CN104538040A - Method and device for dynamically selecting communication voice signals - Google Patents

Method and device for dynamically selecting communication voice signals Download PDF

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Publication number
CN104538040A
CN104538040A CN201410706425.4A CN201410706425A CN104538040A CN 104538040 A CN104538040 A CN 104538040A CN 201410706425 A CN201410706425 A CN 201410706425A CN 104538040 A CN104538040 A CN 104538040A
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China
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voice signal
signal
amplitude
main sound
main
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CN201410706425.4A
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Chinese (zh)
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郑志勇
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广东欧珀移动通信有限公司
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Priority to CN201410706425.4A priority Critical patent/CN104538040A/en
Publication of CN104538040A publication Critical patent/CN104538040A/en

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Abstract

The invention relates to a method and device for dynamically selecting communication voice signals. The device comprises a main voice signal determination unit, an auxiliary voice signal determination unit and a communication voice signal determination unit; the main voice signal determination unit is used for collecting main voice signals from a main microphone channel and extracting the amplitude of the main voice signals according to the main voice signals; the auxiliary voice signal determination unit is used for collecting auxiliary voice signals from an auxiliary microphone channel and extracting the amplitude of the auxiliary voice signals according to the auxiliary voice signals; and the communication voice signal determination unit is used for comparing the amplitude of the main voice signals with the amplitude of the auxiliary voice signals and determining the voice signals with the large amplitude as the communication voice signals. The amplitude of the main voice signals collected from the main microphone channel is compared with the amplitude of the auxiliary voice signals collected from the auxiliary microphone channel; speech communication voice signals and environmental noise are accurately distinguished; convenience is brought to follow-up noise reduction processing; and the voice communication tone quality is improved.

Description

A kind of method and apparatus of Dynamic Selection call voice signal

Technical field

The present invention relates to sound signal processing technical field, particularly relate to a kind of method and apparatus of Dynamic Selection call voice signal.

Background technology

Current mobile phone on the market has multiple microphone mostly, and during voice call, the main microphone of mobile phone is mainly used in collecting the voice signal needing to be sent to the other side, and the secondary microphone of mobile phone is mainly used in collecting neighbourhood noise.Neighbourhood noise is used for needing the voice signal being sent to the other side to carry out noise reduction.Generally, main microphone and secondary microphone can be accustomed to according to the call of people, mobile phone pre-sets and immobilizes.As main microphone is arranged at relatively near the position of sound source, secondary microphone is arranged at relatively away from the position of sound source.But actual speech call process in, sometimes also there will be sound source from secondary microphone more close to situation.In this case, if still continue to use the method for above-mentioned noise reduction, real voice signal then greatly may be caused to be fallen as environmental noise filtering, and neighbourhood noise is on the contrary by as needing the voice signal being sent to the other side to send to the other side, and the tonequality of voice call is reduced greatly.

Summary of the invention

The object of the invention is to the method and apparatus proposing a kind of Dynamic Selection call voice signal, can ensure the voice signal that real-time selection is correct in the process of voice call, to improve the tonequality of voice call, accuracy is high and practical.

For reaching this object, the present invention by the following technical solutions:

First aspect, provides a kind of method of Dynamic Selection call voice signal, comprising:

Gather main sound signal from main microphone channel, extract main sound signal amplitude according to described main sound signal;

Gather secondary voice signal from secondary microphone channel, extract secondary voice signal amplitude according to described secondary voice signal;

Described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.

Wherein, described voice signal large for amplitude is defined as call voice signal after, also comprise:

Determine that described call voice signal is useful signal, another road voice signal is reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process, or;

Determine that described call voice signal is useful signal;

Remaining all voice signal is averaging processing, the average Voice signal of acquisition is defined as reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process.

