CN203761556U - Double-microphone noise reduction earphone - Google Patents
Double-microphone noise reduction earphone Download PDFInfo
- Publication number
- CN203761556U CN203761556U CN201320754777.8U CN201320754777U CN203761556U CN 203761556 U CN203761556 U CN 203761556U CN 201320754777 U CN201320754777 U CN 201320754777U CN 203761556 U CN203761556 U CN 203761556U
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- noise reduction
- microphone
- reduction microphone
- noise
- earmuff
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Abstract
The utility model relates to the earphone and particularly to the microphone noise reduction earphone. In order to solve the problem in the prior art that the noise reduction effect of the earphone is not ideal. The utility model discloses a double-microphone noise reduction earphone comprising a head band, a voice generation unit, an earshield and a lead. The double-microphone noise reduction earphone comprises a control circuit, an external noise reduction microphone and an internal noise reduction microphone. The external microphone is externally positioned on the earshield and the internal noise reduction microphone is positioned inside of the earshield. The input terminal of the external noise reduction microphone is connected to the control circuit; the output terminal of the internal noise reduction microphone is connected to the control circuit; and the output terminal of the control circuit is connected to the voice generation unit. The double-microphone noise reduction earphone achieves a better noise reduction effect by reducing the noise both inside the earshield and outside the earshield.
Description
Technical field
The utility model relates to earphone, relates in particular to microphone denoising earphone.
Background technology
Conventional earphone is mainly made up of four parts: headband, phonation unit, earmuff and lead-in wire; Headband is for earmuff is fixed on to ear, and lead-in wire is for being transported to phonation unit by audio signal from sound equipment, and phonation unit is arranged in earmuff.Existing earphone has decrease of noise functions conventionally, in left and right, two earmuff outsides respectively arrange a microphone collection sound sample, when external noise is comparatively various and changeable time, each earmuff only has a sampling microphone of collecting whole noises, certainly will cause the direction of sampled noise narrow and not meticulous accurate, thereby cannot reach the noise reduction of high-quality.
Summary of the invention
In order to solve the undesirable problem of existing earphone noise reduction, the utility model provides a kind of dual microphone denoising earphone, by reducing the noise of earmuff internal environment and external environment condition, realizes noise reduction better.
In order to achieve the above object, the utility model adopts following technical proposals:
A kind of dual microphone denoising earphone, comprises headband, phonation unit, earmuff and lead-in wire, it is characterized in that, described earphone also comprises control circuit, outside noise reduction microphone and inner noise reduction microphone; At outside noise reduction microphone described in earmuff outer setting, described inner noise reduction microphone is set in earmuff inside; The output of described outside noise reduction microphone accesses described control circuit; The output of described inner noise reduction microphone accesses described control circuit; The output access phonation unit of described control circuit; Outside noise reduction microphone is for gathering the noise audio signal of earmuff outside.Inner noise reduction microphone is for gathering the noise audio signal of earmuff inside.
The noise audio signal of outside noise reduction microphone collection is called audio frequency 1, and the noise audio signal of inner noise reduction microphone collection is called audio frequency 2.Audio frequency 1 and audio frequency 2 input control circuit respectively, control circuit receives and calculates the Wave data of the mixed noise sound wave of sound wave of audio frequency 1 and audio frequency 2, and these data are transported to phonation unit.The data that invention unit provides according to control circuit, produce sound wave identical with sound wave amplitude, single spin-echo, carry out automotive resistance and process noise.Like this, the sound that phonation unit sends can farthest be avoided the interference of ambient noise, and people can be listened attentively in relatively quiet environment, and the clear sound of hearing, tonequality grace.
Further, described outside noise reduction microphone and described inner noise reduction microphone gather respectively rightabout noise audio signal.
Further, described phonation unit is fidelity high pitch loud-speaker.
Further, described control circuit connects external power source.Described power supply can be battery, can be also the plug that can be connected with socket.
Further, the environment low-frequency noise that described outside noise reduction microphone and inner noise reduction microphone are 100-500HZ for collection frequency.
Further, described outside noise reduction microphone is arranged on earmuff, collects the device surface of noise outside earmuff; Described inner noise reduction microphone is arranged on earmuff inside, the device surface of collecting noise to direction and the device of the collection noise of described outside noise reduction microphone towards opposite direction; And described outside noise reduction microphone and inner noise reduction microphone are installed in the below of phonation unit; Described voice unit (VU) is relative with ear level.
