CN110265050A - AEC audio control system and its clock machinery of consultation - Google Patents
AEC audio control system and its clock machinery of consultation Download PDFInfo
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques 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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques 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
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Abstract
The invention discloses a kind of AEC audio control system and its clock machineries of consultation, the described method comprises the following steps: determining the data feedback channel for needing to enable between application processor and echo cancellation module；Wherein, the data feedback channel between application processor and echo cancellation module includes a main channel and several subchannels；Detect the working condition in several channels among main channel and subchannel；The working condition in several channels among data feedback channel and the main channel and subchannel enabled as needed, determines master slave mode；The clock module and notice echo cancellation module for configuring application processor according to master slave mode are according to the master slave mode configurable clock generator mode.The present invention can be suitable among the AEC audio frequency control scheme of more master-slave designations compared with the existing technology, thus can configure master slave mode more flexiblely in practical applications, have wider array of application scenarios.The present invention can be widely applied to AEC audio frequency control technical field.
Description
Technical field
The present invention relates to AEC audio frequency control technical field, especially a kind of AEC audio control system and its clock negotiation side
Method.
Background technique
AEC (Automatic Echo Cancellation, echo cancellor) audio control system generally uses principal and subordinate at present
Mode, and master-slave relationship is that system determines that when designing, wherein the first situation is defined in design there are two types of situation
AP (Application Processor, application processor) is host, and echo cancellation module is slave, during the work time
Clock is provided from AP to echo cancellation module；Second situation is that in design, clear AP is slave, and echo cancellation module is
Host provides clock from echo cancellation module to AP during the work time.
But current technology scheme has determined master-slave relationship in design, it is meant that some there are more principals and subordinates to set
It counts in desired audio system, then cannot switch master-slave relationship, cause audio system unavailable, to limit the prior art
Application.
Summary of the invention
In order to solve the above technical problems, it is an object of the invention to: a kind of AEC audio control system and its clock association are provided
Quotient's method is led with realizing that the clock of AEC audio control system is negotiated so that AEC audio control system can be useful in more
From the scheme of design.
The first aspect of the embodiment of the present invention provides:
A kind of clock machinery of consultation of AEC audio control system, comprising the following steps:
Determine the data feedback channel for needing to enable between application processor and echo cancellation module；Wherein, application processor with
Data feedback channel between echo cancellation module includes a main channel and several subchannels；
Detect the working condition in several channels among main channel and subchannel；
The work shape in several channels among data feedback channel and the main channel and subchannel enabled as needed
State determines master slave mode；
The clock module and notice echo cancellation module for configuring application processor according to master slave mode are according to the principal and subordinate
Pattern configurations clock module.
Further, several among the data feedback channel enabled as needed and the main channel and subchannel are logical
The working condition in road, determines master slave mode, specifically includes:
After determining that main channel needs to enable, master slave mode is determined according to the working condition of subchannel.
Further, several among the data feedback channel enabled as needed and the main channel and subchannel are logical
The working condition in road, determines master slave mode, specifically includes:
Determining that main channel do not need to enable, and after determining that at least one subchannel needs to enable, according to the work of main channel
Master slave mode is determined as state.
Further, according to master slave mode configure application processor clock module and notice echo cancellation module according to
It is further comprising the steps of after the master slave mode configurable clock generator mode:
Determine the data feedback channel for needing to exit business；
Detect the new working condition in several channels among main channel and subchannel；
The new work in several channels among the data feedback channel and main channel and subchannel of business is exited as needed
Make state, closes or maintain clock.
Further, several among the data feedback channel and main channel and subchannel for exiting business as needed are logical
The new working condition in road is closed or is maintained clock, specifically includes:
After determining that main channel needs to exit business, according to the new working condition of subchannel, clock is closed or maintained.
Further, several among the data feedback channel and main channel and subchannel for exiting business as needed are logical
The new working condition in road is closed or is maintained clock, specifically includes:
Determining that main channel do not need to exit business, and after determining that at least one subchannel needs to exit business, according to master
Clock is closed or maintained to the new working condition in channel and subchannel.
