CN102340565A - De-noising assembly - Google Patents
De-noising assembly Download PDFInfo
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- CN102340565A CN102340565A CN2011101898916A CN201110189891A CN102340565A CN 102340565 A CN102340565 A CN 102340565A CN 2011101898916 A CN2011101898916 A CN 2011101898916A CN 201110189891 A CN201110189891 A CN 201110189891A CN 102340565 A CN102340565 A CN 102340565A
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Abstract
The invention provides a de-noising assembly comprising two microphones, a de-noising treatment unit respectively and electrically connected with the microphones, a signal amplification unit used for amplifying signals and a low-pass filter unit electrically connected with the signal amplification unit. The de-noising treatment unit comprises a delay treatment unit used for delaying signals and a subtractor used for overlapping signals. The low-pass filter unit is provided with a first low-pass filter module and a second low-pass filter module, wherein the first and the second low-pass filter modules are respectively and electrically connected with the signal amplification unit. The de-noising assembly is further provided with a first switch and a second switch. Compared with related technologies, the de-noising assembly disclosed by the invention has consistent frequency response to the same voice signal under different call modes and has good call quality.
Description
[technical field]
The present invention relates to a kind of de-noising assembly, relate in particular to a kind of de-noising assembly that is used in the portable communications product.
[background technology]
Development along with wireless telecommunications; Global Mobile Phone Users is more and more, and the user not only is satisfied with conversation to the requirement of mobile phone, and wants high-quality communication effect can be provided; Especially at present the development of mobile multimedia technology; The speech quality of mobile phone becomes more important, and therefore, the de-noising assembly that is used in the relevant communication product such as mobile phone is developed rapidly.
The device assembly that disappears of correlation technique comprises microphone, the denoising Processing unit that is electrically connected with said microphone and the filter unit that is electrically connected with said denoising Processing unit.
With the mobile phone is example, and mobile phone communication has two kinds of patterns---de-noising answer mode and direct mode operation (hands-free mode).When people use the mobile phone of the de-noising assembly that has used correlation technique; If use the de-noising answer mode; Said de-noising assembly has carried out exporting the de-noising voice signal after the dual microphone denoising Processing to audio signal; Voice signal can be decayed after the de-noising that obtains this moment, therefore voice signal after the de-noising is carried out the frequency response curve compensation through filter unit, makes not sounding decay of voice signal after the de-noising like this.This moment, the gain coefficient and the compensating for frequency response of filter unit were promptly set constant.
Yet; The line control earphone assembly of correlation technique only is provided with a filter unit, and when using direct mode operation, said de-noising assembly can not carry out denoising Processing to voice signal; Single microphone is directly exported after gathering voice signal, promptly can not have the problem of signal attenuation.But also passed through this filter unit during voice signal output, at this moment made it to decay on the contrary.
Such as audio signal in the frequency response at 500Hz, 1kHz, 2kHz place all be-40dB respectively, can become through after the dual microphone denoising Processing-80dB ,-60dB ,-40dB, this just must use low pass filter it is compensated for as-40dB ,-40dB ,-40dB.Be equivalent at the 500Hz place frequency response improved 40dB, 1kHz has improved 20dB in the place.But the direct mode operation of single microphone output also must be through this filter, then its output just become 0dB ,-20dB ,-40dB.So when having used the mobile phone of the de-noising assembly of correlation technique under two kinds of different conditions, to converse, the frequency response of the voice signal of its output is different, and then draws and influenced speech quality.
Therefore, being necessary to propose a kind of new de-noising assembly in fact addresses the above problem.
[summary of the invention]
The technical problem that the present invention need solve provide a kind of under different call modes to the consistent de-noising assembly of the frequency response of same voice signal.
According to above-mentioned technical problem; Designed a kind of de-noising assembly; Its objective is such realization: a kind of de-noising assembly, the denoising Processing unit that it comprises two microphones, be electrically connected respectively with said microphone, the low-pass filter unit that signal is carried out the amplifying signal amplifying unit and is electrically connected with said signal amplification unit.Said denoising Processing unit comprises delay processing unit that makes signal delay and the subtrator that makes the signal stack.Wherein, said low-pass filter unit is provided with first low-pass filtering module and second low-pass filtering module, and said first low-pass filtering module and said second low-pass filtering module are electrically connected with said signal amplification unit respectively.Said de-noising assembly also is provided with first switch and second switch, and said first switch is connected between said delay processing unit and the said subtrator, and said second switch is serially connected between said signal amplification unit and the said low-pass filter unit.
Preferably, said second switch is a group selection switch.
