CN109360578A - Echo cancel method, audio frequency apparatus and the readable storage medium storing program for executing of audio frequency apparatus - Google Patents
Echo cancel method, audio frequency apparatus and the readable storage medium storing program for executing of audio frequency apparatus Download PDFInfo
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- CN109360578A CN109360578A CN201811502338.1A CN201811502338A CN109360578A CN 109360578 A CN109360578 A CN 109360578A CN 201811502338 A CN201811502338 A CN 201811502338A CN 109360578 A CN109360578 A CN 109360578A
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- echo
- audio frequency
- frequency apparatus
- voice signal
- microphone
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02166—Microphone arrays; Beamforming
Abstract
The invention discloses a kind of echo cancel methods of audio frequency apparatus, comprising: obtains the received voice signal of microphone of the audio frequency apparatus；Frequency compensation processing is carried out to the voice signal；It will treated that the voice signal carries out echo cancellor by frequency compensation；The voice signal after echo cancellor is carried out frequency compensation to handle, to obtain the echo signal in the voice signal.The invention also discloses a kind of audio frequency apparatus and computer readable storage mediums.The present invention can reduce the influence to echo cancellor when the received voice signal of microphone of audio frequency apparatus is distorted.
Description
Technical field
The present invention relates to Audiotechnica field more particularly to a kind of echo cancel method of audio frequency apparatus, audio frequency apparatus and
Computer readable storage medium.
Background technique
The microphone array applied on the audio frequency apparatuses such as intelligent sound box at present, each received audible warning of microphone
Frequency response has difference, the especially microphone at loudspeaker rear, and the frequency response of the audible warning received is easy to produce in some frequency range
Raw valley point.In this way, intelligent sound box can be made to generate more serious distortion along with the noise that the intelligent sound box generates.At this point,
When being handled using echo cancellation algorithm sound, for this more serious distortion, easily causes algorithm erroneous judgement or influence
Processing accuracy, to influence the effect of echo cancellor.
Summary of the invention
The main purpose of the present invention is to provide a kind of echo cancel method of audio frequency apparatus, audio frequency apparatus and computers can
Read storage medium, it is intended to when the received voice signal of the microphone of audio frequency apparatus is distorted, reduce the influence to echo cancellor.
To achieve the above object, the present invention provides a kind of echo cancel method of audio frequency apparatus, and the audio frequency apparatus returns
Sound removing method the following steps are included:
Obtain the received voice signal of microphone of the audio frequency apparatus；
Frequency compensation processing is carried out to the voice signal；
It will treated that the voice signal carries out echo cancellor by frequency compensation；
The voice signal after echo cancellor is carried out frequency compensation to handle, to obtain in the voice signal
Echo signal.
Preferably, the microphone is microphone array, and the audio frequency apparatus also has loudspeaker, described to believe the sound
Number carry out frequency compensation processing the step of include:
Obtain the loudspeaker into the microphone array frequency response of each microphone and the loudspeaker to preset reference
The default frequency response of microphone；
Calculate the difference between the default frequency response and each frequency response；
According to the difference, received voice signal is corresponded to each microphone and carries out frequency compensation.
Preferably, the voice signal by after echo cancellor carries out frequency compensation and handles, to obtain
The step of stating the echo signal in voice signal include:
Take the negative value of the difference；
According to the negative value of the difference, frequency compensation is carried out to the voice signal after echo cancellor and is handled,
To obtain the echo signal in the voice signal.
Preferably, it is described will by frequency compensation treated the voice signal carries out echo cancellor the step of after also
Include:
Equilibrium treatment is carried out to the voice signal after echo cancellor according to default balance parameters；
The voice signal Jing Guo equilibrium treatment is carried out frequency compensation to handle, to obtain in the voice signal
Echo signal.
Preferably, the voice signal by after echo cancellor carries out frequency compensation and handles, to obtain
After the step of stating the echo signal in voice signal further include:
ARRAY PROCESSING and/or voice recognition processing are carried out to the echo signal.
Preferably, the echo cancel method of the audio frequency apparatus further include:
When carrying out voice recognition processing to the echo signal, judge to wake up in the echo signal with the presence or absence of default
Instruction；
If it exists, then it controls the audio frequency apparatus and is in wake-up states.
Preferably, when the microphone is microphone array, before the audio frequency apparatus is in wake-up states, the Mike
The microphone of one in wind array or predetermined quantity is in running order.
Preferably, it is described if it exists, then controlling the step of audio frequency apparatus is in wake-up states includes:
It controls the microphone in the microphone array in off working state and is switched to working condition.