Wherein, described described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude are defined as call voice signal, comprise:

Described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If both amplitudes are identical, then the main sound signal from the main microphone channel collection preset is defined as call voice signal;

If both amplitudes are not identical, then voice signal large for amplitude is defined as call voice signal, and using microphone channel corresponding for voice signal large for amplitude as the main microphone channel gathering call voice signal.

Wherein, described voice signal large for amplitude is defined as call voice signal after, also comprise:

At interval of predetermined period, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If this size comparing result is different with last size comparing result, the large voice signal of the amplitude then this determined is as call voice signal, and microphone channel corresponding to the large voice signal of the amplitude this determined switches to the main microphone channel gathering call voice signal.

Wherein, describedly extract main sound signal amplitude according to described main sound signal, comprising:

Obtain described main sound signal waveform according to described main sound signal, go out main sound signal amplitude according to described main sound signal waveform extracting;

Describedly extract secondary voice signal amplitude according to described secondary voice signal, comprising:

Obtain described secondary sound signal waveform according to described secondary voice signal, extract secondary voice signal amplitude according to described secondary sound signal waveform.

Second aspect, provides a kind of device of Dynamic Selection call voice signal, comprising:

Determining main sound signal unit, for gathering main sound signal from main microphone channel, extracting main sound signal amplitude according to described main sound signal;

Determining secondary voice signal unit, for gathering secondary voice signal from secondary microphone channel, extracting secondary voice signal amplitude according to described secondary voice signal;

Determine call voice signal element, for described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.

Wherein, the device of described Dynamic Selection call voice signal also comprises noise reduction unit, described noise reduction unit, for:

Determine that described call voice signal is useful signal, another road voice signal is reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process, or;

Determine that described call voice signal is useful signal;

Remaining all voice signal is averaging processing, the average Voice signal of acquisition is defined as reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process.

Wherein, describedly determine call voice signal element, specifically for:

Described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If both amplitudes are identical, then the main sound signal from the main microphone channel collection preset is defined as call voice signal;

If both amplitudes are not identical, then voice signal large for amplitude is defined as call voice signal, and using microphone channel corresponding for voice signal large for amplitude as the main microphone channel gathering call voice signal.

Wherein, the device of described Dynamic Selection call voice signal also comprises switch unit, described switch unit, for:

At interval of predetermined period, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If this size comparing result is different with last size comparing result, the large voice signal of the amplitude then this determined is as call voice signal, and microphone channel corresponding to the large voice signal of the amplitude this determined switches to the main microphone channel gathering call voice signal.

Wherein, describedly extract main sound signal amplitude according to described main sound signal, comprising:

Obtain described main sound signal waveform according to described main sound signal, go out main sound signal amplitude according to described main sound signal waveform extracting;

Describedly extract secondary voice signal amplitude according to described secondary voice signal, comprising:

Obtain described secondary sound signal waveform according to described secondary voice signal, extract secondary voice signal amplitude according to described secondary sound signal waveform.

Beneficial effect of the present invention is: a kind of method and apparatus of Dynamic Selection call voice signal, comprises determining main sound signal unit, determining secondary voice signal unit and determine call voice signal element; Describedly determining main sound signal unit, for gathering main sound signal from main microphone channel, extracting main sound signal amplitude according to described main sound signal; Describedly determining secondary voice signal unit, for gathering secondary voice signal from secondary microphone channel, extracting secondary voice signal amplitude according to described secondary voice signal; Describedly determine call voice signal element, for described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.The method and apparatus of this Dynamic Selection call voice signal, the amplitude of the main sound signal gathered from main microphone channel by contrast and the amplitude of secondary voice signal gathered from secondary microphone channel, distinguish voice call voice signal and neighbourhood noise accurately, facilitate follow-up noise reduction process, improve the tonequality of voice call, accuracy is high and practical.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.

Fig. 1 is the method flow diagram of method first embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.

Fig. 2 is the method flow diagram of method second embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.

Fig. 3 is the block diagram of device first embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.

