CN205028649U

CN205028649U - Ware is sheltered to multichannel sound

Info

Publication number: CN205028649U
Application number: CN201520760362.0U
Authority: CN
Inventors: 沈苏
Original assignee: Suzhou Yitian Acoustic Technology Co Ltd
Current assignee: Suzhou Yitian Acoustic Technology Co Ltd
Priority date: 2015-09-29
Filing date: 2015-09-29
Publication date: 2016-02-10
Anticipated expiration: 2025-09-29

Abstract

Ware is sheltered to multichannel sound, its each terminal module (20) are including sound receiving arrangement (24), sound acquisition device (26) and audio player (28). Sound receiving arrangement is connected with each terminal module's sound acquisition device audio frequency. Host computer (10) include language select switch (12), memory (14) and signal processor (16), language select switch output language select command, and including a plurality of language memory cell in the memory, the memory is according to the corresponding language memory cell's of language select command output pronunciation interfering signal. Sound acquisition device converts sound into speech signal. The first signal processing unit makes up after cutting apart the paragraph with speech signal at random among the signal processor, generates first masking signal, after making up pronunciation interfering signal at random, the 2nd signal processing unit generates the second masking signal. According to first masking signal, second masking signal, audio player broadcasts that first shelter letter sound and letter sound is sheltered to the second.

Description

Multi-channel sound masking device

Technical Field

The utility model relates to a sound masking interference unit especially relates to a multichannel sound masking device.

Background

In a speech conversation, often private content does not want others to know it or to record and evidence others in the conversation. The existing mode is usually realized by shielding, pre-discovering or partially interfering transmission signals of equipment for recording, eavesdropping and the like of other people, and the existing mode cannot prevent other people from directly understanding conversation contents, and can fail to interfere the signals of the equipment for recording, eavesdropping and the like and influence normal telecommunication communication.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multichannel sound masker. It can directly prevent others from understanding, mastering and effectively recording conversation contents.

The utility model provides a multichannel sound masking device, it includes a host computer and a plurality of terminal module. Each terminal module comprises a sound acquisition device, a sound receiving device and an audio player. Wherein the sound acquiring means is capable of converting sound into a speech signal. The sound receiving device is in audio connection with the sound acquiring devices of the terminal modules. The host comprises a language selection switch, a memory and a signal processor, wherein the language selection switch can output a language selection command, the memory is in signal connection with the language selection switch and comprises a plurality of language storage units, a plurality of voice interference signals are stored in each language storage unit, and the memory can output the voice interference signals of the corresponding language storage unit according to the language selection command. The signal processor includes a first signal processor and a second signal processing unit. The first signal processing unit is connected with the sound acquisition device through a signal, divides the voice signal into a plurality of segment-lag random combinations and generates a first masking signal. The second signal processing unit is connected with the memory through a signal, and generates a second masking signal after randomly combining the voice interference signals. The audio player is connected with the signal processor through a signal, and can generate a first masking sound for playing the first masking signal and generate a second masking sound for playing the second masking signal.

In an exemplary embodiment of the multi-channel sound masker, the audio player may further be connected to a sound acquiring device, and the sound acquiring device acquires the voice signal and outputs a masking sound outputting command to the audio player to control the audio player to play the second masking sound or to play the first masking sound and the second masking sound simultaneously.

In an exemplary embodiment of the multi-channel sound masker, the audio player is a speaker.

In an exemplary embodiment of the multi-channel sound masker, the sound capturing device is a microphone or a vibration pickup.

In an exemplary embodiment of the multichannel sound masker, the sound receiving device is a sound proof headphone.

In an exemplary embodiment of the multi-channel sound masker, the host further comprises a recording device connectable to the external storage device, the recording device being capable of audio connection with the sound capture device of each terminal module.

The above features, technical features, advantages and implementation of the multi-channel sound masker will be further explained in the following, in a clearly understandable manner, with reference to the accompanying drawings, illustrating preferred embodiments.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is a schematic diagram illustrating an exemplary implementation of a multi-channel sound masker.

