于能量阈值时,则说明没有为用户当前所处的真实场景确定出一个相匹配的匹配场景。
本发明实施例中的互相关阈值和能量阈值均为常规经验值。互相关值越大则表面两个时频谱越匹配,比如互相关阈值可为1。一个频谱的能量越大,说明该频谱对应的声音越大,用户与该声音源越接近。
本发明实施例中运用时频谱进行归一化互相关,即时从时间维度,以及周围环境音中所包括的声音种类两个方面类确定备选场景,进而再根据周围环境音中包括的特征频谱的能量是否大于能量阈值,即该周围环境音中的特征频谱对应的声音的强度是否足够大,如此,可进一步提高匹配场景与用户所处的真实场景的匹配度,即进一步提高了匹配场景与用户所处的真实场景的接近程度。
可选地,本发明实施例中将匹配场景对应的操作信息确定为待执行操作信息,待执行操作信息包括以下内容中的任一项或任多项的组合:对周围环境音进行信号增强处理、提示周围环境音的方向、对周围环境音进行语音识别处理、对周围环境音降噪处理。下面详细介绍当待执行操作信息为上述内容时,处理设备相应的处理方法。
可选地,待执行操作信息包括对周围环境音降噪处理;则处理设备根据处理设备后续接收到的周围环境音,生成反相声波,并将反相声波作为操作后信号,该反相声波与音频信号进行混合,得到合成信号,将合成信号输出至人耳,合成信号中包括的反相声波用于抵消人耳接收到的周围环境音,进而达到降噪效果。
举个例子,比如,用户在马路边的休闲区中安静的听音乐,此时可能会
受到马路边的汽车的马达声、喇叭声和人声的影响,预设的该场景下对应的操作信息可以为对周围环境音降噪处理。
由于根据接收到的周围环境音产生,产生了反相声波,处理设备将反相声波输出至人耳,以使该反相声波与进入人耳的周围环境音进行抵消,从而实现了降噪的效果。可选地,可通过特制的硬件通道实现反相声波的生成及传输。
具体来说,用户戴上耳机之后,耳机堵住了用户的耳朵,此时用户对周围环境音中的关键声音不敏感,从而带来了安全隐患。此类关键声音包括不限于汽车喇叭声、提示声、旁人喊叫声等。本发明实施例中对存在此类关键声音的场景可以实现对周围环境音进行信号增强处理,以便使用户在欣赏音频信号的同时,也能够注意到周围环境音中的关键声音。
待执行操作信息包括对周围环境音进行信号增强处理;则包括多种实现方式,本发明实施例中提供以下几种可选的实施方式。
方式一,待执行操作信息包括对周围环境音进行信号增强处理,则根据后续接收到的周围环境音,确定用于提醒用户注意后续接收到的周围环境音的提示音,并将提示音作为操作后信号。
方式二,待执行操作信息包括对周围环境音进行信号增强处理,则根据后续接收到的周围环境音,确定用于提醒用户注意后续接收到的周围环境音的提示音,并将提示音作为操作后信号,且若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成反相声波,并将反相声波作为操作后信号,其中,预设频带为预设的至少一个噪音的频率范围。
具体来说,上述方式一和方式二中,即确定出周围环境音所匹配的场景之后,从预设的用于存储提示音的数据库中确定出一个提示音,将该提示音与音频信号进行混合,并将该混合信号输入给人耳,此时人会听到该提示音,进而会提高警惕,如此,改善了用户戴上耳机之后对周围环境音中的关键声音不敏感的问题。
进一步,上述方式二中,预设频带为预设的至少一个噪音的频率范围,比如预设频带包括汽车的马达声的频率范围、地铁的轨道运行声的频率范围等等。当后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,则说明用户所处的场景内噪音过大,因此,根据后续收到的周围环境音生成反相声波,并将反相声波作为操作后信号。此时,处理设备将音频信号、提示音,以及反相声波均进行混合,生成合成信号,并输入至人耳。可见,方式二中对周围环境音进行信号增强处理包括两方面,一方面输出提示音,用于增强周围环境音,另一方面,启用处理设备中的降噪设备,生成反相声波,以便对耳朵接收到的周围环境音进行降噪处理。也就是说,此种方式下,一方面,输出了提示音,用于使人会听到该提示音,进而会提高警惕,另一方面,通过生成的反相声波,进一步对周围环境音的进行了降噪,此时,更能凸显处理设备所输出的提示音,也就是说,由于对周围环境音的进行了降噪,因此进一步使用户听到的提示音的更加清晰,进而可使用户增加警惕性,第三方面,此时用户还可听到音频信号,可见,本发明实施例中并不会为了给用户发送提示音以增加用户的警惕性,而使用户不能享受音频信号,可见,本发明实施例中给用户一个更舒适的音频环境。
本发明实施例中的提示音可为常见的警示音,比如一些短短的易于引起用户注意的音频,类似嘟嘟嘟、滴滴滴等。提示音还可为合成语音,比如人工语音播报的请注意附近有车。提示音还可为虚拟背景音,比如预先存储的喇叭声、自行车铃铛声等等虚拟的与周围环境音中包括的声音类似的声音。可选地,用户可以自定义提示音的类型与音量等参数。
上述方式一和方式二中,待执行操作信息包括对周围环境音进行信号增强处理时,向人耳中至少输入提示音。但有些场景下,用户更希望听到周围场景音中的部分声音,基于此,本发明实施例中提供下述几种可选地实施方式。
方式三,待执行操作信息包括对周围环境音进行信号增强处理;则通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并
将滤波后的周围环境音作为操作后信号。
方式四,待执行操作信息包括对周围环境音进行信号增强处理;则通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号,且若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成反相声波,并将反相声波作为操作后信号,其中,预设频带为预设的至少一个噪音的频率范围。