Compare with correlation technique, de-noising assembly of the present invention frequency response to same voice signal under different call modes is consistent, and speech quality is good.
[description of drawings]
Fig. 1 is the theory diagram of de-noising assembly of the present invention.
Fig. 2 is de-noising assembly of the present invention frequency response curve figure to same voice signal under two kinds of different call modes.
[embodiment]
Below in conjunction with accompanying drawing and execution mode the present invention is described further.
As shown in Figure 1, a kind of de-noising assembly 1, the denoising Processing unit 3 that it comprises two microphones 2, be electrically connected respectively with microphone 2, the low-pass filter unit 5 that signal is carried out amplifying signal amplifying unit 4 and is electrically connected with signal amplification unit 4.Denoising Processing unit 3 comprises delay processing unit 31 that makes signal delay and the subtrator 32 that makes the signal stack.Wherein, low-pass filter unit 5 is provided with first low-pass filtering module 51 and second low-pass filtering module, 52, the first low-pass filtering modules 51 and second low-pass filtering module 52 and is electrically connected with signal amplification unit 4 respectively.
De-noising assembly 1 also is provided with first switch 33 and is connected between delay processing unit 31 and the subtrator 32 with second switch 34, the first switches 33, and second switch 34 is serially connected between signal amplification unit 4 and the low-pass filter unit 5.More excellent, second switch 34 is a group selection switch.Be such in this execution mode; Selector switch can selectivity be connected signal amplification unit 4 respectively with first low-pass filtering module 51 and second low-pass filtering module 52; Then it breaks off with second low-pass filtering module 52 when selecting switch that signal amplification unit 4 is connected with first low-pass filtering module 51, then itself and 51 disconnections of first low-pass filtering module when selecting switch with signal amplification unit 4 and 52 connections of second low-pass filtering module.In fact, second switch 34 also can be two single knife switches of connecting with first low-pass filtering module 51 and second low-pass filtering module 52 respectively, and this also is feasible, but its principle is all the same.
In this execution mode, be example, de-noising assembly 1 of the present invention is used in the mobile phone with the mobile phone, concrete, when handset-selected when conversing with the de-noising answer mode, first switch, 33 closures, the second switch 34 and first low-pass filtering module 51 are connected.Audio signal is to be input to denoising Processing unit 3 after first microphone 21 and second microphone 22 are gathered to carry out denoising Processing through 2 microphones.Wherein, The audio signal of gathering with second microphone 22 after the delayed audio signal unit 31 that first microphone 21 collects is handled is input to jointly and obtains subtrator 32; Obtain voice signal after the de-noising, voice signal amplifies through signal amplification unit 4 after the de-noising, obtains amplifying the back voice signal; Amplify the back voice signal and be input to first low-pass filtering module 51, it is carried out exporting behind the compensating for frequency response through first low-pass filtering module 51.
When handset-selected when conversing with hands-free mode, press Hands-free key after, first switch 33 breaks off, second switch 34 and 52 connections of second low-pass filtering module.At this moment, first microphone 21 is not worked, and the audio signal of having only second microphone 22 to collect can be exported.The audio signal that second microphone 22 collects is input to second low-pass filtering module 52, exports after to its Filtering Processing of advancing through second low-pass filtering module 52.
At this moment, the frequency response to same audio signal under two kinds of call modes is consistent, and frequency response curve is as shown in Figure 2, and wherein, curve a is the frequency response curve under the hands-free answer mode, and curve b is the frequency response curve under the de-noising answer mode.Certainly, the gain coefficient of first low-pass filtering module 51 is different with the setting of penalty coefficient with the gain coefficient of second low-pass filtering module 52 and the setting of penalty coefficient, but coefficient is separately all fixed.
Compare with correlation technique; De-noising assembly of the present invention has been set up filtration module and selector switch; Under different call modes, select to connect the output of different filtering circuit through selector switch; Thereby make that said de-noising assembly is consistent to the frequency response curve of same audio signal under different call modes, and then improved speech quality.
Above-described only is execution mode of the present invention, should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the invention design, can also make improvement, but these all belongs to protection scope of the present invention.
Claims (2)
1. de-noising assembly; The denoising Processing unit that it comprises two microphones, be electrically connected respectively with said microphone, the low-pass filter unit that signal is carried out the amplifying signal amplifying unit and is electrically connected with said signal amplification unit; Said denoising Processing unit comprises delay processing unit that makes signal delay and the subtrator that makes the signal stack; It is characterized in that: said low-pass filter unit is provided with first low-pass filtering module and second low-pass filtering module; Said first low-pass filtering module and said second low-pass filtering module are electrically connected with said signal amplification unit respectively; Said de-noising assembly also is provided with first switch and second switch, and said first switch is connected between said delay processing unit and the said subtrator, and said second switch is connected between said signal amplification unit and the said low-pass filter unit.