Further, the device surface of the collection noise of described outside noise reduction microphone to direction and the angle of the horizontal direction at ear place be 30-60 °.
Further, the device surface of the collection noise of described outside noise reduction microphone to direction and the angle of the horizontal direction at ear place be 45 °.
Compared with prior art, the present invention adopts dual microphone sampling, adopts dual mode to remove noise reduction, has effectively improved sensitivity and the accuracy of noise samples, thereby can effectively reduce the inside and outside ambient noise of earmuff; The inside and outside microphone division of labor of earmuff gathers the sound wave of opposite direction, thereby reach a more sound sample collection effect for high-quality, and by control circuit and phonation unit prepare with true noise contrary, sound wave that amplitude is equal, carry out automotive resistance, thereby reach noise reduction better.Allowing user can obtain better music entertainment enjoys, and solve the various little puzzlements about noise in daily life (as airport, industrial noise) for user, similarly be unexpected from a noisy environment, transferred to a very quietly environment.
The principle of noise reduction of the dual microphone denoising earphone that the utility model provides is summarized as follows: first detect by two microphones that are installed on respectively inside and outside earmuff the environment low-frequency noise (100-500HZ) that ear is heard, noise signal is reached to control circuit, control circuit is through instant computing, launch contrary with noise phase by high-fidelity loudspeaker, the sound wave that amplitude is identical is offset noise, the low-frequency noise of importing in people's ear is significantly reduced, make acoustic environments quieter.
Traditional earphone, not outer, built-in microphone system, only have single inner or outer microphone, reaches at most the noise reducing function of 20db.And the dual microphone denoising earphone that the utility model provides has following beneficial effect:
1, in the situation that environment 250Hz noise reaches 60 decibels (db), people can feel sick, and in the time using the earphone of this technology to start decrease of noise functions, can effectively reduce the noise of external 25db-30db, mould a comparatively quietly atmosphere.
2, practical, can brilliance effectively reduce, offset the regular and irregular noise of 100Hz-500Hz.
Brief description of the drawings
The structural representation of the microphone denoising earphone that Fig. 1 provides for the utility model;
Fig. 2 is the sound wave schematic diagram of noise treatment process;
Fig. 3 is the sound wave schematic diagram after noise treatment.
Embodiment
Further illustrate in conjunction with Figure of description the technical scheme that the utility model provides below by embodiment.
Embodiment 1
As shown in Figure 1, the dual microphone denoising earphone that the utility model provides, comprises headband, phonation unit 5, earmuff 10 and lead-in wire, and described earphone also comprises control circuit 3, outside noise reduction microphone 2 and inner noise reduction microphone 1; At outside noise reduction microphone 2 described in earmuff 10 outer setting, in earmuff 10 inside, described inner noise reduction microphone 1 is set; The output of described outside noise reduction microphone 1 accesses described control circuit 3; The output of described inner noise reduction microphone 2 accesses described control circuit 3; The output access phonation unit 5 of described control circuit 3.
Described outside noise reduction microphone 2 gathers respectively rightabout noise audio signal with described inner noise reduction microphone 1.
Described phonation unit 5 is fidelity high pitch loud-speaker.
Described control circuit 3 connects external power source 4.
As shown in Figures 2 and 3, in Fig. 2, A represents the sound wave of environment Middle and low frequency noise, B represents the sound wave of the inverse noise that control circuit calculates, the dual microphone denoising earphone that the present embodiment provides, prepare contrary with true noise phase by control circuit and phonation unit, the sound wave (abbreviation inverse noise) that amplitude is identical, has offset environmental noise, thereby has reached noise reduction better.
Embodiment 2
As shown in Figure 1, the dual microphone denoising earphone that the utility model provides, comprises headband, fidelity high pitch loud-speaker 5, earmuff 10 and lead-in wire, and described earphone also comprises control circuit 3, outside noise reduction microphone 2 and inner noise reduction microphone 1; At outside noise reduction microphone 2 described in earmuff 10 outer setting, in earmuff 10 inside, described inner noise reduction microphone 1 is set; The output of described outside noise reduction microphone 1 accesses described control circuit 3; The output of described inner noise reduction microphone 2 accesses described control circuit 3; The output access fidelity high pitch loud-speaker 5 of described control circuit 3.
Described outside noise reduction microphone 2 gathers respectively rightabout noise audio signal with described inner noise reduction microphone 1.
Described control circuit 3 connects external power source 4.