方式五,待执行操作信息包括对周围环境音进行信号增强处理;则通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号。且若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成反相声波,并将反相声波作为操作后信号,其中,预设频带为预设的至少一个噪音的频率范围。进一步,通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,还包括:根据滤波器预设的频率响应,以及用于对后续收到的周围环境音降噪的反相声波的频率响应,对预设的滤波器的频率响应进行补偿,得到补偿后的频率响应;通过滤波器,使用补偿后的频率响应对周围环境音中的预设频带内的环境音进行滤除,得到滤波后的周围环境音。
举个例子,用户希望听到风声、鸟叫、虫鸣声,但是不希望听到公园旁边马路上汽车的马达声。而且,此时周围场景音通过耳机进入到人耳中时,音量已经被消弱了,因此此时一方面用户所听到的风声、鸟叫、虫鸣声的音量都被消弱了,另一方面也还是能听到汽车马达声。基于此种场景,本发明实施例中通过上述方式三、上述方式四和上述方式五,通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,以便保留用户希望听到的部分周围环境音。比如,设置滤波器的参数,使风声、鸟叫、虫鸣声和汽车马达声一起经过滤波器之后,滤波后的周围环境音中仅包括风声、鸟叫、虫鸣声,而汽车马达声被滤除了。之后将滤波后的信号输入至人耳中,
与用户的耳朵所能听到的声音进行叠加,起到了凸出该用户希望听到的部分周围环境音的效果,即用户所听到的风声、鸟叫、虫鸣声的声音均会得到增强,如此,用户在欣赏音乐的同时,也收听到了周围环境音中的美妙声音。
进一步,用户在公园中戴着耳机听音乐,用户实际听到的是周围环境音透过耳机传到耳朵中的声音和耳机中播放的声音的叠加结果。由于耳机喇叭能力有限,而且音量太大会损伤用户听力,因此,如果此时周围环境音中存在的噪声较大,此时,向用户播放提示音或滤波后的周围环境音会受到外界的周围环境音的干扰。基于该问题,上述方式四中,较佳地,在预设频带内的环境音的功率值大于功率门限,则输入用于降噪的反相声波,如此,则同时实现了对周围环境音中属于噪音的部分的抵消,比如汽车的马达声属于预设频带内的环境音,此时输出的反相声波可以将用户听到的汽车马达声进行抵消,达到了降噪的目的。如此,由于对周围环境音进行了降噪,用户能听到的周围环境音的音量更小了,此时凸显处理设备所输出的滤波后的周围环境音,也就是说,用户此时听到的滤波后的周围环境音的更加清晰了,进而改善了用户的感受,且此时用户还可听到音频信号,可见,本发明实施例中并不会为了给用户发送滤波后的周围环境音,而使用户不能享受音频信号,可见,本发明实施例中给用户一个更舒适的音频环境。
进一步,较佳地,上述方式五中,操作后信号同时包括滤波后的周围环境音,以及反相声波时,根据滤波器预设的频率响应,以及用于对后续收到的周围环境音降噪的反相声波的频率响应,对预设的滤波器的频率响应进行补偿,如此,可有效的减少反相声波对滤波后的周围环境音造成的影响,一方面有效的对周围环境音中的噪音进行降噪,另一方面对周围环境音中的用户希望听到的声音进行增强。
上述方式五中,通过公式(1)判定后续接收到的周围环境音中包括的预设频带内的环境音的功率值是否大于功率门限:
公式(1)中,He(z)为后续接收到的周围环境音中预设频带内的第z个环境音的频谱;z的取值范围为[1,n];n为周围环境音中包括的预设频带内的环境音的总个数;
w(z)为后续接收到的周围环境音中预设频带内的第z个环境音的加权函数;w(z)可根据具体情况进行取值,比如周围环境音中预设频带内的第z个环境音的频谱为50赫兹(Hz)至2千赫兹(KHz),此时,w(z)=1;其他频谱的环境音对应的加权函数取值0。
S为后续接收到的周围环境音中包括的预设频带内的环境音的功率值;Sth为功率门限;若S>Sth,则根据后续收到的周围环境音生成反相声波。且进一步获取获取滤波器预设的频率响应Hr(z)。用户可根据场景以及自己的喜好预先设置该滤波器的频率响应,并根据用于对后续收到的周围环境音降噪的反相声波的频率响应,对滤波器的频率响应进行补偿,得到补偿后的频率响应。如公式(2)所示:
H’r(z)=Hr(z)-Hanc(z)……公式(2)
公式(2)中:Hr(z)为滤波器预设的频率响应;Hanc(z)为用于对后续收到的周围环境音降噪的反相声波的频率响应;H’r(z)为补偿后的频率响应。
具体实施中,用户除了需要关注周围环境中的关键声音,还需要知道声音的方向来源,比如自行车铃声是来自左边还是来自右边,以便用户能够做出相应的处理策略。基于此,可选地,待执行操作信息包括提示周围环境音的方向;则处理设备确定耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差和幅度差;根据确定出的相位差和幅度差,处理设备确定出需向耳机的左声道输出左报警提示音,和需向耳机的右声道输出右报警提示音;并将左报警提示音和右报警提示音作为操作后信号。
其中,左报警提示音和右报警提示音之间的相位差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差相同;左报警提示音和右报警提示音之间
的幅度差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的幅度差相同。
具体实施中,某个声音源在左边时,则左耳听到的声音会比右耳听到的声音会早一些,且左耳听到的声音会比右耳听到的声音的幅度大一些,即强度大一些。由于耳机戴在头上,因此耳机的耳塞的位置和人耳的位置非常接近,此时利用左右两个耳塞收到的周围环境音,即可分析出声音来源,进而所输入到人耳的左报警提示音和右报警提示音之间的相位差和幅度差与真实的周围环境音进入到左耳和右耳的相位差和幅度差均相同,因此,用户可根据左报警提示音和右报警提示音确定出提示音的方向。
本发明实施例中的提示音可为常见的警示音,比如一些短短的易于引起用户注意的音频,类似嘟嘟嘟、滴滴滴等。提示音还可为合成语音,比如人工语音播报的请注意附近有车。提示音还可为虚拟背景音,比如预先存储的喇叭声、自行车铃铛声等等虚拟的与周围环境音中包括的声音类似的声音。可选地,用户可以自定义提示音的类型与音量等参数。