Fig. 4 is the block diagram of device second embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.

Embodiment

The technical matters solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Please refer to Fig. 1, it is the method flow diagram of method first embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.The method of the Dynamic Selection call voice signal of the embodiment of the present invention, can be applicable to various device or terminal, as panel computer, notebook computer, PC, smart mobile phone etc.

The method of this Dynamic Selection call voice signal, comprising:

Step S101, gather main sound signal from main microphone channel, extract main sound signal amplitude according to described main sound signal.

Step S102, gather secondary voice signal from secondary microphone channel, extract secondary voice signal amplitude according to described secondary voice signal.

Sound vibrates exactly, and vibration can change the pressure of air on eardrum, and during pressure change, people just can feel sound.Microphone can respond to the vibration of sound, and converts them to electric current.Equally, electric current, again through amplifier and loudspeaker, just can change sound into again.Be converted in the process of electric current at sound, can represent with the sine wave vibrated in time.Sine wave relates to two parameters, is respectively amplitude (peak swing namely in one-period) and frequency.The volume of the corresponding sound of amplitude, the tone of the corresponding sound of frequency.Generally, the scope of sine wave freuqency that people's ear can be experienced is the high-frequency sound from the low-frequency sound of 20Hz (cycle per second) to 20,000Hz.

Wherein, describedly extract main sound signal amplitude according to described main sound signal, comprising:

Obtain described main sound signal waveform according to described main sound signal, go out main sound signal amplitude according to described main sound signal waveform extracting;

Describedly extract secondary voice signal amplitude according to described secondary voice signal, comprising:

Obtain described secondary sound signal waveform according to described secondary voice signal, extract secondary voice signal amplitude according to described secondary sound signal waveform.

Step S103, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.

The method of the Dynamic Selection call voice signal that the embodiment of the present invention provides, the amplitude of the main sound signal gathered from main microphone channel by contrast and the amplitude of secondary voice signal gathered from secondary microphone channel, distinguish voice call voice signal and neighbourhood noise accurately, facilitate follow-up noise reduction process, improve the tonequality of voice call, accuracy is high and practical.

Please refer to Fig. 2, it is the method flow diagram of method second embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.The key distinction of method first embodiment of the embodiment of the present invention and Dynamic Selection call voice signal is, adds the concrete steps of noise reduction and switching at runtime call voice signal.

The method of this Dynamic Selection call voice signal, comprising:

Step S201, gather main sound signal from main microphone channel, extract main sound signal amplitude according to described main sound signal.

Step S202, gather secondary voice signal from secondary microphone channel, extract secondary voice signal amplitude according to described secondary voice signal.

Step S203, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If both amplitudes are identical, then the main sound signal from the main microphone channel collection preset is defined as call voice signal;

If both amplitudes are not identical, then voice signal large for amplitude is defined as call voice signal, and using microphone channel corresponding for voice signal large for amplitude as the main microphone channel gathering call voice signal.

The situation that main sound signal amplitude is identical with secondary voice signal amplitude, general corresponding user alters one's posture, pipe down or scene that neighbourhood noise is excessive.Now, communicating terminal returns to initial setting up automatically, and the main sound signal of the main microphone channel collection preset is defined as call voice signal.

Step S204, at interval of predetermined period, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If this size comparing result is different with last size comparing result, the large voice signal of the amplitude then this determined is as call voice signal, and microphone channel corresponding to the large voice signal of the amplitude this determined switches to the main microphone channel gathering call voice signal.

It should be noted that, step S203 and step S204 does not have sequencing relation, can be first implementation step S203 implementation step S204 again, can first implementation step S204 implementation step S203 more yet, can also be step S203 and step S204 parallel practice.

At interval of predetermined period, carry out size contrast to by described main sound signal amplitude and secondary voice signal amplitude; According to size comparing result, distinguish voice call voice signal and neighbourhood noise accurately in real time, for a long time, stably to keep the high tone quality of voice call.Preferably, described predetermined period is 1s, 2s or 5s.

