CN106887237A - Mobile terminal and its noise-reduction method conversed under headset mode, system - Google Patents
Mobile terminal and its noise-reduction method conversed under headset mode, system Download PDFInfo
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- CN106887237A CN106887237A CN201710071499.9A CN201710071499A CN106887237A CN 106887237 A CN106887237 A CN 106887237A CN 201710071499 A CN201710071499 A CN 201710071499A CN 106887237 A CN106887237 A CN 106887237A
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- 238000011946 reduction process Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000005457 optimization Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
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Classifications
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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
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
-
- 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
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Quality & Reliability (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephone Set Structure (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Headphones And Earphones (AREA)
Abstract
The present invention discloses mobile terminal and its noise-reduction method, the system conversed under headset mode, noise-reduction method, and it includes step：A, when earphone is inserted into mobile terminal and is conversed, user's sound of speaking and ambient noise are picked up by earphone Mike and the first electric signal U1 is converted into；Meanwhile, ambient noise and user's sound of speaking are picked up by mobile terminal Mike and the second electric signal U2 is converted into；The absolute value U3 of B, the difference of calculating the first electric signal U1 and the second electric signal U2；C, the absolute value U3 and preset value U0 are compared；If D, absolute value U3<Preset value U0, then compensated to absolute value U3, and absolute value U3 is compensated to the size of preset value U0, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, absolute value U3 is directly exported.Noise-reduction method of the invention realizes the noise reduction purpose to voice, it is ensured that provide more preferable tonequality to other side.
Description
Technical field
The present invention relates to field of mobile terminals, more particularly to mobile terminal and its drop conversed under headset mode
Method for de-noising, system.
Background technology
Social now, the mobile terminal with smart mobile phone as representative has turned into staff standard configuration, although function is increasingly enriched,
But its communication function is still main flow.In order to constantly lift tonequality, increasing manufacturer provides various noise reduction schemes, but absolutely
It is most of to be directed to conventional handset mode.Under headset mode, due to Cost Problems, earphone is generally only furnished with 1 Mike, in noise
Under heterocycle border, the sound that user is sent out by ear microphone causes partner often to be listened not by noise reduction process
It is clear.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide mobile terminal and its under headset mode
Noise-reduction method, the system conversed, it is intended to solve the problems, such as that existing mobile terminal has noise in communication process.
Technical scheme is as follows：
A kind of mobile terminal is in the noise-reduction method conversed under headset mode, wherein, including step：
A, when earphone is inserted into mobile terminal and is conversed, by earphone Mike pick up user's sound of speaking and surrounding ring
Border noise is simultaneously converted into the first electric signal U1；Meanwhile, ambient noise and user's voice are picked up by mobile terminal Mike
Sound is simultaneously converted into the second electric signal U2；
The absolute value U3 of B, the difference of calculating the first electric signal U1 and the second electric signal U2；
C, the absolute value U3 and preset value U0 are compared；
If D, absolute value U3<Preset value U0, then compensate to absolute value U3, absolute value U3 is compensated to the size of preset value U0
Afterwards, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, absolute value U3 is directly exported.
Described mobile terminal is in the noise-reduction method conversed under headset mode, wherein, after the step A, B it
It is preceding also to include：
S, noise reduction process is carried out to the first electric signal U1 and the second electric signal U2.
Described mobile terminal is in the noise-reduction method conversed under headset mode, wherein, the preset value U0 for-
10dB。
Described mobile terminal is in the noise-reduction method conversed under headset mode, wherein, in the step A, obtain
Processed by peripheral circuit after first electric signal U1 and the second electric signal U2, subsequently into step S.
A kind of mobile terminal is in the noise reduction system conversed under headset mode, wherein, including：
Earphone pickup module, for when earphone is inserted into mobile terminal and is conversed, user being picked up by earphone Mike
Sound of speaking and ambient noise are simultaneously converted into the first electric signal U1；
Mobile terminal pickup module, for picking up ambient noise and user's sound of speaking by mobile terminal Mike and changing
Into the second electric signal U2；
Computing module, the absolute value U3 of the difference for calculating the first electric signal U1 and the second electric signal U2；
Comparison module, for the absolute value U3 and preset value U0 to be compared；
Optimization module, if for absolute value U3<Preset value U0, then compensated to absolute value U3, and absolute value U3 is compensated to pre-
After putting the size of value U0, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, absolute value U3 is directly exported.