To achieve the above object, the present invention also provides a kind of audio frequency apparatus, the audio frequency apparatus includes processor and deposits
Store up the echo cancellor program for the audio frequency apparatus that can be run in the processor and on the processor, wherein the audio
The echo cancellor program of equipment realizes the step of the echo cancel method of audio frequency apparatus as described above when being executed by the processor
Suddenly.
To achieve the above object, the present invention also provides a kind of computer readable storage medium, the computer-readable storages
The echo cancellor program of audio frequency apparatus is stored on medium, the echo cancellor program of the audio frequency apparatus is executed by processor realization
The step of echo cancel method of audio frequency apparatus as described above.
Echo cancel method, audio frequency apparatus and the computer readable storage medium of audio frequency apparatus provided by the invention, pass through
The received voice signal of microphone of the audio frequency apparatus is obtained, frequency compensation processing then is carried out to the voice signal, then
Will by frequency compensation, treated that the voice signal carries out echo cancellor, finally by the sound after echo cancellor
Signal carries out frequency compensation and handles, to obtain the echo signal in the voice signal.In this way, can be in audio frequency apparatus
When the received voice signal of microphone is distorted, the influence to echo cancellor is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the audio frequency apparatus for the hardware running environment that the embodiment of the present invention is related to；
Fig. 2 is the flow diagram of the echo cancel method first embodiment of audio frequency apparatus of the present invention；
Fig. 3 is the refinement flow diagram of step S2 in Fig. 2；
Fig. 4 is the refinement flow diagram of step S4 in Fig. 2；
Fig. 5 is the flow diagram of the echo cancel method second embodiment of audio frequency apparatus of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
As shown in Figure 1, audio frequency apparatus of the invention includes: processor 1001, such as CPU, user interface 1002, memory
1003, communication bus 1004, loudspeaker 1005 and microphone 1006.Wherein, communication bus 1004 for realizing these components it
Between connection communication.User interface 1002 may include input unit.Loudspeaker 1005 are for playing voice signal, microphone 1006
For receiving the signal of loudspeaker sending and the voice signal etc. of user's triggering.
Memory 1003 can be high speed RAM memory, be also possible to stable memory (non-volatile
), such as magnetic disk storage memory.Memory 1003 optionally can also be the storage dress independently of aforementioned processor 1001
It sets.
It will be understood by those skilled in the art that audio frequency apparatus shown in Fig. 1 does not constitute the restriction to audio frequency apparatus, it can
To include perhaps combining certain components or different component layouts than illustrating more or fewer components.
As may include operating system, network communication module, use in a kind of memory 1003 of computer storage medium
The echo cancellor program of family interface module and audio frequency apparatus.
User interface 1002 is mainly used for reception user and passes through input unit input instruction triggers user instruction；Processor
1001 for calling the echo cancellor program of the audio frequency apparatus stored in memory 1003, and executes following operation:
Obtain the received voice signal of microphone of the audio frequency apparatus；
Frequency compensation processing is carried out to the voice signal；
It will treated that the voice signal carries out echo cancellor by frequency compensation；
The voice signal after echo cancellor is carried out frequency compensation to handle, to obtain in the voice signal
Echo signal.
Further, processor 1001 can call the echo cancellor program of the audio frequency apparatus stored in memory 1003,
Also execute following operation:
Obtain the loudspeaker into the microphone array frequency response of each microphone and the loudspeaker to preset reference
The default frequency response of microphone；
Calculate the difference between the default frequency response and each frequency response；
According to the difference, received voice signal is corresponded to each microphone and carries out frequency compensation.
Further, processor 1001 can call the echo cancellor program of the audio frequency apparatus stored in memory 1003,
Also execute following operation:
Take the negative value of the difference；
According to the negative value of the difference, frequency compensation is carried out to the voice signal after echo cancellor and is handled,
To obtain the echo signal in the voice signal.
Further, processor 1001 can call the echo cancellor program of the audio frequency apparatus stored in memory 1003,
Also execute following operation:
Equilibrium treatment is carried out to the voice signal after echo cancellor according to default balance parameters；
The voice signal Jing Guo equilibrium treatment is carried out frequency compensation to handle, to obtain in the voice signal
Echo signal.
Further, processor 1001 can call the echo cancellor program of the audio frequency apparatus stored in memory 1003,
Also execute following operation:
ARRAY PROCESSING and/or voice recognition processing are carried out to the echo signal.
Further, processor 1001 can call the echo cancellor program of the audio frequency apparatus stored in memory 1003,
Also execute following operation:
When carrying out voice recognition processing to the echo signal, judge to wake up in the echo signal with the presence or absence of default
Instruction；
If it exists, then it controls the audio frequency apparatus and is in wake-up states.