Step S205, determine that described call voice signal is useful signal, another road voice signal is reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process, or;

Determine that described call voice signal is useful signal;

Remaining all voice signal is averaging processing, the average Voice signal of acquisition is defined as reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process.

In general there is the communicating terminal of diamylose noise reduction, be all respectively provided with a microphone at its top and bottom.The volume of these two microphones is all very little, but effect has obvious difference, and wherein the microphone of bottom is used to provide clear call voice, and the microphone at top is used to eliminate environmental noise.Usually, the microphone of bottom is called main microphone, the microphone at top calls secondary microphone.

During voice call, because main microphone is different with the distance of secondary microphone distance sound source, namely the distance of distance face is different, so be also different respectively by the wave volume size of two microphone channel pickups.Utilize this difference, just can filter out context noise and holding voice signal to greatest extent.And in voice call process, the ambient noise volume of two microphone channel pickups is identical substantially, and the volume that ticket call voice signal has about 6dB is poor.After collecting neighbourhood noise, just can be used for eliminating environmental noise after generating compensating signal by decoding.

In addition, except conventional diamylose noise-reduction method, existing communicating terminal is as additionally used wheat, barley and highland barley noise-reduction method in iPhone 5, and the principle of wheat, barley and highland barley noise-reduction method is substantially identical with diamylose noise reduction, but the effect of wheat, barley and highland barley noise reduction can be better.

The method of the Dynamic Selection call voice signal that the embodiment of the present invention provides, voice call voice signal and neighbourhood noise can be distinguished dynamically, accurately in real time, to carry out follow-up noise reduction process, the high tone quality of sustainable stable maintenance voice call, user experience is high.

The embodiment of the device of the Dynamic Selection call voice signal provided for the embodiment of the present invention below.The embodiment of the embodiment of the device of Dynamic Selection call voice signal and the method for above-mentioned Dynamic Selection call voice signal belongs to same design, the detail content of not detailed description in the embodiment of the device of Dynamic Selection call voice signal, can with reference to the embodiment of the method for above-mentioned Dynamic Selection call voice signal.

Please refer to Fig. 3, it is the block diagram of device first embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.

The device of this Dynamic Selection call voice signal, comprising:

Determining main sound signal unit 10, for gathering main sound signal from main microphone channel, extracting main sound signal amplitude according to described main sound signal;

Determining secondary voice signal unit 20, for gathering secondary voice signal from secondary microphone channel, extracting secondary voice signal amplitude according to described secondary voice signal;

Determine call voice signal element 30, for described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.

The device of the Dynamic Selection call voice signal that the embodiment of the present invention provides, the amplitude of the main sound signal gathered from main microphone channel by contrast and the amplitude of secondary voice signal gathered from secondary microphone channel, distinguish voice call voice signal and neighbourhood noise accurately, facilitate follow-up noise reduction process, improve the tonequality of voice call, accuracy is high and practical.

Please refer to Fig. 4, it is the block diagram of device second embodiment of the Dynamic Selection call voice signal that the embodiment of the present invention provides.The key distinction of device first embodiment of the embodiment of the present invention and Dynamic Selection call voice signal is, adds noise reduction unit 40 and switch unit 50.

The device of this Dynamic Selection call voice signal, comprising:

Determining main sound signal unit 10, for gathering main sound signal from main microphone channel, extracting main sound signal amplitude according to described main sound signal;

Determining secondary voice signal unit 20, for gathering secondary voice signal from secondary microphone channel, extracting secondary voice signal amplitude according to described secondary voice signal;

Determine call voice signal element 30, for described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.

Wherein, the device of described Dynamic Selection call voice signal also comprises noise reduction unit 40, described noise reduction unit 40, for:

Determine that described call voice signal is useful signal, another road voice signal is reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process, or;

Determine that described call voice signal is useful signal;

Remaining all voice signal is averaging processing, the average Voice signal of acquisition is defined as reference signal;

Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process.

