CN105897997B - Method and apparatus for adjusting audio gain - Google Patents
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Abstract
Embodiment of the present invention relate to a kind of methods and apparatus for adjusting audio gain.Specifically, the method for example may include: to generate one section of original audio；It records to the original audio played by stable playback device；Calculate the compensated energy value of frequency point to be adjusted in the original audio through recording；And the original audio is adjusted based on the energy value.Also, provide equipment corresponding with the method.The audio quality for enabling to mobile communication equipment to receive by using the method and apparatus that the embodiments of the present invention provide is more reliable.
Description
Technical field
Each embodiment of the invention generally relates to field of audio processing, and more specifically, each implementation of the invention
Mode is related to a kind of method and apparatus for adjusting audio gain.
Background technique
With the rapid development of semiconductor technology, more and more electronic equipments are dissolved into our daily life.
For example, in daily life, people frequently by such as mobile communication equipment (for example, mobile phone) etc user equipment that
This is communicated.However, mobile communication equipment is in the mistake for transmitting lower frequency audio and upper frequency audio in many cases,
Cheng Zhong has different degrees of decaying or increase on the energy of audio.
It is found through experiments that, mobile communication equipment hardware has different susceptibilitys to the audio of different frequent points, to make
There is different degrees of decaying on audio power at the audio for different frequent points.In order to weaken mobile communication equipment hardware
This characteristic, be intended to provide a kind of audio quality for enabling to mobile communication equipment to receive it is more reliable for adjusting audio
The method and apparatus of gain.
Summary of the invention
To solve the above-mentioned problems, in the present context, the first purpose of each embodiment of the present invention is to provide one kind
Method and apparatus for adjusting audio gain.
The certain embodiments of one aspect according to the present invention provide a kind of method for adjusting audio gain, example
It such as may include: to generate one section of original audio；It records to the original audio played by stable playback device；Calculate warp
The compensated energy value of frequency point to be adjusted in the original audio of recording；And based on the energy value to the original audio
It is adjusted.
The certain embodiments of one aspect according to the present invention provide a kind of method for adjusting audio gain,
Described in the frequency range of original audio can be 5000hz to 14000hz.
The certain embodiments of one aspect according to the present invention provide a kind of method for adjusting audio gain,
Described in stable playback device can play different frequent points audio after, energy attenuation is uniform and relatively small.
The certain embodiments of one aspect according to the present invention provide a kind of method for adjusting audio gain, can
To pass through formulaTo calculate frequency point benefit to be adjusted in the original audio through recording
Energy value after repaying.
The certain embodiments of one aspect according to the present invention provide a kind of method for adjusting audio gain,
Described in the value range of k can from 2.0 to 4.0.
The certain embodiments of one aspect according to the present invention provide a kind of method for adjusting audio gain,
In the original audio is adjusted may further include based on the energy value: the energy of decaying is compensated；With
And the energy of enhancing is decayed.
Certain embodiments according to a further aspect of the invention provide a kind of equipment for adjusting audio gain, example
It such as may include: generating means, be configurable to generate one section of original audio；Recording device is configured as to passing through stable playback
The original audio that device plays is recorded；Computing device is configured as calculating in the original audio through recording wait adjust
The whole compensated energy value of frequency point；And adjustment device, it is configured as adjusting the original audio based on the energy value
It is whole.
Certain embodiments according to a further aspect of the invention provide a kind of equipment for adjusting audio gain,
Described in the frequency range of original audio can be 5000hz to 14000hz.
The certain embodiments of one aspect according to the present invention provide a kind of equipment for adjusting audio gain,
Described in stable playback device can play different frequent points audio after, energy attenuation is uniform and relatively small.
The certain embodiments of one aspect according to the present invention provide a kind of equipment for adjusting audio gain, can
To pass through formulaTo calculate frequency point benefit to be adjusted in the original audio through recording
Energy value after repaying.
The certain embodiments of one aspect according to the present invention provide a kind of equipment for adjusting audio gain,
Described in the value range of k can from 2.0 to 4.0.
