CN106953961A - The mobile phone speech application apparatus and its application process of a kind of dual microphone - Google Patents
The mobile phone speech application apparatus and its application process of a kind of dual microphone Download PDFInfo
- Publication number
- CN106953961A CN106953961A CN201710295241.7A CN201710295241A CN106953961A CN 106953961 A CN106953961 A CN 106953961A CN 201710295241 A CN201710295241 A CN 201710295241A CN 106953961 A CN106953961 A CN 106953961A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 19
- 230000009977 dual effect Effects 0.000 title claims abstract description 18
- 230000006870 function Effects 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims abstract description 11
- 238000009432 framing Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 238000007781 pre-processing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
- H04M1/6505—Recording arrangements for recording a message from the calling party storing speech in digital form
Abstract
The present invention relates to the mobile phone speech application apparatus and its application process of a kind of dual microphone, the device includes being arranged on the secondary microphone of mobile phone upper end, the audio processing chip for being arranged on the main microphon of mobile phone lower end and being connected respectively with secondary microphone and main microphon, audio processing chip includes voice pretreatment module, voice signal judges and selecting module and speech processing module, voice pretreatment module completes the framing to two microphone pickup signals and the pretreatment work filtered and exports two signals to voice signal judgement and selecting module, voice signal judges and selecting module is judged and selected to each frame signal, the signal chosen is sent into speech processing module, speech processing module each frame signal connect between frame and frame and noise reduction language process function.The sound-source signal that the present invention provides for the various voice applications such as voice call, sound recording and speech recognition.
Description
Technical field
The invention belongs to mobile terminal device technical field, and in particular to a kind of mobile phone speech application apparatus of dual microphone
And its application process.
Background technology
At present, most of mobile phones are all equipped with two microphones, and this allocating method is divided to two kinds：One kind is a main microphon
In some position of mobile phone bottom, a secondary microphone is located at mobile phone back top；Another is that a main microphon is in hand
Some position of machine bottom, secondary microphone is located at the positive top of mobile phone.Both dual microphone allocation plans play a part of
Adaptive noise reduction function, main microphon below picks up the voice and ambient noise for arriving speaker, and secondary microphone above is used for
Ambient noise is picked up, the voice signal then picked up by all kinds of noise reduction algorithms to two microphones is handled, and eliminates the back of the body
Scape noise, then clearly will be passed to distal end by voice signal.
During the common mobile phone use of people, people always because a variety of causes constantly convert mobile phone and mouth position and
Distance, relative to mobile phone, sometimes the position of mouth is below mobile phone, sometimes in mobile phone centre position, is sometimes in again
Mobile phone upper position.And be likely to produce various call attitudes either under handset mode or under hands-free mode, for
Most extreme mode, because the loudspeaker of mobile phone is normally at mobile phone bottom, utilizes hands-free mode in a noisy environment
When being conversed, people are likely to be inverted by mobile phone, allow mobile phone bottom loudspeaker to be directed at ear, and mouth is directed at mobile phone
Top, is conversed in a mode.But the feelings being actually continually changing in the above mobile phone and people's mouth position
Under condition, it is desirable to which it is impossible to obtain preferably call experience.In a word, mouth is with respect to the position meeting of two microphones up and down on mobile phone
Changed because of call attitude, sometimes mouth is closer to the distance from main microphon, and sometimes mouth is closer to the distance from secondary microphone.
So, for the current diamylose gram voice call noise reduction technology of mobile phone, the application on mobile phone is actually to have limitation.
In addition to mobile phone communication, there are other many voice application functions, such as sound-recording function, various on current mobile phone
Speech recognition application, speech communication software etc., then for some such voice applications, people are carrying out language against mobile phone
Attitude during sound typing is just more without a fixed pattern, and except conventional pattern of making a phone call, people are usually it is also possible that one
While the screen that sees the mobile phone is while carry out voice typing, in a word for voice application, people are thousand in the fashionable posture of Speech Record
Appearance different expressions, then no matter for any typing attitude, mouth is from being all different with a distance from two microphones on mobile phone
, there may come a time when it is nearer from main microphon, it is sometimes nearer from secondary microphone, so, to allow voice typing to obtain preferable effect,
It is incomplete by existing dual microphone noise reduction schemes.