Wherein, describedly determine call voice signal element 30, specifically for:

Described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If both amplitudes are identical, then the main sound signal from the main microphone channel collection preset is defined as call voice signal;

If both amplitudes are not identical, then voice signal large for amplitude is defined as call voice signal, and using microphone channel corresponding for voice signal large for amplitude as the main microphone channel gathering call voice signal.

Wherein, the device of described Dynamic Selection call voice signal also comprises switch unit 50, described switch unit 50, for:

At interval of predetermined period, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;

If this size comparing result is different with last size comparing result, the large voice signal of the amplitude then this determined is as call voice signal, and microphone channel corresponding to the large voice signal of the amplitude this determined switches to the main microphone channel gathering call voice signal.

Wherein, describedly extract main sound signal amplitude according to described main sound signal, comprising:

Obtain described main sound signal waveform according to described main sound signal, go out main sound signal amplitude according to described main sound signal waveform extracting;

Describedly extract secondary voice signal amplitude according to described secondary voice signal, comprising:

Obtain described secondary sound signal waveform according to described secondary voice signal, extract secondary voice signal amplitude according to described secondary sound signal waveform.

The device of the Dynamic Selection call voice signal that the embodiment of the present invention provides, voice call voice signal and neighbourhood noise can be distinguished dynamically, accurately in real time, to carry out follow-up noise reduction process, the high tone quality of sustainable stable maintenance voice call, user experience is high.

A method and apparatus for Dynamic Selection call voice signal, can ensure the voice signal that real-time selection is correct in the process of voice call, and to improve the tonequality of voice call, accuracy is high and practical.

One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, this program can be stored in a computer-readable recording medium, and storage medium can comprise storer, disk or CD etc.

Above content is only preferred embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.

Claims (10)