Further, processor 1001 can call the echo cancellor program of the audio frequency apparatus stored in memory 1003,
Also execute following operation:
When the microphone is microphone array, before the audio frequency apparatus is in wake-up states, the microphone array
In one or predetermined quantity microphone it is in running order.
Further, processor 1001 can call the echo cancellor program of the audio frequency apparatus stored in memory 1003,
Also execute following operation:
It controls the microphone in the microphone array in off working state and is switched to working condition.
Referring to Fig. 2, in the first embodiment, the present invention provides a kind of echo cancel method of audio frequency apparatus, including following
Step:
Step S1, the received voice signal of microphone of the audio frequency apparatus is obtained；
In the present embodiment, the audio frequency apparatus can be intelligent sound box, be also possible to mobile phone etc. with radio reception and playback function
The playback equipment of energy.The audio frequency apparatus includes microphone and loudspeaker, wherein the microphone can be an individual Mike
Wind, or the microphone array of multiple microphone compositions.The received voice signal of microphone includes the loudspeaker hair
The voice signal etc. of signal and user's triggering out.Certainly, the voice signal can also include the audio frequency apparatus itself
The signals such as the noise of generation and the noise of the audio frequency apparatus local environment.
It is understood that when the microphone be microphone array when, can make a reservation for one or more microphones in real time or
Timing acquiring voice signal when the audio frequency apparatus, which is waken up the accurate reception user speech of needs, to be instructed, then is switched in time
All microphones are in working condition, can reduce operand and power consumption of the audio frequency apparatus in speech recognition process；
It is of course also possible to carry out the acquisition of voice signal by all microphones in the microphone array.
Step S2, frequency compensation processing is carried out to the voice signal；
In the present embodiment, it is assumed that the microphone generates distortion when frequency is 5000Hz, then can be by this
Frequency response carries out frequency compensation processing, increases the fundamental frequency response at this, to reduce distortion, to reduce distortion to the shadow of echo cancellor
It rings.
It step S3, will treated that the voice signal carries out echo cancellor by frequency compensation；
In the present embodiment, echo cancellation process can be carried out using adaptive-filtering mode at microphone；It can also adopt
Echo cancellor is carried out with acoustic echo control algolithm.Certainly, the present embodiment does not limit what specific progress echo cancellor was taken
Specific algorithm, but can reasonably select according to actual needs.The present embodiment can also use wave before carrying out echo cancellor
The elimination of the progress noise such as beam shaping, noise suppressed, dereverberation and Nonlinear Processing.
Step S4, the voice signal after echo cancellor is carried out frequency compensation to handle, to obtain the sound
Echo signal in sound signal.
In the present embodiment, when to by frequency compensation, treated after the voice signal carries out echo cancellor, it can
The signal etc. that the loudspeaker in the voice signal issue is filtered, at this point, by the voice signal after echo cancellor
It carries out frequency compensation to handle, can believe to avoid voice of the said frequencies compensating operation to user's triggering in the voice signal
Number occur influence and interference.
The echo cancel method of audio frequency apparatus provided by the invention, it is received by the microphone for obtaining the audio frequency apparatus
Then voice signal carries out frequency compensation processing to the voice signal, then will be by frequency compensation treated the sound
Signal carries out echo cancellor, and the voice signal after echo cancellor is finally carried out frequency compensation and is handled, thus
To the echo signal in the voice signal.In this way, can be distorted in the received voice signal of microphone of audio frequency apparatus
When, reduce the influence to echo cancellor.
Referring to Fig. 3, in a second embodiment, it is based on first embodiment, the step S2 includes:
Step S21, the loudspeaker frequency response of each microphone and loudspeaker into the microphone array are obtained to arrive
The default frequency response of preset reference microphone；
In the present embodiment, the microphone is microphone array, includes N number of microphone, detection in the microphone array
The loudspeaker arrive the frequency response P of each microphone of the audio frequency apparatus respectively1、P2、P3···PN.Wherein, the preset reference
Microphone is the microphone of peripheral hardware, and the default frequency response is the data measured by default experiment.
Step S22, the difference between the default frequency response and each frequency response is calculated；
Step S23, according to the difference, received voice signal is corresponded to each microphone and carries out frequency compensation.
In the present embodiment, the default frequency response P and each frequency response P is calculatedNBetween difference be P-PN, then basis
The difference P-P being calculatedN, received voice signal is corresponded to each microphone and carries out frequency compensation, namely is each
A microphone corresponds to received voice signal, respectively adds the corresponding difference, can carry out corresponding frequency compensation.