The second aspect of the embodiment of the present invention provides:
A kind of AEC audio control system, including application processor and echo cancellation module, the application processor and echo
Data feedback channel between cancellation module includes a main channel and several subchannels；
The data feedback channel that the application processor is enabled for determining needs；Then it detects among main channel and subchannel
The working condition in several channels；And it is several among the data feedback channel and the main channel and subchannel enabled as needed
The working condition in a channel, determines master slave mode；The clock module of application processor is then configured according to master slave mode and is led to
Know that echo cancellation module enters the master slave mode；
Echo cancellation module is matched for carrying out echo cancellation process, and according to the master slave mode that application processor determines
Set clock
Mode.
Further, several among the data feedback channel enabled as needed and the main channel and subchannel are logical
The working condition in road, determines master slave mode, specifically includes:
After determining that main channel needs to enable, master slave mode is determined according to the working condition of subchannel.
Further, several among the data feedback channel enabled as needed and the main channel and subchannel are logical
The working condition in road, determines master slave mode, specifically includes:
Determining that main channel do not need to enable, and after determining that at least one subchannel needs to enable, according to the work of main channel
Master slave mode is determined as state.
Further, the application processor, in the clock module and notice for configuring application processor according to master slave mode
After echo cancellation module enters the master slave mode, it is also used to:
Determine the data feedback channel for needing to exit business；
Detect the new working condition in several channels among main channel and subchannel；
The new work in several channels among the data feedback channel and main channel and subchannel of business is exited as needed
Make state, closes or maintain clock.
The beneficial effects of the present invention are: according to the work shape of the data feedback channel between application processor and echo cancellation module
State and need data feedback channel to be used, carry out clock negotiation, can in different application scenarios, switch application processor and
Master-slave relationship between echo cancellation module, to change the provider of clock, the present invention can be applicable in compared with the existing technology
Among the AEC audio frequency control scheme of more master-slave designations, thus master slave mode can be configured more flexiblely in practical applications,
With wider array of application scenarios.
Detailed description of the invention
Fig. 1 is a kind of module frame chart of the AEC audio control system of specific embodiment of the present invention；
Fig. 2 is a kind of key step of the clock machinery of consultation of the AEC audio control system of specific embodiment of the present invention
Flow chart；
Fig. 3 is a kind of specific steps of the clock machinery of consultation of the AEC audio control system of specific embodiment of the present invention
Flow chart；
Fig. 4 is a kind of destruction step of the clock machinery of consultation of the AEC audio control system of specific embodiment of the present invention
The flow chart of key step；
Fig. 5 is a kind of destruction step of the clock machinery of consultation of the AEC audio control system of specific embodiment of the present invention
The flow chart of specific steps.
Specific embodiment
The present invention is further detailed with specific embodiment with reference to the accompanying drawings of the specification.
Before being illustrated to the clock machinery of consultation in the present embodiment, first to the AEC audio control system
Groundwork process is illustrated.
Referring to Fig.1, AEC audio control system in the present embodiment include application processor 100, codec 200 with
And echo cancellation module 300 is constituted, the application processor 100 is also referred to as AP, and echo cancellation module 300 can also be claimed
Make AEC module.
Wherein, echo cancellation module includes digital processing unit 301, buffer 302, clock interface 303, input channel 304
With reference channel signal selector 305.
AEC audio control system in the present embodiment at work, the digital processing unit in echo cancellation module 300
301, audio to be processed can be obtained from input channel 304.The audio to be processed can be to be obtained from input equipment, example
Such as, it obtains from microphone, can also be answered from the components such as buffer by data feedback channel after the digitized audio frequency to be processed
It is read with processor.