2. de-noising assembly according to claim 1 is characterized in that: said second switch is a group selection switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189891.6A CN102340565B (en) | 2011-07-07 | 2011-07-07 | De-noising assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110189891.6A CN102340565B (en) | 2011-07-07 | 2011-07-07 | De-noising assembly |
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| Publication Number | Publication Date |
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| CN102340565A true CN102340565A (en) | 2012-02-01 |
| CN102340565B CN102340565B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110189891.6A Expired - Fee Related CN102340565B (en) | 2011-07-07 | 2011-07-07 | De-noising assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN109450237A (en) * | 2018-10-31 | 2019-03-08 | Oppo广东移动通信有限公司 | Signal processing circuit, radio circuit, communication equipment and signal processing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030038069A (en) * | 2001-11-08 | 2003-05-16 | 엘지전자 주식회사 | noise elimination system of the telephone handset and controlling method therefore |
| CN1798181A (en) * | 2004-12-29 | 2006-07-05 | 乐金电子(中国)研究开发中心有限公司 | Terminal denoise device for voice communication |
| CN101848288A (en) * | 2010-04-19 | 2010-09-29 | 北京东微世纪科技有限公司 | Simulation noise reduction system and method for microphone |
| CN101959099A (en) * | 2010-04-12 | 2011-01-26 | 瑞声声学科技(深圳)有限公司 | Directional microphone device |
| CN101989431A (en) * | 2009-07-31 | 2011-03-23 | 深圳富泰宏精密工业有限公司 | Device and method for eliminating noise |
-
2011
- 2011-07-07 CN CN201110189891.6A patent/CN102340565B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030038069A (en) * | 2001-11-08 | 2003-05-16 | 엘지전자 주식회사 | noise elimination system of the telephone handset and controlling method therefore |
| CN1798181A (en) * | 2004-12-29 | 2006-07-05 | 乐金电子(中国)研究开发中心有限公司 | Terminal denoise device for voice communication |
| CN101989431A (en) * | 2009-07-31 | 2011-03-23 | 深圳富泰宏精密工业有限公司 | Device and method for eliminating noise |
| CN101959099A (en) * | 2010-04-12 | 2011-01-26 | 瑞声声学科技(深圳)有限公司 | Directional microphone device |
| CN101848288A (en) * | 2010-04-19 | 2010-09-29 | 北京东微世纪科技有限公司 | Simulation noise reduction system and method for microphone |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN107705797B (en) * | 2017-10-18 | 2020-12-22 | 四川蜀天信息技术有限公司 | Intelligent mobile communication system and operation method |
| CN109450237A (en) * | 2018-10-31 | 2019-03-08 | Oppo广东移动通信有限公司 | Signal processing circuit, radio circuit, communication equipment and signal processing method |
| CN109450237B (en) * | 2018-10-31 | 2020-07-07 | Oppo广东移动通信有限公司 | Signal processing circuit, radio frequency circuit, communication apparatus, and signal processing method |
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| CN102340565B (en) | 2014-02-26 |
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Address after: 518057 Nanshan District hi tech Industrial Park, Shenzhen, North West New West Road, No. Rui sound technology building, No. 18 Co-patentee after: AAC TECHNOLOGIES (NANJING) Co.,Ltd. Patentee after: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) Co.,Ltd. Co-patentee after: AAC Acoustic Technologies (Changzhou) Co.,Ltd. Address before: 518057 Nanshan District hi tech Industrial Park, Shenzhen, North West New West Road, No. Rui sound technology building, No. 18 Co-patentee before: AAC Acoustic Technology Research Development (Nanjing) Co.,Ltd. Patentee before: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) Co.,Ltd. Co-patentee before: AAC Acoustic Technologies (Changzhou) Co.,Ltd. |
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Effective date of registration: 20170602 Address after: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8 Co-patentee after: AAC TECHNOLOGIES (NANJING) Co.,Ltd. Patentee after: AAC TECHNOLOGIES Pte. Ltd. Co-patentee after: AAC Acoustic Technologies (Changzhou) Co.,Ltd. Address before: 518057 Nanshan District hi tech Industrial Park, Shenzhen, North West New West Road, No. Rui sound technology building, No. 18 Co-patentee before: AAC TECHNOLOGIES (NANJING) Co.,Ltd. Patentee before: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) Co.,Ltd. Co-patentee before: AAC Acoustic Technologies (Changzhou) Co.,Ltd. |
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Granted publication date: 20140226 |