The content of the invention
The technical problems to be solved by the invention are to overcome the deficiencies in the prior art there is provided a kind of mobile phone language of dual microphone
Sound application apparatus and its application process so that mobile phone can preferably pick up the sound of speaker, cover ambient noise are clear to reach
Clear sound typing, transmission are handled, the sound source provided for the various voice applications such as voice call, sound recording and speech recognition
Signal.
To solve above technical problem, a kind of technical scheme that the present invention takes is：
A kind of mobile phone speech application apparatus of dual microphone, including be arranged on the secondary microphone of mobile phone upper end, be arranged on hand
The main microphon of machine lower end and the audio processing chip being connected respectively with secondary microphone and main microphon, audio processing chip bag
Include voice pretreatment module, voice signal to judge and selecting module and speech processing module, voice pretreatment module is completed to two
The pretreatment work of framing and the filtering of individual microphone pickup signal simultaneously exports two signals to voice signal judgement and selects mould
Block, voice signal judges and selecting module is judged and selected to each frame signal, and the signal chosen is sent at voice
Manage module, speech processing module each frame signal connect between frame and frame and noise reduction language process function.
Preferably, the device also includes the voice application module being connected with audio processing chip, and speech processing module will
The signal feeding voice application module being disposed, completes voice application functions.
Preferably, secondary microphone is connected by A/D converter with audio processing chip respectively with main microphon, and A/D turns
The analog signal that microphone is gathered is converted to data signal by parallel operation.
A kind of application process of the mobile phone speech application apparatus of dual microphone, comprises the following steps：
(1) while carrying out pickup, and the simulation for gathering microphone by A/D converter to main microphon and secondary microphone
Signal is converted to data signal and is conveyed to audio processing chip；
(2) the voice pretreatment module in audio processing chip completes the framing and filtering to two microphone pickup signals
Pretreatment work and export two signals to voice signal judgement and selecting module；
(3) voice signal judges and selecting module is judged and selected to each frame signal, and the signal chosen is sent
Enter speech processing module；
(4) speech processing module each frame signal connect between frame and frame and noise reduction language process function.
Preferably, the signal being disposed also is sent into voice application module including step (5) speech processing module, completed
Voice application functions.
Preferably, the tool that voice signal judges in step (3) and selecting module is judged and selected to each frame signal
Gymnastics conduct：The signal from voice sound source that main microphon picks up is set as x1(t) what, secondary microphone was picked up speakes to oneself
The signal in speech source is x2(t), ambient noise signal is n (t), and all signals that main microphon is picked up during any time t are y1
(t)=x1(t)+n (t), all signals that secondary microphone is picked up are y2(t)=x2(t)+n (t), by two Mike's wind
Number y1And y (t)2(t) in a certain frame the signal amplitude at all time points summationWithCome
Judge that the signal amplitude which microphone is picked up is higher, if, Y1＞ Y2, select the signal of main microphon pickup to be used as input
Signal, if Y2＞ Y1, select the signal of secondary microphone pickup to be used as input signal.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art：
The present invention is conversed in the portable mobile terminal equipment such as mobile phone or during various voice applications, utilizes mobile phone or movement
The dual microphone being equipped with terminal is to sound-source signal while pickup is carried out, while using the audio processing chip on mobile phone to two-way
Voice signal is judged and selected, and is selected better quality or to the more preferable sound all the way of masking by noise effect, is input to language
In sound application, so as to obtain preferably call or voice application effect.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the flow chart of the present invention；
Wherein：1st, main microphon；2nd, secondary microphone；3rd, A/D converter；4th, audio processing chip.
Embodiment
The present invention is described in further details below in conjunction with drawings and the specific embodiments.
As shown in Figure 1, the mobile phone speech application apparatus of a kind of dual microphone of the invention, including be arranged on mobile phone upper end
Secondary microphone 2, it is arranged at the main microphon 1 of mobile phone lower end and the audio being connected respectively with secondary microphone 2 and main microphon 1
Chip 4 is managed, audio processing chip 4 includes voice pretreatment module, voice signal and judged and selecting module and speech processing module,
Voice pretreatment module completes two signals of pretreatment work and output of the framing and filtering to two microphone pickup signals
Judge to voice signal and selecting module, voice signal judges and selecting module is judged and selected to each frame signal, will
The signal feeding speech processing module that chooses, speech processing module to each frame signal between frame and frame connect and noise reduction
Language process function.