The certain embodiments of one aspect according to the present invention provide a kind of equipment for adjusting audio gain,
Middle regulator may further include: compensation device, be configured as compensating the energy of decaying；And attenuating device,
It is configured as decaying the energy of enhancing.
The exemplary solution that exemplary embodiment of the invention provides can at least bring following significant technology effect
Fruit: by adjusting audio gain, can alleviate the influence caused by audio power of mobile communication equipment hardware, so that mobile
The audio quality that communication equipment receives is more reliable.
Detailed description of the invention
The following detailed description is read with reference to the accompanying drawings, above-mentioned and other mesh of exemplary embodiment of the invention
, feature and advantage will become prone to understand.In the accompanying drawings, if showing by way of example rather than limitation of the invention
Dry embodiment, in which:
Fig. 1 is to diagrammatically illustrate illustrative embodiments, the method stream for adjusting audio gain according to the present invention
Cheng Tu；
Fig. 2 is to diagrammatically illustrate illustrative embodiments, the equipment frame for adjusting audio gain according to the present invention
Figure；
Fig. 3 is the energy curves figure for diagrammatically illustrating test and obtaining；
Fig. 4 is the spectrogram for diagrammatically illustrating illustrative embodiments according to the present invention and generating one section of original audio；
Fig. 5 is to diagrammatically illustrate the corresponding energy profile of corresponding to Fig. 4 frequency point；And
Fig. 6 be diagrammatically illustrate will from exemplary embodiment of the invention be benefited and can be the present invention it is exemplary
The block diagram of the mobile terminal of embodiment exemplary device.
In the accompanying drawings, identical or corresponding label indicates identical or corresponding part.
Specific embodiment
The principle and spirit of the invention are described below with reference to several illustrative embodiments.It should be appreciated that providing this
A little embodiments are used for the purpose of making those skilled in the art can better understand that realizing the present invention in turn, and be not with any
Mode limits the scope of the invention.
A specific embodiment of the invention is described with reference to the accompanying drawing.
Referring initially to Fig. 1, wherein Fig. 1 be diagrammatically illustrate according to the present invention illustrative embodiments, for adjusting
The method flow diagram of audio gain.
As shown in Figure 1, each illustrative embodiments according to the present invention, method 100 for example may include generating one section of original
Beginning audio (S101).
In an exemplary embodiment, the frequency range of the original audio can be 5000hz to 14000hz.Such as
Below with reference to shown in Fig. 4 and Fig. 5, when the frequency range of the original audio is 5000hz to 14000hz, Energy distribution ratio
Compared with concentration, specifically in 2.94718E+13 between 2.95802E+13.
Further, this method 100 can for example record to the original audio played by stable playback device
(S102)。
In an exemplary embodiment, the stable playback device can be after the audio for playing different frequent points, energy
Amount decaying is uniform and relatively small.For example, in practical applications, the loudspeaker that iphone can be used is broadcast as the stabilization
Device is put, and assumes that the speaker energy decaying of iphone is uniform and relatively small.
Further, this method 100 can for example calculate in the original audio through recording after frequency point to be adjusted compensation
Energy value (S103).
In an exemplary embodiment, formula can be passed throughTo calculate warp
The compensated energy value of frequency point to be adjusted in the original audio of recording.Wherein, the value range of k can from 2.0 to 4.0,
And in practical applications, the floating range of the k value and little.
Further, this method 100 for example can be adjusted (S104) to the original audio based on the energy value.
In an exemplary embodiment, being adjusted based on the energy value to the original audio can be further
It include: to compensate the energy of decaying；And the energy of enhancing is decayed.Specifically, it is received in mobile communication equipment
To after audio stream, the energy of decaying can be compensated by formula described above, and the energy of enhancing is carried out
Decaying.So as to eliminate the energy fluctuation that mobile communication equipment is generated when receiving audio to a certain extent, so that energy
Distribution on frequency spectrum is more uniform.
It will be understood by those skilled in the art that manner as described above is the illustrative examples of the ad hoc fashion, and
It is not limited only to this, the ad hoc fashion can also be other modes.