Further, 1) core material of product: select the high loudspeaker of magnetic fine copper coil composition, the chip inlet of the high-power power amplification of low noise low-voltage protected of composite membrane.Wherein, outside noise reduction microphone and inner noise reduction microphone (division of labor gathers the sound wave of both forward and reverse directions), select chip inlet, is with anti-interference element, is made up of radioshielding structure.
2) earmuff product is selected albumen leather sheath, and inertia acoustical cotton is as filling and auxiliary material, and more auxiliary noise reduction, improves the comfort level using.
3) earphone product casing adopts import APS material, PVC material, environmental protection electronic material composition, and product is more sturdy and durable.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and is all encompassed in the scope of the claims of the present invention.
Claims (8)
1. a dual microphone denoising earphone, comprises headband, phonation unit, earmuff and lead-in wire, it is characterized in that, described earphone also comprises control circuit, outside noise reduction microphone and inner noise reduction microphone; At outside noise reduction microphone described in earmuff outer setting, described inner noise reduction microphone is set in earmuff inside; The output of described outside noise reduction microphone accesses described control circuit; The output of described inner noise reduction microphone accesses described control circuit; The output access phonation unit of described control circuit; Described outside noise reduction microphone is for gathering the noise audio signal of earmuff outside, and described inner noise reduction microphone is for gathering the noise audio signal of earmuff inside.
2. dual microphone denoising earphone according to claim 1, is characterized in that, described outside noise reduction microphone and described inner noise reduction microphone gather respectively rightabout noise audio signal.
3. dual microphone denoising earphone according to claim 1, is characterized in that, described phonation unit is fidelity high pitch loud-speaker.
4. dual microphone denoising earphone according to claim 1, is characterized in that, described control circuit connects external power source.
5. dual microphone denoising earphone according to claim 1, is characterized in that, the environment low-frequency noise that described outside noise reduction microphone and inner noise reduction microphone are 100-500HZ for collection frequency.
6. dual microphone denoising earphone according to claim 1, is characterized in that, described outside noise reduction microphone is arranged on earmuff, collects the device surface of noise outside earmuff; Described inner noise reduction microphone is arranged on earmuff inside, the device surface of collecting noise to direction and the device of the collection noise of described outside noise reduction microphone towards opposite direction; And described outside noise reduction microphone and inner noise reduction microphone are installed in the below of phonation unit; Described voice unit (VU) is relative with ear level.
7. dual microphone denoising earphone according to claim 6, is characterized in that, the device surface of the collection noise of described outside noise reduction microphone to direction and the angle of the horizontal direction at ear place be 30-60 °.
8. dual microphone denoising earphone according to claim 6, is characterized in that, the device surface of the collection noise of described outside noise reduction microphone to direction and the angle of the horizontal direction at ear place be 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320754777.8U CN203761556U (en) | 2013-11-25 | 2013-11-25 | Double-microphone noise reduction earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320754777.8U CN203761556U (en) | 2013-11-25 | 2013-11-25 | Double-microphone noise reduction earphone |
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| Publication Number | Publication Date |
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| CN203761556U true CN203761556U (en) | 2014-08-06 |
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| CN201320754777.8U Expired - Fee Related CN203761556U (en) | 2013-11-25 | 2013-11-25 | Double-microphone noise reduction earphone |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104394490A (en) * | 2014-10-30 | 2015-03-04 | 中名(东莞)电子有限公司 | Ear headphone with noise reduction effect |
| CN105187968A (en) * | 2015-09-02 | 2015-12-23 | 深圳航天金悦通科技有限公司 | Conversation earphone |