Described mobile terminal is in the noise reduction system conversed under headset mode, wherein, also include：
Noise reduction module, for carrying out noise reduction process to the first electric signal U1 and the second electric signal U2.
Described mobile terminal is in the noise reduction system conversed under headset mode, wherein, the preset value U0 for-
10dB。
Described mobile terminal is in the noise reduction system conversed under headset mode, wherein, obtain the first electric signal U1
Processed by peripheral circuit with after the second electric signal U2, subsequently into noise reduction module.
A kind of mobile terminal, wherein, including the as above noise reduction system described in any one.
Beneficial effect：In the present invention, when earphone is inserted into mobile terminal and is conversed, using on mobile terminal
Mike collects noise and small part voice, and noise and voice are collected using the Mike on earphone, and both subtract each other, and is left voice number
According to, then proper treatment is done to voice, and send, it is achieved in noise reduction purpose, it is ensured that provide more preferable tonequality to other side.
Brief description of the drawings
Fig. 1 is the stream that a kind of mobile terminal of the invention is in the noise-reduction method preferred embodiment conversed under headset mode
Cheng Tu.
Fig. 2 is the knot that a kind of mobile terminal of the invention is in the noise reduction system preferred embodiment conversed under headset mode
Structure block diagram.
Specific embodiment
The present invention provides mobile terminal and its noise-reduction method, the system conversed under headset mode, to send out this
Bright purpose, technical scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.It should be appreciated that herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.
Fig. 1 is referred to, Fig. 1 is that the noise-reduction method that a kind of mobile terminal of the invention is conversed under headset mode is preferable
The flow chart of embodiment, as illustrated, it includes step：
S1, when earphone is inserted into mobile terminal and is conversed, by earphone Mike pick up user's sound of speaking and surrounding
Environmental noise is simultaneously converted into the first electric signal U1；Meanwhile, ambient noise is picked up by mobile terminal Mike and user speaks
Sound is simultaneously converted into the second electric signal U2；
The absolute value U3 of S2, the difference of calculating the first electric signal U1 and the second electric signal U2；
S3, the absolute value U3 and preset value U0 are compared；
If S4, absolute value U3<Preset value U0, then compensated to absolute value U3, and absolute value U3 is compensated into big to preset value U0
After small, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, absolute value U3 is directly exported.
The present invention utilizes mobile terminal（Such as mobile phone）On Mike collect noise, Mike on earphone collects noise and language
Sound, both subtract each other, and are left voice, then voice is done into proper treatment, send, and are achieved in noise reduction purpose, improve tonequality.
Specifically, voice is point sound source, when inserting earphone and conversing, mobile terminal from mouth relatively far away from, and earphone
Mike then from close to, therefore the voice that earphone Mike collects（User's sound of speaking, i.e. voice）Size is much larger than mobile terminal wheat
Gram voice for collecting.And be present in noise in the extensive environment in periphery, comparatively, by mobile terminal Mike and earphone Mike. more
The noise level difference for collecting is very little.
Based on above-mentioned principle, when being conversed under headset mode, collection surrounding enviroment are mainly responsible for by mobile terminal Mike and are made an uproar
Sound, earphone Mike collects environmental noise and voice, and the signal subtraction that two Mikes are collected, most noises are cancelled
Fall, remaining main component is exactly voice.
Although in fact, mobile terminal Mike is away from mouth, sub-fraction sound still also in fact can be collected,
So in two Mike's signal subtractions, that fraction voice that mobile terminal Mike collects actually also is canceled out.
During due to being conversed under headset mode, most users can put mobile terminal on the table, in pocket, or at one's side other
On fixed mesa, therefore the part voice that mobile terminal Mike collects is very little with respect to mouth farther out, even if being cancelled
Fall, remaining voice is substantially also enough.
Specifically, in the step S1, when earphone is inserted into mobile terminal and is conversed, by earphone wheat
Gram pickup user's sound of speaking and ambient noise and it is converted into the first electric signal U1.Will user's sound of speaking and surrounding ring
Total sound of border noise is converted into the first electric signal U1, in other words, two kinds of sound is contained in the first electric signal U1.
Meanwhile, ambient noise and user's sound of speaking are picked up by mobile terminal Mike and the second electric signal is converted into
U2.Will total sound of user's sound of speaking and ambient noise be converted into the second electric signal U2, in other words, the second telecommunications
Two kinds of sound are contained in number U2.