可选地,对接收到的周围环境音进行滤波,以便滤除一些杂音,进而可对周围环境音进行更准确的分析。比如,将周围环境音中的除喇叭声之外的声音都滤除,之后对喇叭进行分析。
耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差和幅度差的计算方式如公式(3)所示:
xl(i)=x(i)
xr(i)=Ax(i+τ)
公式(3)中,Sl(i)为第i个测量周期内的耳机的左拾音麦克所接收到的
后续接收到的周围环境音;Sr(i)为第i个测量周期内的耳机的右拾音麦克所接收到的后续接收到的周围环境音;i的取值范围为[1,I],其中,I为测量周期的总数量,可认为设定;
A为耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的幅度差;
Sr(i+u)为第i个测量周期内的耳机的右拾音麦克所接收到的后续接收到的周围环境音延迟时长u之后所得到的信号;
u为预设的左拾音麦克所接收到的后续接收到的周围环境音与右拾音麦克所接收到的后续接收到的周围环境音之间的时间上的差值;也就是说,针对u做扫描,当u等于左拾音麦克所接收到的后续接收到的周围环境音与右拾音麦克所接收到的后续接收到的周围环境音之间的时间差时,左拾音麦克所接收到的后续接收到的周围环境音与右拾音麦克所接收到的后续接收到的周围环境音之间的相关值最大;U的范围是[-W,W],其中W为预设的处理设备能够处理的最长的时间范围;W可为一个测量周期;
τ为耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差;
x(i)为系统产生的报警提示音;
x(i+τ)为系统产生的报警提示音x(i)延迟时长τ之后所得的信号;
xl(i)为需向耳机的左声道输出左报警提示音;xr(i)为需向耳机的右声道输出左报警提示音。
可选地,待执行操作信息包括对周围环境音进行语音识别处理;根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括以下内容中的任一项或任多项的组合:
对周围环境音进行语音识别,根据识别出的语音确定出识别出的语音对应的虚拟提示音,并将虚拟提示音作为操作后信号;
对后续接收到的周围环境音进行语音识别,将识别出的语音的幅值增大,得到幅值增大的语音,并将幅值增大的语音作为操作后信号;
对后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。
可选地,本发明实施例中,待执行操作信息包括对周围环境音进行语音识别处理时,可将确定出的操作后信号与户设备播放的音频信号进行混合,得到合成信号,并将合成信号输出至耳机中,如此,用户既能同时享受音频信号,保证音频信号不中断,也可同时听到所识别出的虚拟提示音、幅值增大的语音或翻译后的语音。另一种实施方式为,待执行操作信息包括对周围环境音进行语音识别处理时,可中断音频信号的播放,将确定出的操作后信号单独输出,如此,可使用户更加清楚的听到所识别出的虚拟提示音、幅值增大的语音或翻译后的语音。
具体来说,根据识别出的语音确定出识别出的语音对应的虚拟提示音,具体来说可为人工语音播报的所识别出的语音,举例来说,识别出的语音为“吃饭了吗?”,虚拟提示音可为人工播报的“吃饭了吗?”。如此,可更加清晰的向用户反馈周围环境音中的语音信息。
将识别出的语音的幅值增大,得到幅值增大的语音,并将幅值增大的语音作为操作后信号。如此,在周围环境音中的噪声特别大,或者用户有听力障碍时,可有效的增大他人说话的声音,为用户起到了助听器的效果。
在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。可选地,可通过翻译软件实现对识别出的语言的翻译,为用户提供更多样化的服务。可选地,当识别出语音之后,还可将语音进行录音,并保存。
可选地,可将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在用户设备上;或者将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将转换后的文字信息翻译为预设的语言形式对应的文字信息,并将预设的语言形式对应的文字信息显示在用户设备上。可选地,处理设备识别出语音之后,还可通过使用户设备
响铃或震动的方式,提醒用户注意所识别出的语音。
举例来说,将识别出的人类语音展示在用户的手机屏幕上,如此,可使用户更加清楚的确定周围环境音中的语音内容,也可更好的为具有听力障碍的人进行多样性的服务。
可选地,处理设备接收通过左反馈麦克和右反馈麦克接收到的合成信号与人耳听到的周围环境音进行混合的声音,并对接收到的合成信号与人耳听到的周围环境音进行混合的声音进行分析,根据得到的分析结果,调整操作后信号,并将调整后的操作信号与用户设备播放的音频信号进行混合,得到修正后的合成信号,并将修正后的合成信号输出至耳机中。
举个例子,比如,操作后信号为反相声波,处理设备接收通过左反馈麦克和右反馈麦克接收到的合成信号与人耳听到的周围环境音进行混合的声音中,合成信号中的反相声波与人耳听到的周围环境音中的噪音进行了抵消,此时合成信号与人耳听到的周围环境音进行混合的声音中噪音已经很小了,对合成信号与人耳听到的周围环境音进行混合的声音进行分析,根据分析结果对操作后信号进行调整,比如,调整反相声波的相位,以便使修正后的合成信号中的反相声波对周围环境音进行抵消的效果更好,即修正后的合成信号中的反相声波对周围环境音进行降噪的效果更好,如此,通过将正后的合成信号输入至耳机,可对人耳听到的周围环境音的降噪效果更好,使用户更好的享受音频信号中的音乐或者其它音频,进一步改善了用户感受。
从上述内容可看出,本发明实施例中,根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;将匹配场景对应的操作信息确定为待执行操作信息;根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将合成信号输出至耳机中。由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,