Fig. 2 is a schematic diagram illustrating the structure of a main unit and a terminal module of the multi-channel sound masker.

Fig. 3 is a schematic diagram illustrating another exemplary embodiment of a multi-channel sound masker.

Description of the reference symbols

12 language bag selecting switch

14 memory

142 language memory cell

16 signal processor

162 first signal processing unit

164 second signal processing unit

24 sound receiving device

26 sound acquisition device

28 Audio player

30 external storage device

S1 language selection command

S2 Voice interference Signal

S3 Speech Signal

S4 first masking signal

S5 second masking signal.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same or similar components.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, for simplicity and clarity of understanding, only one of the components having the same structure or function is schematically illustrated or labeled in some of the drawings.

Fig. 1 is a schematic diagram illustrating an exemplary implementation of a multi-channel sound masker. As shown in fig. 1, the multi-channel sound masker includes a main body 10 and a plurality of terminal modules 20. The connection relationship between each terminal module 20 and the host 10 is shown in fig. 2.

As shown in fig. 2, each terminal module 20 includes a sound receiving device 24, a sound capture device 26, and an audio player 28. Wherein.

The sound capture device 26 may convert the user' S voice into a speech signal S3, which may be a microphone or a vibration pickup.

The sound receiving means 24 is, for example, a sound-proof headphone, the sound receiving means 24 of the terminal module 20 shown in the figure being acoustically connectable to the sound acquiring means 26 of the other terminal modules 20, and the sound acquiring means 26 of the terminal module 20 shown in the figure being acoustically connectable to the sound receiving means 24 of the other terminal modules 20.

An audio player 28, which may be a speaker.

As shown in fig. 2, the host 10 includes a language selection switch 12, a memory 14, and a signal processor 16. Wherein,

the language selection switch 12 may output a language selection command S1, which may be a manual switch on the host computer 10, to be operated by an operator.

The memory 14 stores a plurality of language storage units, each language storage unit 142 stores a plurality of speech interference signals S2, the speech interference signals S2 in each language storage unit 142 can be classified according to language type and language environment, for example, some language storage units 142 store speech interference signals composed of chinese, some language storage units 142 store speech interference signals composed of korean, and of course, more detailed separation can be performed according to regional dialects. Examples of the speech environment include a speech interference signal simulating a square and a speech interference signal simulating a station. The speech interference signal stored in each speech storage unit 142 may be different according to design requirements. The memory 14 may output the voice interference signal S2 of the corresponding language storage unit 142 according to the language selection command S1.

The signal processor 16, such as an ARM processor, a coder/decoder (CODEC), etc., includes a first signal processing unit 162 and a second signal processing unit 164, and the first signal processing unit 162 is connected to the sound acquiring device 26. The second signal processor 164 is signally connected to the memory 14. The first signal processing unit 162 may divide the speech signal S3 into a plurality of small segments, and randomly combine the small segments to generate a first masking signal S4. The second signal processing unit 164 may randomly combine the voice interference signals S2 to generate a second masking signal S5.

The audio player 28 of each terminal module 20 is connected to the first signal processing unit 162 and the second signal processing unit 164, respectively, and can generate the first masking signal S4 to be played back and generate the second masking signal S5 to be played back.