1. a method for Dynamic Selection call voice signal, is characterized in that, comprising:
Gather main sound signal from main microphone channel, extract main sound signal amplitude according to described main sound signal;
Gather secondary voice signal from secondary microphone channel, extract secondary voice signal amplitude according to described secondary voice signal;
Described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.
2. the method for Dynamic Selection call voice signal according to claim 1, is characterized in that, described voice signal large for amplitude is defined as call voice signal after, also comprise:
Determine that described call voice signal is useful signal, another road voice signal is reference signal;
Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process, or;
Determine that described call voice signal is useful signal;
Remaining all voice signal is averaging processing, the average Voice signal of acquisition is defined as reference signal;
Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process.
3. the method for Dynamic Selection call voice signal according to claim 1, is characterized in that, described described main sound signal amplitude and secondary voice signal amplitude is carried out size contrast, voice signal large for amplitude is defined as call voice signal, comprises:
Described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;
If both amplitudes are identical, then the main sound signal from the main microphone channel collection preset is defined as call voice signal;
If both amplitudes are not identical, then voice signal large for amplitude is defined as call voice signal, and using microphone channel corresponding for voice signal large for amplitude as the main microphone channel gathering call voice signal.
4. the method for Dynamic Selection call voice signal according to claim 1, is characterized in that, described voice signal large for amplitude is defined as call voice signal after, also comprise:
At interval of predetermined period, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;
If this size comparing result is different with last size comparing result, the large voice signal of the amplitude then this determined is as call voice signal, and microphone channel corresponding to the large voice signal of the amplitude this determined switches to the main microphone channel gathering call voice signal.
5. the method for Dynamic Selection call voice signal according to claim 1, is characterized in that,
Describedly extract main sound signal amplitude according to described main sound signal, comprising:
Obtain described main sound signal waveform according to described main sound signal, go out main sound signal amplitude according to described main sound signal waveform extracting;
Describedly extract secondary voice signal amplitude according to described secondary voice signal, comprising:
Obtain described secondary sound signal waveform according to described secondary voice signal, extract secondary voice signal amplitude according to described secondary sound signal waveform.
6. a device for Dynamic Selection call voice signal, is characterized in that, comprising:
Determining main sound signal unit, for gathering main sound signal from main microphone channel, extracting main sound signal amplitude according to described main sound signal;
Determining secondary voice signal unit, for gathering secondary voice signal from secondary microphone channel, extracting secondary voice signal amplitude according to described secondary voice signal;
Determine call voice signal element, for described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast, voice signal large for amplitude is defined as call voice signal.
7. the device of Dynamic Selection call voice signal according to claim 6, is characterized in that, the device of described Dynamic Selection call voice signal also comprises noise reduction unit, described noise reduction unit, for:
Determine that described call voice signal is useful signal, another road voice signal is reference signal;
Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process, or;
Determine that described call voice signal is useful signal;
Remaining all voice signal is averaging processing, the average Voice signal of acquisition is defined as reference signal;
Described useful signal and reference signal input audio digital signal processor are carried out noise reduction process.
8. the device of Dynamic Selection call voice signal according to claim 6, is characterized in that, describedly determines call voice signal element, specifically for:
Described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;
If both amplitudes are identical, then the main sound signal from the main microphone channel collection preset is defined as call voice signal;
If both amplitudes are not identical, then voice signal large for amplitude is defined as call voice signal, and using microphone channel corresponding for voice signal large for amplitude as the main microphone channel gathering call voice signal.
9. the device of Dynamic Selection call voice signal according to claim 6, is characterized in that, the device of described Dynamic Selection call voice signal also comprises switch unit, described switch unit, for:
At interval of predetermined period, described main sound signal amplitude and secondary voice signal amplitude are carried out size contrast;
If this size comparing result is different with last size comparing result, the large voice signal of the amplitude then this determined is as call voice signal, and microphone channel corresponding to the large voice signal of the amplitude this determined switches to the main microphone channel gathering call voice signal.
10. the device of Dynamic Selection call voice signal according to claim 6, is characterized in that,
Describedly extract main sound signal amplitude according to described main sound signal, comprising:
Obtain described main sound signal waveform according to described main sound signal, go out main sound signal amplitude according to described main sound signal waveform extracting;
Describedly extract secondary voice signal amplitude according to described secondary voice signal, comprising:
Obtain described secondary sound signal waveform according to described secondary voice signal, extract secondary voice signal amplitude according to described secondary sound signal waveform.
CN201410706425.4A 2014-11-28 2014-11-28 Method and device for dynamically selecting communication voice signals CN104538040A (en)

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CN106210219A (en) * 2015-05-06 2016-12-07 小米科技有限责任公司 Noise-reduction method and device
CN106210219B (en) * 2015-05-06 2019-03-22 小米科技有限责任公司 Noise-reduction method and device
CN105049606A (en) * 2015-06-17 2015-11-11 惠州Tcl移动通信有限公司 Mobile terminal microphone switching method and switching system
CN106331359B (en) * 2016-08-31 2017-09-12 广东欧珀移动通信有限公司 A kind of speech signal collection method, device and terminal
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CN107566953A (en) * 2016-12-12 2018-01-09 北京数科技有限公司 The switching method and device of dual microphone
CN106791095A (en) * 2016-12-21 2017-05-31 惠州Tcl移动通信有限公司 A kind of implementation method of automatic improvement call tone quality and realize system
CN107682529A (en) * 2017-09-07 2018-02-09 维沃移动通信有限公司 A kind of acoustic signal processing method and mobile terminal
CN107682529B (en) * 2017-09-07 2019-11-26 维沃移动通信有限公司 A kind of acoustic signal processing method and mobile terminal
WO2019061323A1 (en) * 2017-09-29 2019-04-04 深圳传音通讯有限公司 Noise canceling method and terminal

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