因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
图3示例性示出了本发明实施例提供的本发明实施例提供的一种对周围环境音进行处理的处理设备的结构示意图。
基于相同构思,本发明实施例中提供一种对周围环境音进行处理的处理设备300,用于执行上述对周围环境音进行处理的方法的实施例,如图3所示,包括接收单元301、确定单元302、处理单元303、合成单元304、发送单元305:
接收单元,用于接收周围环境音;
确定单元,用于根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景;将匹配场景对应的操作信息确定为待执行操作信息;其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;
处理单元,用于根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;
合成单元,用于将操作后信号与用户设备播放的音频信号进行混合,得到合成信号;
发送单元,用于将合成信号输出至耳机中。
可选地,处理设备可位于耳机中,也可位于用户设备侧。
可选地,确定单元,具体用于:
将预设时长内的周围环境音的时频谱与预设的至少一个场景中的每个场景的时频谱进行归一化互相关,得到至少一个互相关值;
若至少一个互相关值中最大的互相关值大于互相关阈值,则将最大的互相关值对应的场景确定为备选场景;备选场景预设有至少一个特征频谱;备选场景的特征频谱为备选场景的时频谱中的全部频谱或部分频谱;
从预设时长内的周围环境音的时频谱中确定出至少一个特征频谱中的每一个特征频谱的能量;
根据预设时长内的周围环境音中的每一个特征频谱的能量,确定预设时长内的周围环境音中所有特征频谱的平均能量;
在确定平均能量大于能量阈值时,将备选场景确定为匹配场景;
其中,特征频谱为:预设时长内的周围环境音的时频谱和备选场景对应的时频谱中均包含的频谱中的全部或部分。
可选地,待执行操作信息包括以下内容中的任一项或任多项的组合:
对周围环境音进行信号增强处理、提示周围环境音的方向、对周围环境音进行语音识别处理、对周围环境音降噪处理。
可选地,待执行操作信息包括对周围环境音进行信号增强处理;
处理单元,具体用于执行以下内容中的任一项:
方式一,待执行操作信息包括对周围环境音进行信号增强处理,则根据后续接收到的周围环境音,确定用于提醒用户注意后续接收到的周围环境音的提示音,并将提示音作为操作后信号。
方式二,待执行操作信息包括对周围环境音进行信号增强处理,则根据后续接收到的周围环境音,确定用于提醒用户注意后续接收到的周围环境音的提示音,并将提示音作为操作后信号,且若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成反相声波,并将反相声波作为操作后信号,其中,预设频带为预设的至少一个噪音的频率范围。
方式三,待执行操作信息包括对周围环境音进行信号增强处理;则通过
滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号。
方式四,待执行操作信息包括对周围环境音进行信号增强处理;则通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号,且若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成反相声波,并将反相声波作为操作后信号,其中,预设频带为预设的至少一个噪音的频率范围。
方式五,待执行操作信息包括对周围环境音进行信号增强处理;则通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将滤波后的周围环境音作为操作后信号。且若后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据后续收到的周围环境音生成反相声波,并将反相声波作为操作后信号,其中,预设频带为预设的至少一个噪音的频率范围。进一步,通过滤波器对后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,还包括:根据滤波器预设的频率响应,以及用于对后续收到的周围环境音降噪的反相声波的频率响应,对预设的滤波器的频率响应进行补偿,得到补偿后的频率响应;通过滤波器,使用补偿后的频率响应对周围环境音中的预设频带内的环境音进行滤除,得到滤波后的周围环境音。
可选地,待执行操作信息包括提示周围环境音的方向;
处理单元,具体用于:
确定耳机的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差和幅度差;
根据确定出的相位差和幅度差,确定出需向耳机的左声道输出左报警提示音,和需向耳机的右声道输出右报警提示音;并将左报警提示音和右报警提示音作为操作后信号;
其中,左报警提示音和右报警提示音之间的相位差与确定出的左拾音麦
克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的相位差相同;
左报警提示音和右报警提示音之间的幅度差与确定出的左拾音麦克所接收到的后续接收到的周围环境音和耳机的右拾音麦克所接收到的后续接收到的周围环境音之间的幅度差相同。
可选地,待执行操作信息包括对周围环境音进行语音识别处理;
处理单元,具体用于执行以下内容中的任一项或任多项的组合:
对周围环境音进行语音识别,根据识别出的语音确定出识别出的语音对应的虚拟提示音,并将虚拟提示音作为操作后信号;
对后续接收到的周围环境音进行语音识别,将识别出的语音的幅值增大,得到幅值增大的语音,并将幅值增大的语音作为操作后信号;
对后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。
可选地,处理单元,在根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,还用于:
将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在用户设备上;或者
将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将转换后的文字信息翻译为预设的语言形式对应的文字信息,并将预设的语言形式对应的文字信息显示在用户设备上。
可选地,待执行操作信息包括对周围环境音降噪处理;
处理单元,具体用于:
根据后续接收到的周围环境音,生成反相声波,并将反相声波作为操作后信号。
可选地,处理单元,还用于:
确定耳机戴在用户头上。
从上述内容可看出,本发明实施例中,根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;将匹配场景对应的操作信息确定为待执行操作信息;根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将合成信号输出至耳机中。由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
图4示例性示出了本发明实施例提供的本发明实施例提供的另一种对周围环境音进行处理的处理设备的结构示意图。
基于相同构思,本发明实施例中提供一种对周围环境音进行处理的处理设备400,用于执行上述对周围环境音进行处理的方法流程,如图4所示,包括处理器401、存储器402、接收器403、发送器404:
处理器,读取存储器存储的程序,执行下述流程:
根据通过接收器接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景;将匹配场景对应的操作信息确定为待执行操作信息;根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将操作后信号与用户设备播放的音频信号进行混
合,得到合成信号,并将合成信号输出至耳机中;其中,匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;可选地,处理器可位于耳机中,也可位于用户设备侧;
接收器,用于在处理器的控制下接收周围环境音;可选地,接收器连接耳机的左拾音麦克和耳机的右拾音麦克,接收器接收耳机的左拾音麦克和耳机的右拾音麦克接收到的周围环境音;另一种实施方式中,接收器也可连接用户设备上的麦克,此时,接收器可接收用户设备上的麦克接收到的周围环境音;
发送器,用于在处理器控制下,将合成信号输出至耳机中;具体来说,发送器连接至耳机的左声道和右声道,发送器将合成信号输出至耳机的左声道和右声道,进而左声道连接左喇叭,右声道连接右喇叭,此时,发送器输出至耳机的左声道的合成信号通过左喇叭进而人耳,发送器输出至耳机的右声道的合成信号通过右喇叭进而人耳。
存储器,用于存储预设的至少一个场景的时频谱,以及匹配场景对应的操作信息,以及存储程序。
可选地,处理器,具体用于执行上述对周围环境音进行处理的方法的实施例。
其中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器代表的一个或多个处理器和存储器代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。接收器和发送器提供用于在传输介质上与各种其他设备通信的单元。处理器负责管理总线架构和通常的处理,存储器可以存储处理器在执行操作时所使用的数据。
从上述内容可看出,本发明实施例中,根据接收到的预设时长内的周围环境音,确定预设时长内的周围环境音的时频谱;根据预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,
匹配场景的时频谱与预设时长内的周围环境音的时频谱匹配;将匹配场景对应的操作信息确定为待执行操作信息;根据待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将合成信号输出至耳机中。由于用户处于什么场景仅仅根据周围环境音中包括什么声音进行分析是不准确的,因为可能存在一些偶发性的声音,基于此,本发明实施例中根据预设时长的周围环境音的时频谱进行分析,进一步提高了对周围环境音的识别的准确性;进而根据预设时长的周围环境音的时频谱,从预设的至少一个场景中确定出匹配场景时,则能确定出与用户所处的真实场景最为接近的匹配场景,进而根据匹配场景对应的操作信息进行操作时,也就是根据用户所处的真实场景进行操作,从而实现了根据用户所处的场景对周围环境音进行更准确的操作,为用户提供更准确的提示以及更优良的服务的目的。
本领域内的技术人员应明白,本发明的实施例可提供为方法、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的设备。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设
备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令设备的制造品,该指令设备实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (30)
- 一种对周围环境音的处理方法,其特征在于,包括:根据接收到的预设时长内的周围环境音,确定所述预设时长内的周围环境音的时频谱;根据所述预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,其中,所述匹配场景的时频谱与所述预设时长内的周围环境音的时频谱匹配;将所述匹配场景对应的操作信息确定为所述待执行操作信息;根据所述待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将所述操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将所述合成信号输出至耳机中。