Below with reference to Fig. 2, it illustrates illustrative embodiments according to the present invention, equipment for adjusting audio gain
200 schematic block diagram.Equipment 200 for example may include: generating means 201, be configurable to generate one section of original audio；Recording
Device 202 is configured as recording to the original audio played by stable playback device；Computing device 203, is configured
To calculate the compensated energy value of frequency point to be adjusted in the original audio through recording；And adjustment device 204, it is configured as
The original audio is adjusted based on the energy value.
In an exemplary embodiment, wherein the frequency range of the original audio can be 5000hz extremely
14000hz。
In an exemplary embodiment, wherein the stable playback device can play different frequent points audio it
Afterwards, energy attenuation is uniform and relatively small.
In an exemplary embodiment, formula can be passed throughTo calculate warp
The compensated energy value of frequency point to be adjusted in the original audio of recording.
In an exemplary embodiment, wherein the value range of the k can from 2.0 to 4.0.
In an exemplary embodiment, middle regulator may further include: compensation device, be configured as by
The energy of decaying compensates；And attenuating device, it is configured as decaying the energy of enhancing.
For clarity, the sub-device that each device is included is not shown in Figure 2.It will be appreciated, however, that equipment
The device recorded in 200 is corresponding with the step in the method 100 for referring to Fig. 1 description respectively.As a result, above with respect to the side of Fig. 1
The operation and feature that method 100 describes are equally applicable to equipment 200 and device wherein included and sub-device, and details are not described herein.
It should be appreciated that equipment 200 can use various modes to realize.For example, in some embodiments, equipment 200
Software and/or firmware module be can use to realize.In addition, equipment 200 can use hardware module also to realize.For example, setting
Standby 200 can be implemented as integrated circuit (IC) chip or specific integrated circuit (ASIC).Equipment 200 also can be implemented as on piece system
It unites (SOC).In addition, equipment 200 can use the combination of hardware module and software and/or firmware module also to realize.Now
Know or in the future exploitation other modes be also it is feasible, the scope of the present invention is not limited in this respect.
The example of one practical application is described below with reference to Fig. 3 to Fig. 5.Referring initially to Fig. 3,
Fig. 3 is the energy curves figure for diagrammatically illustrating test and obtaining.
It is experimentally confirmed, the meeting on audio power when transmitting lower frequency sound and upper frequency sound of many mobile phones
There are different degrees of decaying or increase.As shown in figure 3, the figure is the loudspeaker that motorola ME860 money mobile phone records iphone
The sound of sending (energy of each frequency point is equal in sound, and assumes that the speaker energy decaying of iphone is little).Fig. 3
It diagrammatically illustrates by testing obtained energy curves figure, wherein abscissa is equal in [5000hz, 14000hz] range
127 points of even distribution, ordinate is audio energy values.As can be seen from Figure 3 with the variation feelings for increasing energy of frequency
Condition, that is, energy size distribution is in the range of [6360169,84618799837].This illustrates mobile phone hardware to different frequent points
There is different susceptibilitys, to cause have different degrees of decaying for different frequent points audio power.
Fig. 4 is the spectrogram for diagrammatically illustrating illustrative embodiments according to the present invention and generating one section of original audio.Its
In, show one section original audio of the frequency in [5000hz, 14000hz] range.Fig. 5 be diagrammatically illustrate in Fig. 4
The corresponding energy profile of corresponding frequency point.As shown in figure 5, the Energy distribution of original audio relatively concentrates on [2.94718E in Fig. 4
+ 13,2.95802E+13] in the range of.