Further, after the step S1, before S2 also include：
S, noise reduction process is carried out to the first electric signal U1 and the second electric signal U2.
Noise reduction process is carried out to the first electric signal U1 and the second electric signal U2 in advance, some unnecessary signals are removed.
In the step S2, the absolute value U3 of the difference of the first electric signal U1 and the second electric signal U2 is calculated.
This step S2 is exactly to carry out signal subtraction treatment, due to containing user's sound of speaking and week in the first electric signal U1
Environmental noise is enclosed, least a portion of user's sound of speaking and ambient noise are contained in the second electric signal U2, directly subtract each other place
Reason, the voice signal after just being purified（That is user's sound of speaking）.
In the step S3, the absolute value U3 and preset value U0 is compared；The two size is judged, so that root
It is judged that as a result determining whether to carry out follow-up compensating operation.
In the step S4, if absolute value U3<Preset value U0, then compensated to absolute value U3, and absolute value U3 is mended
Repay to the size of preset value U0, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, directly exports absolute value
U3。
The reason for compensating operation be：Even if certain user converses under headset mode, still can habitually shifting
Dynamic terminal is got a little close to oneself body, such as be placed on front, and in this case, the sound that mobile terminal Mike collects is relative
Become big, so the voice for being disappeared may be also more, therefore remaining voice can there is a problem of it is not big enough.
Under the circumstances, the present invention can also be optimized after noise reduction is carried out to sound, will compensate treatment,
Compensation is to retransmiting away after in the same size with conventional sound of speaking, it is ensured that provide more preferable tonequality to partner.
If the absolute value U3 for calculating certainly has been above or equal to preset value U0, treatment is needed not compensate for, it is directly defeated
Go out absolute value U3.
Preset value U0 therein is conventional sound of speaking size, and for example preferably, the preset value U0 is -10dB.
Further, in the step S1, carried out by peripheral circuit after obtaining the first electric signal U1 and the second electric signal U2
Treatment, subsequently into step S.
Peripheral circuit therein is some conventional signal transactings.
Based on the above method, the present invention also provides a kind of mobile terminal and is in the noise reduction system conversed under headset mode
System, as shown in Fig. 2 it includes：
Earphone pickup module 100, for when earphone is inserted into mobile terminal and is conversed, being picked up by earphone Mike and being used
Family sound of speaking and ambient noise are simultaneously converted into the first electric signal U1；
Mobile terminal pickup module 200, for picking up ambient noise and user's sound of speaking simultaneously by mobile terminal Mike
It is converted into the second electric signal U2；
Computing module 300, the absolute value U3 of the difference for calculating the first electric signal U1 and the second electric signal U2；
Comparison module 400, for the absolute value U3 and preset value U0 to be compared；
Optimization module 500, if for absolute value U3<Preset value U0, then compensate to absolute value U3, by absolute value U3 compensate to
After the size of preset value U0, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, absolute value U3 is directly exported.
Further, the noise reduction system also includes：
Noise reduction module, for carrying out noise reduction process to the first electric signal U1 and the second electric signal U2.
Further, the preset value U0 is -10dB.
Further, processed by peripheral circuit after obtaining the first electric signal U1 and the second electric signal U2, subsequently into
Noise reduction module.
Ins and outs on above-mentioned module have been described in detail in method above, therefore repeat no more.
The present invention also provides a kind of mobile terminal, and it includes the noise reduction system described in as above any one.
One of ordinary skill in the art will appreciate that all or part of flow in above-described embodiment method, can be by
Computer program is completed come the hardware for instructing correlation, and described computer program can be stored in a computer read/write memory medium
In, program is upon execution, it may include the flow of the embodiment of above-mentioned each method.Storage medium therein can for magnetic disc, CD,
Read-only memory（ROM）Or random access memory（RAM）Deng.
In sum, in the present invention, when earphone is inserted into mobile terminal and is conversed, using on mobile terminal
Mike collects noise and small part voice, and noise and voice are collected using the Mike on earphone, and both subtract each other, and is left voice number
According to, then proper treatment is done to voice, and send, it is achieved in noise reduction purpose, it is ensured that provide more preferable tonequality to other side.
It should be appreciated that application of the invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or converted, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Shield scope.