- 如权利要求1所述的方法,其特征在于,所述根据所述预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景,具体包括:将所述预设时长内的周围环境音的时频谱与预设的所述至少一个场景中的每个场景的时频谱进行归一化互相关,得到至少一个互相关值;若所述至少一个互相关值中最大的互相关值大于互相关阈值,则将所述最大的互相关值对应的场景确定为备选场景;所述备选场景预设有至少一个特征频谱;所述备选场景的特征频谱为所述备选场景的时频谱中的全部频谱或部分频谱;从所述预设时长内的周围环境音的时频谱中确定出所述至少一个特征频谱中的每一个特征频谱的能量;根据所述预设时长内的周围环境音中的每一个特征频谱的能量,确定所述预设时长内的周围环境音中所有特征频谱的平均能量;在确定所述平均能量大于能量阈值时,将所述备选场景确定为所述匹配 场景。
- 如权利要求1所述的方法,其特征在于,所述待执行操作信息包括对周围环境音进行信号增强处理;所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:根据所述后续接收到的周围环境音,确定用于提醒用户注意所述后续接收到的周围环境音的提示音,并将所述提示音作为操作后信号;若所述后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据所述后续收到的周围环境音生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号;其中,所述预设频带为预设的至少一个噪音的频率范围。
- 如权利要求1所述的方法,其特征在于,所述待执行操作信息包括对周围环境音进行信号增强处理;所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:通过滤波器对所述后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将所述滤波后的周围环境音作为操作后信号。
- 如权利要求4所述的方法,其特征在于,所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,还包括:若所述后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据所述后续收到的周围环境音生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号;其中,所述预设频带为预设的至少一个噪音的频率范围。
- 如权利要求5所述的方法,其特征在于,所述通过滤波器对所述后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,还包括:根据所述滤波器预设的频率响应,以及所述用于对所述后续收到的周围环境音降噪的反相声波的频率响应,对所述预设的滤波器的频率响应进行补 偿,得到补偿后的频率响应;通过所述滤波器,使用所述补偿后的频率响应对所述周围环境音中的预设频带内的环境音进行滤除,得到滤波后的周围环境音。
- 如权利要求1所述的方法,其特征在于,所述待执行操作信息包括提示周围环境音的方向;所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:确定所述耳机的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的相位差和幅度差;根据所述确定出的相位差和幅度差,确定出需向所述耳机的左声道输出左报警提示音,和需向所述耳机的右声道输出右报警提示音;并将所述左报警提示音和所述右报警提示音作为操作后信号;其中,所述左报警提示音和所述右报警提示音之间的相位差与所述确定出的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的相位差相同;所述左报警提示音和所述右报警提示音之间的幅度差与所述确定出的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的幅度差相同。
- 如权利要求1所述的方法,其特征在于,所述待执行操作信息包括对周围环境音进行语音识别处理;所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括以下内容中的任一项或任多项的组合:对所述周围环境音进行语音识别,根据所述识别出的语音确定出所述识别出的语音对应的虚拟提示音,并将所述虚拟提示音作为操作后信号;对所述后续接收到的周围环境音进行语音识别,将所述识别出的语音的幅值增大,得到幅值增大的语音,并将所述幅值增大的语音作为操作后信号;对所述后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为所述预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。
- 如权利要求8所述的方法,其特征在于,所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,还包括:将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在所述用户设备上;或者将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将所述转换后的文字信息翻译为所述预设的语言形式对应的文字信息,并将所述预设的语言形式对应的文字信息显示在所述用户设备上。
- 如权利要求1所述的方法,其特征在于,所述待执行操作信息包括对周围环境音降噪处理;所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号,具体包括:根据所述后续接收到的周围环境音,生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号。