Subsequent digital processing unit 301 obtains number from the selected reference channel signal of reference channel signal selector 305
The processing such as echo cancellor and noise suppressed is carried out to audio to be processed according to as reference signal, and according to the reference signal,
It can be realized using the prior art as algorithm used when carrying out echo cancellation process and noise suppressed.It passes through under normal circumstances
Audio after crossing the echo cancellation process of digital processing unit 301 can be output to buffer 302 or be directly output to using place
Manage device 100.As for buffer 302, can store a variety of data, including but not limited to reference signal, audio to be processed and
Audio after echo cancellation process.The reference channel signal selector 305 can select to refer to according to preset rules
Signal path.For example, setting reference channel signal selector 305 when the equipment that input channel 304 is connect is microphone, select
First reference channel signal sets equipment that reference channel signal selector 305 is connect in input channel 304 as other equipment
When, select the second reference channel signal.Certainly, reference channel signal selector 305 can also be according to the control of application processor 100
Signal behavior reference channel signal processed, for example, application processor 100 sends control signal to reference channel signal selector 305,
Control reference channel signal selector 305 selects different reference channel signals as derived reference signal.
And about the reference channel signal, as shown in Figure 1, it can be provided by codec 200, and codec
200 work is several down going channel (the also referred to as downlink between codec 200 and application processor 100
Path signal to be decoded) is obtained, decoded signal is then treated again and is decoded rendering processing, ultimately becoming analog signal is in
Now give user.Echo cancellation module 300 is used for the reference signal used when carrying out echo cancellation process to audio to be processed,
It is to select to obtain among several down going channels.For example, reference channel signal selector 305 can choose downlink
Path 1 also can choose downlink path N conduct and be input to number as the reference signal for being input to digital processing unit 301
The reference signal of word processing device 301.
Clock interface 303 in the echo cancellation module 300, for providing the work clock of echo cancellation module,
When echo cancellation module 300 is as host, clock is provided by clock interface 303.
About codec 200, it is mainly used for application processor 100 passing through the letter that downlink path is issued
Number it is decoded the processing such as rendering.For example, codec 200 can be the D/A conversion for converting digital signals into analog signal
Device.In some embodiments, the function of the codec is realized by application processor or the codec is application
A part of processor.
And application processor 100, when obtaining data from echo cancellation module 300, application processor 100 is likely to require
A variety of different data are obtained, for example, it is desired to obtain audio to be processed and the audio after echo cancellation process simultaneously.This
When, application processor 100 needs the data feedback channel (also referred to as uplink path) by it between echo cancellation module 300
To realize.Under normal circumstances, data feedback channel can be using first channel as main channel, and main channel is mainly used for transmission and passes through back
Audio after sound Processing for removing, if application processor 100 also needs to obtain other data from echo cancellation module 300, such as
Audio to be processed can then be uploaded by the 2nd to N data feedback channel, be referred to as subchannel for the 2nd to N data feedback channel here.
And application processor 100 is when obtaining data from echo cancellation module 300, the side among the two needs for other side
Clock is provided, in the prior art, the master-slave relationship of the two is pre-designed, that is provides a side and the receiving of clock
One side of clock is cannot mutually to switch in system operation, so as to cause in the application scenarios of some more principals and subordinates, is showed
There is technology to be unable to satisfy.
Based on this, referring to Fig. 2, the present embodiment provides a kind of clock machinery of consultation for aforementioned AEC audio control system,
It is applied among application processor, so that when the master-slave relationship between application processor and echo cancellation module can pass through
The mode that clock is negotiated is determined, and different master-slave modes is realized under different application scenarios.
The method of the present embodiment includes step S201~S204.
S201, the data feedback channel for needing to enable between application processor and echo cancellation module is determined.
In this step, the instruction that application processor can be issued according to user or host computer, determines this business
The middle data feedback channel for needing to use.For example, this business needs while obtaining the audio by echo cancellation process and original sound
Frequently.So need to use main channel and a subchannel.Certainly, this business is also possible to only need to obtain by echo cancellor
The audio of processing, therefore only need to enable main channel.It, can be with stepwise affirmation, example when confirming which channel needs to enable
If this step first confirms whether main channel needs to enable, determining that main channel needs to enable or do not enable and meet some conditions
When, just it is determined to whether other subchannels need to enable.