The present embodiment is by carrying out at frequency compensation the received voice signal of microphone each in the microphone array
Reason can reduce the microphone in certain frequency ranges and generate distortion effect brought by valley point.
It is understood that when the microphone only has one frequency compensation can also be carried out using such scheme.This
When, corresponding N=1.Concrete scheme is same as above, and details are not described herein again.
Referring to Fig. 4, in the third embodiment, it is based on second embodiment, the step S4 includes:
Step S41, the negative value of the difference is taken；
Step S42, according to the negative value of the difference, frequency is carried out to the voice signal after echo cancellor and is mended
Processing is repaid, to obtain the echo signal in the voice signal.
In the present embodiment, the negative value of the difference, i.e. P are takenN- P, then according to the negative value P of the differenceN- P, to passing through back
The voice signal after sound is eliminated carries out frequency compensation and handles namely the sound of each microphone after echo cancellor
Sound signal respectively adds the negative value of the corresponding difference, can be removed corresponding frequency compensation.In this way, can be to avoid
Said frequencies compensating operation occurs to influence and interfere on the voice signal of user's triggering in the voice signal.
It is understood that when the microphone only has one frequency compensation can also be carried out using such scheme.
At this point, corresponding N=1.Concrete scheme is same as above, and details are not described herein again.
Referring to Fig. 5, in the fourth embodiment, it is based on any of the above-described embodiment, after the step S3 further include:
Step S5, equilibrium treatment is carried out to the voice signal after echo cancellor according to default balance parameters；
Step S6, the voice signal Jing Guo equilibrium treatment is carried out frequency compensation to handle, to obtain the sound
Echo signal in signal.
In the present embodiment, the frequency of adjustment and the gain factor of frequency dependence, by default balance parameters to by echo
The voice signal after elimination carries out equilibrium treatment equilibrium treatment, can be distorted to avoid the frequency of occurrences in the echo signal.
The present embodiment can carry out at equilibrium the voice signal after echo cancellor automatically according to default balance parameters
Reason, can also provide a user can operation interface, can specifically be shown by the application interface of mobile terminal such as mobile phone to user
Adjustable parameter interface allows user to carry out personal settings according to the hobby of oneself.
Based on any of the above-described embodiment, when obtaining the echo signal, the echo signal can be carried out at array
Reason and/or voice recognition processing.Specifically, the ARRAY PROCESSING is mainly used for through the received voice signal of multiple microphones,
Determine the direction and position of sound.The voice recognition processing is mainly used for identifying the instruction of user.It is understood that in head
When the secondary instruction for recognizing user, it can control the audio frequency apparatus from dormant state or standby mode and be switched to wake-up states,
As " the small G for receiving user's triggering！Small G！" instruction when, then be waken up；When the instruction for again identifying that user such as " plays sound
It is happy " when, directly according to the instruction execution corresponding operation of user.
Specifically, to the echo signal carry out voice recognition processing when, it can be determined that in the echo signal whether
There are default wake up instructions such as " small G！Small G！", and if it exists, it then controls the audio frequency apparatus and is in wake-up states.At this point, if institute
Stating microphone is microphone array, then can specify in the microphone array before the audio frequency apparatus is in wake-up states
One or predetermined quantity microphone it is in running order, other microphones are in suspend mode or standby mode；And in control institute
When stating audio frequency apparatus and being in wake-up states, controls the microphone in the microphone array in off working state and be switched to work
State, even if also all microphones in the microphone array are in working condition.In this way, can not only reduce the audio
Equipment is in the speech recognition operand before wake-up states and power consumption, can also more accurately know after audio frequency apparatus wake-up
The instruction of other user.
The present invention also provides a kind of audio frequency apparatus, the audio frequency apparatus includes processor and is stored in the processor
And the echo cancellor program for the audio frequency apparatus that can be run on the processor, wherein the echo cancellor journey of the audio frequency apparatus
Sequence realizes the step of echo cancel method of audio frequency apparatus as described above when being executed by the processor.
The present invention also provides a kind of computer readable storage mediums, which is characterized in that the computer readable storage medium
On be stored with the echo cancellor program of audio frequency apparatus, it is as above that the echo cancellor program of the audio frequency apparatus is executed by processor realization
The step of echo cancel method of the audio frequency apparatus.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, controlled terminal or network equipment etc.) execute method described in each embodiment of the present invention.
Claims (10)
1. a kind of echo cancel method of audio frequency apparatus, which is characterized in that the described method includes:
Obtain the received voice signal of microphone of the audio frequency apparatus；
Frequency compensation processing is carried out to the voice signal；
It will treated that the voice signal carries out echo cancellor by frequency compensation；
The voice signal after echo cancellor is carried out frequency compensation to handle, to obtain the mesh in the voice signal
Mark signal.