- 一种对周围环境音进行处理的处理设备,其特征在于,包括:接收单元,用于接收周围环境音;确定单元,用于根据接收到的预设时长内的周围环境音,确定所述预设时长内的周围环境音的时频谱;根据所述预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景;将所述匹配场景对应的操作信息确定为所述待执行操作信息;其中,所述匹配场景的时频谱与所述预设时长内的周围环境音的时频谱匹配;处理单元,用于根据所述待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;合成单元,用于将所述操作后信号与用户设备播放的音频信号进行混合, 得到合成信号;发送单元,用于将所述合成信号输出至耳机中。
- 如权利要求11所述的设备,其特征在于,所述确定单元,具体用于:将所述预设时长内的周围环境音的时频谱与预设的所述至少一个场景中的每个场景的时频谱进行归一化互相关,得到至少一个互相关值;若所述至少一个互相关值中最大的互相关值大于互相关阈值,则将所述最大的互相关值对应的场景确定为备选场景;所述备选场景预设有至少一个特征频谱;所述备选场景的特征频谱为所述备选场景的时频谱中的全部频谱或部分频谱;从所述预设时长内的周围环境音的时频谱中确定出所述至少一个特征频谱中的每一个特征频谱的能量;根据所述预设时长内的周围环境音中的每一个特征频谱的能量,确定所述预设时长内的周围环境音中所有特征频谱的平均能量;在确定所述平均能量大于能量阈值时,将所述备选场景确定为所述匹配场景。
- 如权利要求11所述的设备,其特征在于,所述待执行操作信息包括对周围环境音进行信号增强处理;所述处理单元,具体用于:根据所述后续接收到的周围环境音,确定用于提醒用户注意所述后续接收到的周围环境音的提示音,并将所述提示音作为操作后信号;若所述后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据所述后续收到的周围环境音生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号;其中,所述预设频带为预设的至少一个噪音的频率范围。
- 如权利要求11所述的设备,其特征在于,所述待执行操作信息包括对周围环境音进行信号增强处理;所述处理单元,具体用于:通过滤波器对所述后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将所述滤波后的周围环境音作为操作后信号。
- 如权利要求14所述的设备,其特征在于,所述处理单元,具体用于:在所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,若所述后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据所述后续收到的周围环境音生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号;其中,所述预设频带为预设的至少一个噪音的频率范围。
- 如权利要求15所述的设备,其特征在于,所述处理单元,具体用于:在所述通过滤波器对所述后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,根据所述滤波器预设的频率响应,以及所述用于对所述后续收到的周围环境音降噪的反相声波的频率响应,对所述预设的滤波器的频率响应进行补偿,得到补偿后的频率响应;通过所述滤波器,使用所述补偿后的频率响应对所述周围环境音中的预设频带内的环境音进行滤除,得到滤波后的周围环境音。
- 如权利要求11所述的设备,其特征在于,所述待执行操作信息包括提示周围环境音的方向;所述处理单元,具体用于:确定所述耳机的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的相位差和幅度差;根据所述确定出的相位差和幅度差,确定出需向所述耳机的左声道输出左报警提示音,和需向所述耳机的右声道输出右报警提示音;并将所述左报警提示音和所述右报警提示音作为操作后信号;其中,所述左报警提示音和所述右报警提示音之间的相位差与所述确定出的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的相位差相同;所述左报警提示音和所述右报警提示音之间的幅度差与所述确定出的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的幅度差相同。
- 如权利要求11所述的设备,其特征在于,所述待执行操作信息包括对周围环境音进行语音识别处理;所述处理单元,具体用于执行以下内容中的任一项或任多项的组合:对所述周围环境音进行语音识别,根据所述识别出的语音确定出所述识别出的语音对应的虚拟提示音,并将所述虚拟提示音作为操作后信号;对所述后续接收到的周围环境音进行语音识别,将所述识别出的语音的幅值增大,得到幅值增大的语音,并将所述幅值增大的语音作为操作后信号;对所述后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为所述预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。
- 如权利要求18所述的设备,其特征在于,所述处理单元,在所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,还用于:将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在所述用户设备上;或者将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将所述转换后的文字信息翻译为所述预设的语言形式对应的文字信息,并将所述预设的语言形式对应的文字信息显示在所述用户设备上。
- 如权利要求11所述的设备,其特征在于,所述待执行操作信息包括对周围环境音降噪处理;所述处理单元,具体用于:根据所述后续接收到的周围环境音,生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号。