The working condition in several channels among S202, detection main channel and subchannel.
In this step, by the working condition of detection main channel and subchannel, can determine has application processor at present
Which data feedback channel is working, and there are many kinds of the methods detected, for example, application processor detects whether relevant channel has
Data upload.Or when being about scheduled on the work of certain data feedback channel between application processor and echo cancellation module, echo cancellation module
The level of certain pins can be changed indicate the data feedback channel working condition or echo cancellation module can be by certain registers
Set indicates that the data feedback channel is working.
Similarly, it when detecting the working condition in several channels among main channel and subchannel, can also carry out step by step
, for example, in some embodiments, first having checked the working condition of main channel, and go to examine meeting setting condition Shi Caihui
Survey the working condition of subchannel.And the working condition of subchannel simultaneously has to whole detections, can be individual detections, such as
One shares 5 subchannels, and in some embodiments, only detect the first two subchannel.
And in the present embodiment, the sequence between step S201 and step S202 is not strict sequence, the two
It can replace or intersect progress.For example, can first detect whether main channel needs to enable, after meeting certain condition,
The working condition for detecting main channel again, after meeting other conditions, then detect secondary channel whether need enable or whether
It is working.
The work in several channels among S203, the data feedback channel enabled as needed and the main channel and subchannel
Make state, determines master slave mode.
In this step, several among the data feedback channel and the main channel and subchannel enabled as needed are logical
The working condition in road can detecte different scene compositions, then determine application processor and echo according to different scenes
Master slave mode between cancellation module.
S204, the clock module that application processor is configured according to master slave mode and notice echo cancellation module are according to described
Master slave mode configurable clock generator mode.
In application processor after determining master slave mode, it is notified that the master slave mode that echo cancellation module determines, so as to
Clock module is respectively configured in both sides.For example, application processor determines itself as host, echo cancellation module is slave, then answers
The clock of itself is supplied to echo cancellation module with processor.After receiving the master slave mode that application processor determines, echo
Cancellation module, which is learnt, itself is configured as slave, then oneself does not generate clock, but the clock that application processor is provided as
Clock.
Application processor can be notified when notifying echo cancellation module by the I2C order made an appointment to realize
Journey can also realize notification procedure by sending a level signal to echo cancellation module.
Among the negotiable system of clock, for communicating pair before communication starts, general both sides can be defaulted as slave
State.The communication refers to that communicating pair is in the state being just powered on and initialized or both sides are over before starting before
Communication state.
And among the present embodiment, application processor and echo cancellation module be in front of communication starts default from
Machine state.But in practical applications, application processor is when negotiating clock, it is possible to part data feedback channel is currently being used,
And and not all data feedback channel all in sign off state.For example, the audio by echo cancellation process has passed through master
Channel is uploaded to application processor, but subchannel is still sending audio to be processed.At this point, main channel has logged out industry
It is engaged in, but the clock of both sides is not off.If application processor receives the new request of user again, no matter before
Business whether be fully completed, require to renegotiate clock.But in the case where master-slave relationship has determined, in order not to beat
Business before unrest, clock can use master-slave mode currently in use when negotiating.It is expected that it is not finished in business
Preceding change clock will lead to the business being carrying out and execute failure.Data feedback channel that thus combination in need needs to enable and each
The working condition of a data feedback channel carries out clock negotiation.
Referring to Fig. 3, as preferred embodiment, the step S203 is specifically included:
After determining that main channel needs to enable, master slave mode is determined according to the working condition of subchannel.
After determining that main channel needs starting in this business, first the working condition of subchannel is detected, at this
In embodiment, as long as there is any one subchannel in running order, so that it may think that echo cancellation module has been able to boot
Clock, at this time, it is specified that using echo cancellation module as host, and application processor is as slave.The clock of communication uses back
Clock caused by clock interface inside sound cancellation module.And if all subchannels are not used, it uses and answers
Use processor as host and master-slave relationship of the echo cancellation module as slave.