Claims (9)
1. a kind of mobile terminal is in the noise-reduction method conversed under headset mode, it is characterised in that including step：
A, when earphone is inserted into mobile terminal and is conversed, by earphone Mike pick up user's sound of speaking and surrounding ring
Border noise is simultaneously converted into the first electric signal U1；Meanwhile, ambient noise and user's voice are picked up by mobile terminal Mike
Sound is simultaneously converted into the second electric signal U2；
The absolute value U3 of B, the difference of calculating the first electric signal U1 and the second electric signal U2；
C, the absolute value U3 and preset value U0 are compared；
If D, absolute value U3<Preset value U0, then compensate to absolute value U3, absolute value U3 is compensated to the size of preset value U0
Afterwards, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, absolute value U3 is directly exported.
2. mobile terminal according to claim 1 is in the noise-reduction method conversed under headset mode, it is characterised in that
Also include after the step A, before B：
S, noise reduction process is carried out to the first electric signal U1 and the second electric signal U2.
3. mobile terminal according to claim 1 is in the noise-reduction method conversed under headset mode, it is characterised in that
The preset value U0 is -10dB.
4. mobile terminal according to claim 2 is in the noise-reduction method conversed under headset mode, it is characterised in that
In the step A, processed by peripheral circuit after obtaining the first electric signal U1 and the second electric signal U2, subsequently into step
S。
5. a kind of mobile terminal is in the noise reduction system conversed under headset mode, it is characterised in that including：
Earphone pickup module, for when earphone is inserted into mobile terminal and is conversed, user being picked up by earphone Mike
Sound of speaking and ambient noise are simultaneously converted into the first electric signal U1；
Mobile terminal pickup module, for picking up ambient noise and user's sound of speaking by mobile terminal Mike and changing
Into the second electric signal U2；
Computing module, the absolute value U3 of the difference for calculating the first electric signal U1 and the second electric signal U2；
Comparison module, for the absolute value U3 and preset value U0 to be compared；
Optimization module, if for absolute value U3<Preset value U0, then compensated to absolute value U3, and absolute value U3 is compensated to pre-
After putting the size of value U0, the absolute value U3 after output compensation；If absolute value U3 >=preset value U0, absolute value U3 is directly exported.
6. mobile terminal according to claim 5 is in the noise reduction system conversed under headset mode, it is characterised in that
Also include：
Noise reduction module, for carrying out noise reduction process to the first electric signal U1 and the second electric signal U2.
7. mobile terminal according to claim 5 is in the noise reduction system conversed under headset mode, it is characterised in that
The preset value U0 is -10dB.
8. mobile terminal according to claim 5 is in the noise reduction system conversed under headset mode, it is characterised in that
Processed by peripheral circuit after obtaining the first electric signal U1 and the second electric signal U2, subsequently into noise reduction module.
9. a kind of mobile terminal, it is characterised in that including the noise reduction system as described in any one of claim 5 ~ 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071499.9A CN106887237A (en) | 2017-02-09 | 2017-02-09 | Mobile terminal and its noise-reduction method conversed under headset mode, system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071499.9A CN106887237A (en) | 2017-02-09 | 2017-02-09 | Mobile terminal and its noise-reduction method conversed under headset mode, system |
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| CN106887237A true CN106887237A (en) | 2017-06-23 |
Family
ID=59178905
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| CN201710071499.9A Pending CN106887237A (en) | 2017-02-09 | 2017-02-09 | Mobile terminal and its noise-reduction method conversed under headset mode, system |
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Cited By (4)
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| CN107396223A (en) * | 2017-07-31 | 2017-11-24 | 歌尔股份有限公司 | The up noise-reduction method of earphone |
| CN107705797A (en) * | 2017-10-18 | 2018-02-16 | 安徽质在智能科技有限公司 | A kind of intelligent mobile communication system and operating method |
| CN109089184A (en) * | 2018-03-28 | 2018-12-25 | 广州市神火科技有限公司 | A kind of wear-type pickup noise reduction communication earphone |
| CN113228706A (en) * | 2019-07-08 | 2021-08-06 | 松下知识产权经营株式会社 | Speaker system, audio processing device, audio processing method, and program |
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| CN107396223A (en) * | 2017-07-31 | 2017-11-24 | 歌尔股份有限公司 | The up noise-reduction method of earphone |
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Application publication date: 20170623 |