By the way that audio shown in Fig. 4 is placed into metastable player.Wherein, " stabilization " refers to player plays
After the sound of different frequent points, energy attenuation is uniform and relatively small.In this example, the loudspeaker of iphone is used to broadcast
The audio stream is put, and using tested mobile phone to the audio sound-recording.By the audio stream after recording, the energy of each frequency point is obtained
Amount, analyzes its energy curve figure.According to the variation of energy, one group of reasonable data is calculated.Wherein, calculation formula are as follows:It should be noted that wherein n is to participate in the number of all frequency points of frequency sweep (in the example
In for 128), powiFor i-th of frequency point energy value, pow ' in frequency sweep dataiEnergy value for the frequency point i for needing to compensate, pow "i
For pow 'iCompensated energy value, the value range of k is 2.0 to 4.0.Specifically, value is 2.8 to the k value in this example,
This value is generally floated less.When mobile phone receives audio stream, the energy of decaying can be compensated by the formula, and will
The energy of enhancing is decayed.To can to a certain degree eliminate mobile phone hardware receive sound when caused by energy fluctuation,
Keep distribution of the energy on frequency spectrum more uniform.
Below with reference to Fig. 6, it illustrates the schematic frames for the mobile terminal 600 for being suitable for being used to practice embodiment of the present invention
Figure.In the example depicted in fig. 6, mobile terminal 600 is the mobile device with wireless communication ability.However, it is possible to manage
Solution, this is merely exemplary and not limiting.Other kinds of mobile terminal can also easily use implementation of the invention
Mode, such as portable digital-assistant (PDA), pager, mobile computer, mobile TV, game station, calculating on knee
Machine, camera, video recorder, GPS device and other kinds of voice and text communication system.Fixed mobile terminal equally may be used
Easily to use embodiments of the present invention.
Mobile terminal 600 includes one or antenna 618, is operationally led to transmitter 614 and receiver 616
Letter.Mobile terminal 600 further includes processor 612 or other processing elements, provide respectively the signal for going to transmitter 614 and
Receive the signal from receiver 616.Signal include according to the signaling information of the air-interface standard of appropriate cellular system, and
It further include the data that user speech, received data and/or user generate.In this regard, mobile terminal 600 can utilize one
Or multiple air interface standard, communication protocols, modulation type and access style are operated.As demonstration, mobile terminal
600 can be grasped according to any agreement in multiple first generation, the second generation, the third generation and/or forth generation communication protocol etc.
Make.For example, mobile terminal 600 can be according to the second generation (G) wireless communication protocol IS-136 (TDMA), GSM and IS-95
(CDMA) it is operated, or is wirelessly communicated according to the third generation (G) of such as UMTS, CDMA2000, WCDMA and TD-SCDMA
Agreement is operated to be operated, or according to forth generation (4G) wireless communication protocol and/or similar agreement.
It is appreciated that processor 612 includes circuit needed for realizing the function of mobile terminal 600.For example, processor 612
It may include digital signal processor device, microprocessor device, various analog-digital converters, digital analog converter and other support electricity
Road.The control of mobile terminal 600 and signal processing function distribute therebetween according to the respective ability of these equipment.Processor 612
It thus can also include the function of carrying out convolutional encoding and intertexture to message and data before modulation and transmission.Processor 612
Internal voice coder can also be also comprised, and may include internal data modem.In addition, processor 612 can
To include the function of being operated to the one or more software programs that can store in memory.For example, processor 612 can
Linker, such as traditional Web browser can be operated.Linker then can permit mobile terminal 600 for example by
Emit according to Wireless Application Protocol (WAP), hypertext transfer protocol (HTTP) etc. and receive web content and is (such as location-based
Content and/or other web page contents).
Mobile terminal 600 can also include user interface, such as may include earphone or loudspeaker 624, ringer
622, microphone 626, display screen 628 and handwriting equipment 631, all these equipment are both coupled to processor 612.Mobile terminal
600 may include keypad 630.Keypad 630 may include traditional number key (0-9) and relative keys (#, *), and be used for
Operate other keys of mobile terminal 600.Alternatively, keypad 630 may include traditional QWERTY keypad arrangement.Keypad
630 can also include various soft keys associated with function.Mobile terminal 600 can also include acceleration induction module 636, use
In the movement (movement) that capture user makes.