Referring to Fig. 3, as preferred embodiment, the step S203 is specifically included:
Determining that main channel do not need to enable, and after determining that at least one subchannel needs to enable, according to the work of main channel
Master slave mode is determined as state.
In the present embodiment, it when formerly enabling main channel, can use using application processor as host, echo cancellation module
Master-slave mode as slave.Therefore, if in some business, until needing to enable subchannel, need to detect current main channel
Whether working, if main channel is working, in this case, is illustrating to have determined that and be made with application processor
For the provider of clock, and recipient of the echo cancellation module as clock.And if main channel is not working, it notifies back
Sound cancellation module provides clock, that is, allows echo cancellation module as host, by application processor as slave.
In the following, being illustrated for the overall plan in Fig. 3, when starting, application processor and echo cancellation module are equal
In slave status.After application processor receives service order, first, it is determined that in this business, if need to start
Main channel.If having detected whether that at least one subchannel is working in the case where main channel needs to start, if so,
Determine that master-slave relationship be echo cancellation module is host, application processor is slave；If it is not, determining that master-slave relationship is
Echo cancellation module is slave, and application processor is host.
If being first confirmed whether there is subchannel to need to enable, if subchannel in the case where main channel does not need starting
It does not need to enable, then terminates to negotiate yet.If subchannel needs to enable, detect whether main channel is working, if main channel
Working, illustrating that master slave mode has determined that, be exactly using application processor as host and echo cancellation module is as slave.
If main channel is not working, at this time if determine using application processor as slave and echo cancellation module as host.
After negotiation, if it is determined that master-slave relationship, then when being carried out by application processor notice echo cancellation module
The configuration of clock mode.Meanwhile application processor is also according to determining master-slave relationship come configurable clock generator mode.
After clock is negotiated, the master-slave relationship of both sides can be confirmed.When application processor and echo cancellation module
Communication service complete after, both sides can revert to default mode, i.e. both sides are defaulted as slave status.
However, the business to be processed as needed for AEC audio control system may be to intersect to carry out, business and business it
Between deadline be also possible to have differences, therefore, it is possible to which another business is still not yet in a service ending
Terminate.For example, AEC audio control system is simultaneously in processing sound-recording business and the data in crawl echo cancellation module buffer
Task, wherein sound-recording business occupies main channel, and the business for grabbing data in echo cancellation module buffer occupies wherein one
A subchannel, and service ending of the task prior to data grabber of recording directly close clock if after sound-recording business,
Will lead to data grabber business leads to service disconnection since clock signal is lost.Therefore after clock negotiation, it is also necessary to related
Escape mechanism save system power dissipation so that system, which can be in due course, closes clock.
It further include destroying step after the step S204 as preferred embodiment referring to Fig. 4, the destruction step
Suddenly include step S401~S403:
S401, the data feedback channel for needing to exit business is determined.
In the present embodiment, the data feedback channel for exiting business may be main channel either subchannel, it is also possible to be more
A channel is exited simultaneously.After channel is exited, it can stop working.If necessary to enabling again, need by application processor Lai
It determines.
The new working condition in several channels among S402, detection main channel and subchannel.
When detecting, detection ordering can be carried out according to the sequence made an appointment, such as first detect the work shape of main channel
Then state successively detects the working condition of subchannel again.And in the present embodiment, it can choose and detecting a subchannel just
At work, stop detection, just to reduce processing delay and save computing resource.
S403, the new of several channels among the data feedback channel and main channel and subchannel of business is exited as needed
Working condition, close or maintain clock.
This step combines step S401 to determine that the data feedback channel for needing to exit business and step S402 are detected each logical
The new working condition in road, it can be determined that go out current application scenarios, to determine whether to close clock, and closing
It is to close the clock or close the clock that echo cancellation module provides that application processor provides when clock.Certainly, if it is pass
What is closed is the clock that application processor provides, and does not need notice echo cancellation module, and application processor can be closed directly.And
If what is closed is the clock that echo cancellation module provides, needs application processor to close echo cancellation module in determination and mention
After the clock of confession, echo cancellation module is notified.It is similar with the notice method of echo cancellation module master slave mode, I2C can be passed through
Notification procedure is realized in order or level signal etc..