The multi-channel sound masker can be used in a conference, each of the host and the participants uses one terminal module, and the conference contents can be communicated among the persons through the sound receiving device 24 and the sound acquiring device 26. Before the conference is started, the host 10 operates the language selection switch according to the information such as the language type and language environment of the participants, and outputs a language selection command. The memory 14 outputs the voice interference signal S2 of the corresponding language storage unit 142 according to the language selection command S1. The second processing unit 164 of each terminal module randomly combines the voice interference signals S2 to generate a second masking signal S5, and generates a second masking sound through the audio player 28 for broadcasting, and within a certain range around each person, the speaking sound of each person is covered by the second masking sound, so that others far away from the host or participants within a certain range cannot listen to the conference content, and even if a recording device is used, the masking sound is recorded and cannot be heard, and through the sound receiving device 24 and the sound acquiring device 26, clear conference content can be received between the host and each participant. While the conference speaker starts speaking and making a sound, the sound acquiring device 26 may convert the speaking sound into a speech signal S3, and the first signal processing unit 162 may divide the speech signal S3 into a plurality of segments and randomly combine the segments to generate a first masking signal S4, and play the first masking signal S4 as the first masking sound by the audio player 28. The first masking sound and the second masking sound simultaneously cover the speaking sound, so that the masking effect can be further improved, and the conference content can be kept secret within any distance as the terminal module 20 can be far away from the host 10. In addition, because the first masking sound needs to be generated after the operator starts speaking, the first masking sound has delay relative to the speaking of the operator, and the second masking sound can be played at any time, so that the problem is solved.

In the embodiment shown in fig. 2, the audio player 28 may further be connected to the sound acquiring device 26, and the sound acquiring device 26 acquires the voice signal S3 and outputs a masking sound emission command S6 to the audio player 28 to control the audio player 28 to play the second masking sound or play the first masking sound and the second masking sound simultaneously. In this manner, the multi-channel sound masker may be enabled to emit a masking sound only when the participant is speaking.

As shown in fig. 3, the host 10 of the multichannel sound masker may further include a recording device 16 capable of being connected to the external storage device 30, and the recording device 16 can be connected to the sound acquiring device 26 of each terminal module 20 for recording the conference content, and the conference content is stored in the external storage device 30 after recording, so as to improve the security.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above list of details is only for the practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.

Claims

1. Multichannel sound masker, characterized in that it comprises a main unit (10) and a plurality of terminal modules (20), wherein

Each of the terminal modules (20) includes:

a sound acquiring means (26) capable of converting sound into a voice signal (S3),

a sound receiving means (24) in audio connection with said sound capturing means (26) of each of said terminal modules, and

an audio player (28);

the host (10) includes:

a language selection switch (12) capable of outputting a language selection command (S1),

a memory (14) in signal connection with the language selection switch (12), wherein a plurality of language storage units (142) are included, each language storage unit (142) stores a plurality of voice interference signals (S2), the memory (14) can output the voice interference signals (S2) of the corresponding language storage unit (142) according to the language selection command (S1), and

a signal processor (16) comprising:

a first signal processing unit (162) connected to the sound acquiring means (26) and adapted to split the speech signal (S3) into a plurality of randomly combined segments to generate a first masking signal (S4), the audio player (28) being adapted to generate the first masking signal (S4) as a first masking sound for playback, and

a second signal processing unit (164) connected to the memory (14) and capable of generating a second masking signal (S5) by randomly combining the voice interference signal (S2), wherein the audio player (28) is capable of generating a second masking sound from the second masking signal (S5) and playing the second masking sound.

2. The multichannel sound masker of claim 1, wherein the audio player (28) is further signally connected to the sound capture device (26), the sound capture device (26) capturing the speech signal (S3) while outputting a masking sound issuance command (S6) to the audio player (28) to control the audio player (28) to play out the second masking sound, or to play out the first masking sound and the second masking sound simultaneously.

3. The multi-channel sound masker of claim 1, wherein the audio player (28) is a speaker.

4. A multi-channel sound masker as claimed in claim 1, wherein the sound capturing device (26) is a microphone or a vibration pickup.

5. The multichannel sound masker of claim 1, wherein the sound receiving device is a sound proof headphone.

6. A multi-channel sound masker as claimed in claim 1, wherein the host unit (10) further comprises a recording means (18) connectable to an external storage device (30), the recording means (18) being capable of audio connection to the sound capture means (26) of each of the terminal modules (20).