Specifically, display screen 628 may include touch-screen and/or neighbouring formula screen, and user can be by directly grasping
Make screen and operates mobile terminal 600.At this point, display screen 628 functions simultaneously as both input equipment and output equipment.Such
In embodiment, handwriting equipment 631 may be configured to receive user for example, by common pen, dedicated stylus and/or finger
The input provided on display screen 628, including give directions input and gesture input.
In addition, mobile terminal 600 may include such as control stick interface equipment or other for input interface.It is mobile
Terminal 600 further includes battery 634, such as vibrating battery group, for powering for various circuits needed for operation mobile terminal 600,
And mechanical oscillation are optionally provided as detectable output.
Mobile terminal 600 may further include Subscriber Identity Module (UIM) 638.UIM 638 is usually to have built-in place
Manage the memory devices of device.UIM 638 for example may include subscriber identity module (SIM), Universal Integrated Circuit Card (UICC), lead to
With subscriber identity module (USIM), removable Subscriber Identity Module (R-UIM) etc..UIM 638 is commonly stored and mobile subscriber phase
The cell of pass.
Mobile terminal 600 can also have memory.For example, mobile terminal 600 may include volatile memory 640,
Volatile random access memory (RAM) for example including the cache area for data temporary storage.Mobile terminal 600
It can also include other nonvolatile memories 642, can be Embedded and/or moveable.Nonvolatile memory
642 can additionally or alternatively include such as EEPROM and flash memory.Memory can store mobile terminal 600 and be used
Multiple pieces of information and data in Arbitrary Term, to realize the function of mobile terminal 600.
The mobile terminal 600 may be implemented above in association with Fig. 1 method described and be configured to retouch as in conjunction with Fig. 2
The equipment stated.
It should be appreciated that structural block diagram described in Fig. 6 is shown for illustrative purposes only, rather than to model of the present invention
The limitation enclosed.In some cases, it can increase or reduce certain equipment as the case may be.
It should be noted that embodiments of the present invention can be realized by the combination of hardware, software or software and hardware.
Hardware components can use special logic to realize；Software section can store in memory, by instruction execution system appropriate
System, such as microprocessor or special designs hardware execute.It will be understood by those skilled in the art that above-mentioned equipment
Computer executable instructions can be used and/or be included in the processor control code with method and realize, such as in such as magnetic
Disk, the mounting medium of CD or DVD-ROM, such as read-only memory (firmware) programmable memory or such as optics or electricity
Such code is provided in the data medium of subsignal carrier.Equipment and its module of the invention can be by such as ultra-large
The semiconductor or such as field programmable gate array of integrated circuit or gate array, logic chip, transistor etc. can be compiled
The hardware circuit realization of the programmable hardware device of journey logical device etc., can also be soft with being executed by various types of processors
Part is realized, can also be realized by the combination such as firmware of above-mentioned hardware circuit and software.
It should be noted that although being referred to the several devices or sub-devices of equipment in the above detailed description, this stroke
Divide only not enforceable.In fact, embodiment according to the present invention, the feature of two or more above-described devices
It can be embodied in one apparatus with function.Conversely, the feature and function of an above-described device can further be drawn
It is divided by multiple devices and embodies.
In addition, although describing the operation of the method for the present invention in the accompanying drawings with particular order, this do not require that or
Hint must execute these operations in this particular order, or have to carry out shown in whole operation be just able to achieve it is desired
As a result.On the contrary, the step of describing in flow chart can change and execute sequence.Additionally or alternatively, it is convenient to omit certain steps,
Multiple steps are merged into a step to execute, and/or a step is decomposed into execution of multiple steps.
Although detailed description of the preferred embodimentsthe present invention has been described by reference to several, it should be appreciated that, the present invention is not limited to
Disclosed specific embodiment.The present invention is directed to cover various modifications included in spirit and scope of the appended claims
And equivalent arrangements.Scope of the following claims is to be accorded the broadest interpretation, to include all such modifications and equivalent knot
Structure and function.
Claims (12)
1. a kind of method for adjusting audio gain, comprising:
Generate one section of original audio；
It records to the original audio played by stable playback device；
Calculate the compensated energy value of frequency point to be adjusted in the original audio through recording；And
The original audio is adjusted based on the energy value.