In the present embodiment, the device also includes the voice application module being connected with audio processing chip 4, speech processes
The signal being disposed is sent into voice application module by module, completes voice application functions.
In the present embodiment, secondary microphone 2 passes through A/D converter 3 and the phase of audio processing chip 4 respectively with main microphon 1
The analog signal that microphone is gathered is converted to data signal by connection, A/D converter 3.
A kind of application process of the mobile phone speech application apparatus of dual microphone of the present invention, comprises the following steps：
(1) while carrying out pickup, and the simulation for gathering microphone by A/D converter to main microphon and secondary microphone
Signal is converted to data signal and is conveyed to audio processing chip；
(2) the voice pretreatment module in audio processing chip completes the framing and filtering to two microphone pickup signals
Pretreatment work and export two signals to voice signal judgement and selecting module；
(3) voice signal judges and selecting module is judged and selected to each frame signal, and the signal chosen is sent
Enter speech processing module；
(4) speech processing module each frame signal connect between frame and frame and noise reduction language process function.
(5) signal being disposed is sent into voice application module by speech processing module, completes voice application functions.
Wherein, in step (3) voice signal judge and selecting module each frame signal is judged and selected it is specific
Operate and be：The signal from voice sound source that main microphon picks up is set as x1(t) what, secondary microphone was picked up comes from voice
The signal of sound source is x2(t), ambient noise signal is n (t), and all signals that main microphon is picked up during any time t are y1
(t)=x1(t)+n (t), all signals that secondary microphone is picked up are y2(t)=x2(t)+n (t), by two Mike's wind
Number y1And y (t)2(t) in a certain frame the signal amplitude at all time points summationWithTo sentence
The signal amplitude which disconnected microphone is picked up is higher, if, Y1＞ Y2, the signal of selection main microphon pickup, which is used as to input, to be believed
Number, if Y2＞ Y1, select the signal of secondary microphone pickup to be used as input signal.
The present invention is described in detail above, the explanation of embodiment be only intended to help understand the method for the present invention and
Its core concept, its object is to allow the personage for being familiar with this art to understand present disclosure and implement according to this, and
It can not be limited the scope of the invention with this.Any equivalent change or modification in accordance with the spirit of the invention, should all contain
Cover within protection scope of the present invention.
Claims (6)
1. a kind of mobile phone speech application apparatus of dual microphone, it is characterised in that：Including be arranged on mobile phone upper end secondary microphone,
The audio processing chip for being arranged on the main microphon of mobile phone lower end and being connected respectively with secondary microphone and main microphon, the sound
Frequency process chip includes voice pretreatment module, voice signal and judged and selecting module and speech processing module, and the voice is pre-
Processing module completes the framing to two microphone pickup signals and the pretreatment work filtered and exports two signals described in
Voice signal judges and selecting module that the voice signal judges and selecting module is judged and selected to each frame signal,
The signal chosen is sent into the speech processing module, the speech processing module carries out phase between frame and frame to each frame signal
Connect the language process function with noise reduction.
2. the mobile phone speech application apparatus of dual microphone according to claim 1, it is characterised in that：Also include and the sound
The signal being disposed is sent into voice application mould by the voice application module that frequency process chip is connected, the speech processing module
Block, completes voice application functions.
3. the mobile phone speech application apparatus of dual microphone according to claim 1, it is characterised in that：The secondary microphone with
Main microphon is connected by A/D converter with the audio processing chip respectively, what the A/D converter gathered microphone
Analog signal is converted to data signal.
4. the application of the mobile phone speech application apparatus of the dual microphone according to any one of claims 1 to 3 claim
Method, it is characterised in that：Comprise the following steps：
(1) while carrying out pickup, and the analog signal for gathering microphone by A/D converter to main microphon and secondary microphone
Be converted to data signal and be conveyed to audio processing chip；
(2) voice pretreatment module in audio processing chip completes the pre- of framing to two microphone pickup signals and filtering
Handle work and export two signals and judge to voice signal and selecting module；
(3) voice signal judges and selecting module is judged and selected to each frame signal, and the signal chosen is sent into language
Sound processing module；
(4) speech processing module each frame signal connect between frame and frame and noise reduction language process function.
5. the application process of the mobile phone speech application apparatus of dual microphone according to claim 4, it is characterised in that：Also wrap
Include step (5) speech processing module and the signal being disposed is sent into voice application module, complete voice application functions.