The present embodiment can close clock in suitable occasion, to reduce the power consumption of system.
Referring to Fig. 5, as preferred embodiment, the step S403 is specifically included:
After determining that main channel needs to exit business, according to the new working condition of subchannel, clock is closed or maintained.
In the present embodiment if it is determined that main channel needs to exit business, it means that if there is subchannel just in work
Make, no matter it is currently used be which kind of master slave mode, clock shall not be closed, otherwise will affect the business of subchannel.Therefore,
The present embodiment first determines the working condition of subchannel after determining that main channel needs to exit business, if none of time
Channel is being currently at working condition, then can directly close clock.And in the present embodiment, when business is exited in main channel,
If worked without subchannel, the clock of closing is clock provided by application processor.
Referring to Fig. 5, as preferred embodiment, the step S403 is specifically included:
Determining that main channel do not need to exit business, and after determining that at least one subchannel needs to exit business, according to master
Clock is closed or maintained to the new working condition in channel and subchannel.
In the present embodiment, determine that main channel does not need to exit business, then illustrating that main channel may not open natively
With or main channel currently also in processing business, if it is main channel just in processing business, then no matter what master-slave relationship is at this time
Kind state, should not close clock.And if main channel is to need to confirm other subchannels in not having in harness state
Whether (i.e. except when subchannel) other than the preceding channel for needing to exit business is working, if there are also other subchannels in work
Make, should not also close clock.And the description for the embodiment that clock is negotiated according to front, in main channel not in the item of work
Under part, it can be confirmed that currently providing clock is echo cancellation module, at this point, the object for being closed clock should be echo
Cancellation module.Application processor after the determining clock for needing to close echo cancellation module offer, hold by notice echo cancellation module
Row.
In the above-mentioned description about the embodiment for destroying step, new working condition refers to newest or the last inspection
The working condition of survey is newly relative to the state detected when negotiating master slave mode.
It is described below for the overall plan of Fig. 5.In destroying step, first determine whether main channel needs to exit
Business.Subchannel is judged whether there is in the case where main channel needs to exit business to work, if so, then end step, no
Close clock；If it is not, closing clock provided by application processor.
And if main channel does not need to exit business, i.e., the instruction that application processor receives does not require main channel to exit industry
Business, needs to exit business, if also needing to exit business without any subchannel, tie then needing to judge whether there is subchannel
Beam step.And if needing to confirm that main channel and subchannel whether there is under conditions of thering is subchannel to need to exit business
The data feedback channel to work.If worked without any data feedback channel, clock can be closed, and under this condition,
The clock closed is provided by echo cancellation module.
The present embodiment provides a kind of perfect destruction mechanism, can close clock, under suitable conditions to reduce system
Power consumption.
It should be noted that channel mentioned by the various embodiments described above, only indicates signal/data transmission channel, tool
Body implementation includes but is not limited to the modes such as I2C, I2S or SPI.
The present embodiment discloses a kind of AEC audio control system, structure as shown in Figure 1, the present embodiment AEC audio frequency control
The clock machinery of consultation in above method embodiment may be implemented in application processor in system.
For the step number in above method embodiment, configured only for the purposes of illustrating explanation, between step
Sequence do not do any restriction, the execution of each step in embodiment sequence can according to the understanding of those skilled in the art come into
Row is adaptively adjusted.
It is to be illustrated to preferable implementation of the invention, but the present invention is not limited to the embodiment above, it is ripe
Various equivalent deformation or replacement can also be made on the premise of without prejudice to spirit of the invention by knowing those skilled in the art, this
Equivalent deformation or replacement are all included in the scope defined by the claims of the present application a bit.