2. according to the method described in claim 1, wherein the frequency range of the original audio is 5000hz to 14000hz.
3. according to the method described in claim 1, wherein the stable playback device play different frequent points audio after, energy
Decaying is uniform.
4. according to the method described in claim 1, passing through formulaTo calculate through recording
The original audio in the compensated energy value of frequency point to be adjusted, wherein powiFor i-th of frequency point energy value in frequency sweep data,
pow′iEnergy value for the frequency point i for needing to compensate, pow "iFor pow 'iCompensated energy value.
5. according to the method described in claim 4, the wherein value range from 2.0 to 4.0 of the k.
6. according to the method described in claim 1, being wherein adjusted further based on the energy value to the original audio
Include:
The energy of decaying is compensated；And
The energy of enhancing is decayed.
7. a kind of equipment for adjusting audio gain, comprising:
Generating means are configurable to generate one section of original audio；
Recording device is configured as recording to the original audio played by stable playback device；
Computing device is configured as calculating the compensated energy value of frequency point to be adjusted in the original audio through recording；And
Device is adjusted, is configured as being adjusted the original audio based on the energy value.
8. equipment according to claim 7, wherein the frequency range of the original audio is 5000hz to 14000hz.
9. equipment according to claim 7, wherein the stable playback device is after the audio for playing different frequent points, energy
Decaying is uniform.
10. equipment according to claim 7, passes through formula To calculate through recording
The original audio in the compensated energy value of frequency point to be adjusted, wherein powiFor i-th of frequency point energy value in frequency sweep data,
pow′iEnergy value for the frequency point i for needing to compensate, pow "iFor pow 'iCompensated energy value.
11. equipment according to claim 10, wherein the value range from 2.0 to 4.0 of the k.
12. equipment according to claim 7, middle regulator further comprise:
Compensation device is configured as compensating the energy of decaying；And
Attenuating device is configured as decaying the energy of enhancing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410813969.0A CN105897997B (en) | 2014-12-18 | 2014-12-18 | Method and apparatus for adjusting audio gain |
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| CN201410813969.0A CN105897997B (en) | 2014-12-18 | 2014-12-18 | Method and apparatus for adjusting audio gain |
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| CN106328159B (en) * | 2016-09-12 | 2021-07-09 | 优酷网络技术（北京）有限公司 | Audio stream processing method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155438A (en) * | 2006-09-26 | 2008-04-02 | 张秀丽 | Frequency response adaptive equalization method for audio device |
| CN101567673A (en) * | 2009-05-21 | 2009-10-28 | 深圳市科莱特斯科技有限公司 | Audio equalizing method and device |
| EP2624254A1 (en) * | 2012-01-23 | 2013-08-07 | Fujitsu Limited | Audio processing device and audio processing method for de-reverberation |
| CN103442115A (en) * | 2013-08-23 | 2013-12-11 | 杭州爱华仪器有限公司 | Mobile phone frequency response automatic calibration system and automatic calibration method thereof |
| CN104143337A (en) * | 2014-01-08 | 2014-11-12 | 腾讯科技（深圳）有限公司 | Method and device for improving tone quality of sound signal |
-
2014
- 2014-12-18 CN CN201410813969.0A patent/CN105897997B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155438A (en) * | 2006-09-26 | 2008-04-02 | 张秀丽 | Frequency response adaptive equalization method for audio device |
| CN101567673A (en) * | 2009-05-21 | 2009-10-28 | 深圳市科莱特斯科技有限公司 | Audio equalizing method and device |
| EP2624254A1 (en) * | 2012-01-23 | 2013-08-07 | Fujitsu Limited | Audio processing device and audio processing method for de-reverberation |
| CN103442115A (en) * | 2013-08-23 | 2013-12-11 | 杭州爱华仪器有限公司 | Mobile phone frequency response automatic calibration system and automatic calibration method thereof |
| CN104143337A (en) * | 2014-01-08 | 2014-11-12 | 腾讯科技（深圳）有限公司 | Method and device for improving tone quality of sound signal |
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