2. the echo cancel method of audio frequency apparatus as described in claim 1, which is characterized in that the microphone is microphone array
Column, the audio frequency apparatus also have a loudspeaker, and described the step of carrying out frequency compensation processing to the voice signal includes:
Obtain the loudspeaker into the microphone array frequency response of each microphone and the loudspeaker to preset reference Mike
The default frequency response of wind；
Calculate the difference between the default frequency response and each frequency response；
According to the difference, received voice signal is corresponded to each microphone and carries out frequency compensation.
3. the echo cancel method of audio frequency apparatus as claimed in claim 2, which is characterized in that it is described will be after echo cancellor
The voice signal carry out frequency compensation and handle, to include: the step of obtaining the echo signal in the voice signal
Take the negative value of the difference；
According to the negative value of the difference, frequency compensation is carried out to the voice signal after echo cancellor and is handled, with
To the echo signal in the voice signal.
4. the echo cancel method of audio frequency apparatus as described in claim 1, which is characterized in that described to pass through at frequency compensation
After the step of voice signal after reason carries out echo cancellor further include:
Equilibrium treatment is carried out to the voice signal after echo cancellor according to default balance parameters；
The voice signal Jing Guo equilibrium treatment is carried out frequency compensation to handle, to obtain the target in the voice signal
Signal.
5. the echo cancel method of audio frequency apparatus according to any one of claims 1 to 4, which is characterized in that it is described will be through
The voice signal after crossing echo cancellor carries out frequency compensation and handles, to obtain the echo signal in the voice signal
After step further include:
ARRAY PROCESSING and/or voice recognition processing are carried out to the echo signal.
6. the echo cancel method of audio frequency apparatus as described in claim 1, which is characterized in that the echo of the audio frequency apparatus disappears
Except method further include:
When carrying out voice recognition processing to the echo signal, judge to refer in the echo signal with the presence or absence of default wake-up
It enables；
If it exists, then it controls the audio frequency apparatus and is in wake-up states.
7. the echo cancel method of audio frequency apparatus as claimed in claim 6, which is characterized in that the microphone be microphone
When array, before the audio frequency apparatus is in wake-up states, at one in the microphone array or the microphone of predetermined quantity
In working condition.
8. the echo cancel method of audio frequency apparatus as claimed in claim 7, which is characterized in that it is described if it exists, then control institute
Stating the step of audio frequency apparatus is in wake-up states includes:
It controls the microphone in the microphone array in off working state and is switched to working condition.
9. a kind of audio frequency apparatus, which is characterized in that the audio frequency apparatus includes processor and is stored in the processor simultaneously
The echo cancellor program for the audio frequency apparatus that can be run on the processor, wherein the echo cancellor program of the audio frequency apparatus
The echo cancel method of audio frequency apparatus described in any item of the claim 1 to 8 as above is realized when being executed by the processor
Step.
10. a kind of computer readable storage medium, which is characterized in that be stored with audio on the computer readable storage medium and set
Standby echo cancellor program, the echo cancellor program of the audio frequency apparatus are executed by processor realization as appointed in claim 1 to 8
The step of echo cancel method of audio frequency apparatus described in one.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110234043A (en) * | 2019-05-31 | 2019-09-13 | 歌尔科技有限公司 | Audio signal processing method, device and equipment based on microphone array |
| CN110310654A (en) * | 2019-07-26 | 2019-10-08 | 歌尔科技有限公司 | Echo cancel method and device, electronic equipment, readable storage medium storing program for executing |
| WO2023098237A1 (en) * | 2021-11-30 | 2023-06-08 | 歌尔股份有限公司 | Head-mounted device, and far-field silencing method, apparatus and system therefor |
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| CN107205201A (en) * | 2017-06-06 | 2017-09-26 | 歌尔科技有限公司 | Audio signal control method and device |
| CN107577449A (en) * | 2017-09-04 | 2018-01-12 | 百度在线网络技术（北京）有限公司 | Wake up pick-up method, device, equipment and the storage medium of voice |
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| CN110234043A (en) * | 2019-05-31 | 2019-09-13 | 歌尔科技有限公司 | Audio signal processing method, device and equipment based on microphone array |
| CN110310654A (en) * | 2019-07-26 | 2019-10-08 | 歌尔科技有限公司 | Echo cancel method and device, electronic equipment, readable storage medium storing program for executing |
| WO2023098237A1 (en) * | 2021-11-30 | 2023-06-08 | 歌尔股份有限公司 | Head-mounted device, and far-field silencing method, apparatus and system therefor |
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