Claims (10)
1. a kind of clock machinery of consultation of AEC audio control system, it is characterised in that: the following steps are included:
Determine the data feedback channel for needing to enable between application processor and echo cancellation module；Wherein, application processor and echo
Data feedback channel between cancellation module includes a main channel and several subchannels；
Detect the working condition in several channels among main channel and subchannel；
The working condition in several channels among data feedback channel and the main channel and subchannel enabled as needed, really
Determine master slave mode；
The clock module and notice echo cancellation module for configuring application processor according to master slave mode are according to the master slave mode
Configurable clock generator mode.
2. a kind of clock machinery of consultation of AEC audio control system according to claim 1, it is characterised in that: described
According to the working condition in several channels among the data feedback channel and the main channel and subchannel for needing to enable, principal and subordinate is determined
Mode specifically includes:
After determining that main channel needs to enable, master slave mode is determined according to the working condition of subchannel.
3. a kind of clock machinery of consultation of AEC audio control system according to claim 1, it is characterised in that: described
According to the working condition in several channels among the data feedback channel and the main channel and subchannel for needing to enable, principal and subordinate is determined
Mode specifically includes:
Determining that main channel do not need to enable, and after determining that at least one subchannel needs to enable, according to the work shape of main channel
State determines master slave mode.
4. a kind of clock machinery of consultation of AEC audio control system according to claim 1-3, feature exist
In: in the clock module and notice echo cancellation module for configuring application processor according to master slave mode according to the master slave mode
It is further comprising the steps of after configurable clock generator mode:
Determine the data feedback channel for needing to exit business；
Detect the new working condition in several channels among main channel and subchannel；
The new work shape in several channels among the data feedback channel and main channel and subchannel of business is exited as needed
Clock is closed or maintained to state.
5. a kind of clock machinery of consultation of AEC audio control system according to claim 4, it is characterised in that: described
According to the new working condition in several channels among the data feedback channel and main channel and subchannel for needing to exit business, close
Or clock is maintained, it specifically includes:
After determining that main channel needs to exit business, according to the new working condition of subchannel, clock is closed or maintained.
6. a kind of clock machinery of consultation of AEC audio control system according to claim 4, it is characterised in that: described
According to the new working condition in several channels among the data feedback channel and main channel and subchannel for needing to exit business, close
Or clock is maintained, it specifically includes:
Determining that main channel do not need to exit business, and after determining that at least one subchannel needs to exit business, according to main channel
With the new working condition of subchannel, clock is closed or maintained.
7. a kind of AEC audio control system, it is characterised in that: including application processor and echo cancellation module, at the application
Managing the data feedback channel between device and echo cancellation module includes a main channel and several subchannels；
The data feedback channel that the application processor is enabled for determining needs；Then it detects several among main channel and subchannel
The working condition in a channel；And among the data feedback channel and the main channel and subchannel enabled as needed several are logical
The working condition in road, determines master slave mode；The clock module of application processor is then configured according to master slave mode and is notified back
Sound cancellation module enters the master slave mode；
Echo cancellation module, when for carrying out echo cancellation process, and configured according to the master slave mode that application processor determines
Clock mode.
8. a kind of AEC audio control system according to claim 7, it is characterised in that: it is described enable as needed it is upper
The working condition in several channels among row of channels and the main channel and subchannel, determines master slave mode, specific to wrap
It includes:
After determining that main channel needs to enable, master slave mode is determined according to the working condition of subchannel.
9. a kind of AEC audio control system according to claim 7, it is characterised in that: it is described enable as needed it is upper
The working condition in several channels among row of channels and the main channel and subchannel, determines master slave mode, specific to wrap
It includes:
Determining that main channel do not need to enable, and after determining that at least one subchannel needs to enable, according to the work shape of main channel
State determines master slave mode.
10. according to a kind of described in any item AEC audio control systems of claim 7-9, it is characterised in that: the application processing
Device enters the master slave mode in the clock module and notice echo cancellation module for configuring application processor according to master slave mode
Afterwards, it is also used to:
Determine the data feedback channel for needing to exit business；
Detect the new working condition in several channels among main channel and subchannel；
The new work shape in several channels among the data feedback channel and main channel and subchannel of business is exited as needed
Clock is closed or maintained to state.
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