6. the application process of the mobile phone speech application apparatus of dual microphone according to claim 4, it is characterised in that：It is described
Voice signal judges in step (3) and selecting module concrete operations that each frame signal is judged and selected are：Setting master
The signal from voice sound source that microphone is picked up is x1(t) signal from voice sound source that, secondary microphone is picked up is x2
(t), ambient noise signal is n (t), and all signals that main microphon is picked up during any time t are y1(t)=x1(t)+n (t),
All signals that secondary microphone is picked up are y2(t)=x2(t)+n (t), by two microphone signal y1And y (t)2(t) exist
The summation of the signal amplitude at all time points in a certain frameWithTo judge which microphone is picked up
The signal amplitude got is higher, if, Y1＞ Y2, the signal of selection main microphon pickup is as input signal, if Y2＞ Y1,
The signal of selection secondary microphone pickup is used as input signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710295241.7A CN106953961A (en) | 2017-04-28 | 2017-04-28 | The mobile phone speech application apparatus and its application process of a kind of dual microphone |
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| CN201710295241.7A CN106953961A (en) | 2017-04-28 | 2017-04-28 | The mobile phone speech application apparatus and its application process of a kind of dual microphone |
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Cited By (7)
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| CN108924331A (en) * | 2018-07-24 | 2018-11-30 | Oppo（重庆）智能科技有限公司 | Voice pick-up method and Related product |
| CN109121046A (en) * | 2018-07-24 | 2019-01-01 | Oppo（重庆）智能科技有限公司 | Plug-hole processing method and Related product |
| CN109121042A (en) * | 2018-07-26 | 2019-01-01 | Oppo广东移动通信有限公司 | Voice data processing method and Related product |
| CN109151698A (en) * | 2018-07-26 | 2019-01-04 | Oppo广东移动通信有限公司 | Microphone plug-hole detection method and Related product |
| CN109446536A (en) * | 2018-10-26 | 2019-03-08 | 深圳市友杰智新科技有限公司 | A kind of system and method judging translater input original language according to the sound intensity |
| CN109817214A (en) * | 2019-03-12 | 2019-05-28 | 百度在线网络技术（北京）有限公司 | Exchange method and device applied to vehicle |
| WO2021056999A1 (en) * | 2019-09-24 | 2021-04-01 | 腾讯科技（深圳）有限公司 | Voice call method and apparatus, electronic device, and computer-readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108924331A (en) * | 2018-07-24 | 2018-11-30 | Oppo（重庆）智能科技有限公司 | Voice pick-up method and Related product |
| CN109121046A (en) * | 2018-07-24 | 2019-01-01 | Oppo（重庆）智能科技有限公司 | Plug-hole processing method and Related product |
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| CN109121042A (en) * | 2018-07-26 | 2019-01-01 | Oppo广东移动通信有限公司 | Voice data processing method and Related product |
| CN109121042B (en) * | 2018-07-26 | 2020-12-08 | Oppo广东移动通信有限公司 | Voice data processing method and related product |
| CN109446536A (en) * | 2018-10-26 | 2019-03-08 | 深圳市友杰智新科技有限公司 | A kind of system and method judging translater input original language according to the sound intensity |
| CN109817214A (en) * | 2019-03-12 | 2019-05-28 | 百度在线网络技术（北京）有限公司 | Exchange method and device applied to vehicle |
| CN109817214B (en) * | 2019-03-12 | 2021-11-23 | 阿波罗智联(北京)科技有限公司 | Interaction method and device applied to vehicle |
| CN113763956A (en) * | 2019-03-12 | 2021-12-07 | 百度在线网络技术（北京）有限公司 | Interaction method and device applied to vehicle |
| CN113763957A (en) * | 2019-03-12 | 2021-12-07 | 百度在线网络技术（北京）有限公司 | Interaction method and device applied to vehicle |
| WO2021056999A1 (en) * | 2019-09-24 | 2021-04-01 | 腾讯科技（深圳）有限公司 | Voice call method and apparatus, electronic device, and computer-readable storage medium |
| US11875808B2 (en) | 2019-09-24 | 2024-01-16 | Tencent Technology (Shenzhen) Company Limited | Voice call method and apparatus, electronic device, and computer-readable storage medium |
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