| CN106499224A (en) * | 2016-08-20 | 2017-03-15 | 中声科技（北京）有限公司 | A kind of active noise reduction telephone booth for eliminating ambient noise |
| CN106510350A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Headrest for actively eliminating noise |
| CN106535051A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Mattress for active noise cancellation |
| CN106535050A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Active noise reduction module eliminating automobile noise |
| CN106658293A (en) * | 2016-08-20 | 2017-05-10 | 中声科技（北京）有限公司 | refrigerator for automatically eliminating noise |
| CN106740332A (en) * | 2016-08-20 | 2017-05-31 | 中声科技（北京）有限公司 | A kind of active eliminates the automobile headrest of in-car noise |
| CN106782488A (en) * | 2016-08-20 | 2017-05-31 | 中声科技（北京）有限公司 | The washing machine that a kind of active abates the noise |
| CN107343235A (en) * | 2016-08-20 | 2017-11-10 | 中声科技（北京）有限公司 | It is a kind of can plug earphone cord active noise reduction earphone |
| CN108235818A (en) * | 2018-01-05 | 2018-06-29 | 万魔声学科技有限公司 | Active denoising method, equipment and earphone |
| WO2018149073A1 (en) * | 2017-02-14 | 2018-08-23 | 歌尔股份有限公司 | Noise-cancelling headphone and electronic device |
| CN109348322A (en) * | 2018-09-07 | 2019-02-15 | 歌尔科技有限公司 | A kind of radix saposhnikoviae method for de-noising, feed-forward noise reduction system, earphone and storage medium |
| CN110738978A (en) * | 2018-07-20 | 2020-01-31 | 卢笛 | noise eliminator for study or office |
| CN113573200A (en) * | 2021-08-13 | 2021-10-29 | 惠州市欧凡实业有限公司 | Noise reduction earphone capable of actively balancing ear pressure and active noise reduction method |
| US11683643B2 (en) | 2007-05-04 | 2023-06-20 | Staton Techiya Llc | Method and device for in ear canal echo suppression |
| US11856375B2 (en) | 2007-05-04 | 2023-12-26 | Staton Techiya Llc | Method and device for in-ear echo suppression |
-
2013
- 2013-11-25 CN CN201320754777.8U patent/CN203761556U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11856375B2 (en) | 2007-05-04 | 2023-12-26 | Staton Techiya Llc | Method and device for in-ear echo suppression |
| US11683643B2 (en) | 2007-05-04 | 2023-06-20 | Staton Techiya Llc | Method and device for in ear canal echo suppression |
| CN104394490A (en) * | 2014-10-30 | 2015-03-04 | 中名(东莞)电子有限公司 | Ear headphone with noise reduction effect |
| CN105187968A (en) * | 2015-09-02 | 2015-12-23 | 深圳航天金悦通科技有限公司 | Conversation earphone |
| CN106782488A (en) * | 2016-08-20 | 2017-05-31 | 中声科技（北京）有限公司 | The washing machine that a kind of active abates the noise |
| CN106510350A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Headrest for actively eliminating noise |
| CN106658293A (en) * | 2016-08-20 | 2017-05-10 | 中声科技（北京）有限公司 | refrigerator for automatically eliminating noise |
| CN106740332A (en) * | 2016-08-20 | 2017-05-31 | 中声科技（北京）有限公司 | A kind of active eliminates the automobile headrest of in-car noise |
| CN106535051A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Mattress for active noise cancellation |
| CN107343235A (en) * | 2016-08-20 | 2017-11-10 | 中声科技（北京）有限公司 | It is a kind of can plug earphone cord active noise reduction earphone |
| CN106499224A (en) * | 2016-08-20 | 2017-03-15 | 中声科技（北京）有限公司 | A kind of active noise reduction telephone booth for eliminating ambient noise |
| CN106535050A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Active noise reduction module eliminating automobile noise |
| WO2018149073A1 (en) * | 2017-02-14 | 2018-08-23 | 歌尔股份有限公司 | Noise-cancelling headphone and electronic device |
| CN108235818B (en) * | 2018-01-05 | 2020-02-21 | 万魔声学科技有限公司 | Active noise reduction method and device and earphone |
| CN108235818A (en) * | 2018-01-05 | 2018-06-29 | 万魔声学科技有限公司 | Active denoising method, equipment and earphone |
| CN110738978A (en) * | 2018-07-20 | 2020-01-31 | 卢笛 | noise eliminator for study or office |
| CN109348322A (en) * | 2018-09-07 | 2019-02-15 | 歌尔科技有限公司 | A kind of radix saposhnikoviae method for de-noising, feed-forward noise reduction system, earphone and storage medium |
| CN113573200A (en) * | 2021-08-13 | 2021-10-29 | 惠州市欧凡实业有限公司 | Noise reduction earphone capable of actively balancing ear pressure and active noise reduction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160930 Address after: 517099, D building, Heyuan Foreign Economic Development Zone, No. 205 Heyuan Avenue, South Heyuan Road, Guangdong, China Patentee after: HEYUAN YUAN FENG ELECTRONIC CO.,LTD. Address before: Hongkong Hongye Chinese Yuen Street No. 27 Lai Yuen Long new center room 903-904 Patentee before: FUNG SHING Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20211125 |