- 一种对周围环境音进行处理的处理设备,其特征在于,包括:接收器,用于接收周围环境音;处理器,用于根据通过接收器接收到的预设时长内的周围环境音,确定所述预设时长内的周围环境音的时频谱;根据所述预设时长内的周围环境音的时频谱,从预设的至少一个场景的时频谱中,确定出匹配场景;将所述匹配场景对应的操作信息确定为所述待执行操作信息;根据所述待执行操作信息,以及后续接收到的周围环境音进行操作,确定操作后信号;将所述操作后信号与用户设备播放的音频信号进行混合,得到合成信号,并将所述合成信号通过发送器输出至耳机中;其中,所述匹配场景的时频谱与所述预设时长内的周围环境音的时频谱匹配;发送器,用于在处理器控制下,将所述合成信号输出至耳机中;存储器,用于存储预设的所述至少一个场景的时频谱,以及所述匹配场景对应的操作信息。
- 如权利要求21所述的设备,其特征在于,所述处理器,具体用于:将所述预设时长内的周围环境音的时频谱与预设的所述至少一个场景中的每个场景的时频谱进行归一化互相关,得到至少一个互相关值;若所述至少一个互相关值中最大的互相关值大于互相关阈值,则将所述最大的互相关值对应的场景确定为备选场景;所述备选场景预设有至少一个特征频谱;所述备选场景的特征频谱为所述备选场景的时频谱中的全部频谱或部分频谱;从所述预设时长内的周围环境音的时频谱中确定出所述至少一个特征频谱中的每一个特征频谱的能量;根据所述预设时长内的周围环境音中的每一个特征频谱的能量,确定所述预设时长内的周围环境音中所有特征频谱的平均能量;在确定所述平均能量大于能量阈值时,将所述备选场景确定为所述匹配场景;其中,所述特征频谱为:所述预设时长内的周围环境音的时频谱和所述 备选场景对应的时频谱中均包含的频谱中的全部或部分。
- 如权利要求21所述的设备,其特征在于,所述待执行操作信息包括对周围环境音进行信号增强处理;所述处理器,具体用于:根据所述后续接收到的周围环境音,确定用于提醒用户注意所述后续接收到的周围环境音的提示音,并将所述提示音作为操作后信号;若所述后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据所述后续收到的周围环境音生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号;其中,所述预设频带为预设的至少一个噪音的频率范围。
- 如权利要求21所述的设备,其特征在于,所述待执行操作信息包括对周围环境音进行信号增强处理;所述处理器,具体用于:通过滤波器对所述后续接收到的周围环境音进行滤波,得到滤波后的周围环境音,并将所述滤波后的周围环境音作为操作后信号。
- 如权利要求24所述的设备,其特征在于,所述处理器,具体用于:在所述根据待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,若所述后续接收到的周围环境音中包括的预设频带内的环境音的功率值大于功率门限,根据所述后续收到的周围环境音生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号;其中,所述预设频带为预设的至少一个噪音的频率范围。
- 如权利要求25所述的设备,其特征在于,所述处理器,具体用于:在所述通过滤波器对所述后续接收到的周围环境音进行滤波,得到滤波后的周围环境音之前,根据所述滤波器预设的频率响应,以及所述用于对所述后续收到的周围环境音降噪的反相声波的频率响应,对所述预设的滤波器的频率响应进行补偿,得到补偿后的频率响应;通过所述滤波器,使用所述补偿后的频率响应对所述周围环境音中的预 设频带内的环境音进行滤除,得到滤波后的周围环境音。
- 如权利要求21所述的设备,其特征在于,所述待执行操作信息包括提示周围环境音的方向;所述处理器,具体用于:确定所述耳机的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的相位差和幅度差;根据所述确定出的相位差和幅度差,确定出需向所述耳机的左声道输出左报警提示音,和需向所述耳机的右声道输出右报警提示音;并将所述左报警提示音和所述右报警提示音作为操作后信号;其中,所述左报警提示音和所述右报警提示音之间的相位差与所述确定出的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的相位差相同;所述左报警提示音和所述右报警提示音之间的幅度差与所述确定出的左拾音麦克所接收到的所述后续接收到的周围环境音和所述耳机的右拾音麦克所接收到的所述后续接收到的周围环境音之间的幅度差相同。
- 如权利要求21所述的设备,其特征在于,所述待执行操作信息包括对周围环境音进行语音识别处理;所述处理器,具体用于执行以下内容中的任一项或任多项的组合:对所述周围环境音进行语音识别,根据所述识别出的语音确定出所述识别出的语音对应的虚拟提示音,并将所述虚拟提示音作为操作后信号;对所述后续接收到的周围环境音进行语音识别,将所述识别出的语音的幅值增大,得到幅值增大的语音,并将所述幅值增大的语音作为操作后信号;对所述后续接收到的周围环境音进行语音识别,在确定识别出的语音与预设的语言形式不一致时,将识别出的语音翻译为所述预设的语言形式对应的语音,并将翻译后的语音作为操作后信号。
- 如权利要求28所述的设备,其特征在于,所述处理器,在所述根据 待执行操作信息,以及后续接收到的周围环境音进行操作,得到操作后信号之后,还用于:将所识别出的人类语言转换为文字信息,并将转换后的文字信息显示在所述用户设备上;或者将所识别出的人类语言转换为文字信息,在确定转换后的文字信息与预设的语言形式不一致时,将所述转换后的文字信息翻译为所述预设的语言形式对应的文字信息,并将所述预设的语言形式对应的文字信息显示在所述用户设备上。
- 如权利要求21所述的设备,其特征在于,所述待执行操作信息包括对周围环境音降噪处理;所述处理器,具体用于:根据所述后续接收到的周围环境音,生成用于对所述后续收到的周围环境音降噪的反相声波,并将所述反相声波作为操作后信号。
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