CN105263081A - Feedback-suppressed earplug device - Google Patents
Feedback-suppressed earplug device Download PDFInfo
- Publication number
- CN105263081A CN105263081A CN201510778631.0A CN201510778631A CN105263081A CN 105263081 A CN105263081 A CN 105263081A CN 201510778631 A CN201510778631 A CN 201510778631A CN 105263081 A CN105263081 A CN 105263081A
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- CN
- China
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- loudspeaker
- sound
- earplug
- mike
- feedback function
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Abstract
The invention provides a feedback-suppressed earplug device. The device comprises a hollow earplug shell, a loudspeaker 1 arranged in the earplug shell, a microphone arranged in the earplug shell, and a loudspeaker 2 arranged in the earplug shell. The sound outlet hole of the loudspeaker 1 is arranged facing the sound outlet end of the earplug device. The microphone is provided with a sound pickup hole used for receiving the sound transmitted from an auditory meatus. The loudspeaker 2 is used for outputting sounds to the microphone. According to the technical scheme of the invention, the sound pickup hole of the microphone receives the feedback sound generated by the loudspeaker 1 via the auditory meatus. At the same time, the output sound of the AD-hoc loudspeaker 2 is picked up by the other side of the microphone. In this way, the sound waves of two sounds, namely the feedback sound and the output sound, cancel each other out. As a result, the occurrence of the feedback phenomenon is suppressed.
Description
Technical field
The present invention relates to external audio frequency input/output device (headset) that is mobile or fixed telecommunication terminal, particularly relate to a kind of earplug internal structure and institute of utilizing and use the characteristic of electro-acoustic component with the earplug arrangement of effective sound-inhibiting back coupling phenomenon.
Background technology
Noise reduction headset is in the market varied, divides can be divided into following two kinds according to principle of noise reduction:
A. passive noise reducing type: surround ear mainly through using acoustic material and form enclosure space or adopt the acoustic materials such as silica gel earplugs to completely cut off duct to stop outside noise.Because noise is not through the process of Dolby circuit chip, generally voice and low-frequency noise can only be intercepted.This kind of headset uses mechanical noise reduction, is usually furnished with the cover of thickening, is mostly wear-type, and volume is large and heavy.
B. active noise reduction type: obtain ambient noise by Mike, produces the anti-phase sound wave equal with ambient noise by active noise reduction chip and broadcasts in loudspeaker together with the sound that will broadcast, thus neutralized by noise, realize noise reduction.This headset need be furnished with complicated active noise reduction circuit and need the driving of power supply.
When headset being applied to fixing or communication terminal (such as mobile phone), sound conditions becomes more complicated.Now, headset not only needs the task of bearing playing sound, also needs to bear the task of gathering the call sound that user sends.
Existing a kind of active noise reduction techniques being applied to communicating terminal, itself and active noise reduction headset are similar, noise reduction chip controls of taking the initiative, and use the diamylose gram sampling being arranged on communicating terminal diverse location to carry out noise reduction.Mike A obtains the call sound of environmental noise and people, and Mike B only obtains environmental noise.For the environmental noise part that Mike B obtains, noise reduction chip will be identical with amplitude with frequency noise, and the superimposed sound to Mike A acquisition of the sine wave that phase is 180 degree, just can offset noise, collects comparatively pure call sound.And the major defect of this technology is that noise reduction is not obvious.Mike A and Mike B are difficult to the same call sound of collection respectively or noise as desired usually, but all collect the call and the noise mixing sound that are difficult to differentiation mixed in together, make noise reduction undesirable, particularly when the intensity of noise is larger, two Mikes only collect huge environmental noise especially, and the covered to such an extent as to noise reduction chip of call sound cannot effectively work.
Although existing part communication terminal equipment has active noise reduction function, its noise reduction capability reaches far away the expectation of people.Thus, as further improvement, occur a kind ofly Mike and loudspeaker being built in simultaneously the earplug arrangement that can carry out duplex signaling in earphone earplug.Its earplug is furnished with the sizable earplug set with duct, and be provided with damping material in earplug housing, can effective sealing duct after filling in duct, isolated environment noise enters duct, and the built-in Mike of earplug can pick up the sound of speaking importing duct from oral cavity in quiet duct.This earplug arrangement type of service belongs to passive noise reducing type, but principle of noise reduction belongs to active noise reduction type.In addition, when communicating terminal plugged earphone uses, just shield the decrease of noise functions of itself, now this noise reduction earplug arrangement can be used as the use of external denoising device.
But, loudspeaker and Mike be integrated in slight earplug put into duct use time, the small space in duct is in together due to loudspeaker and Mike, voice signal can be made in duplex communication system to form feedback, namely after the sound that loudspeaker spread out of enters duct, have partial sound and be fed again the pickup hole entering into Mike, this creates the terminal back coupling phenomenon.This back coupling phenomenon can form interference tones, causes interference to the collection of sound of speaking, and when horn volume is larger, even more seriously can affect communication effect.
Namely the present invention is that a kind of being mainly suppresses to feedback phenomenon and the earplug arrangement that designs.
Summary of the invention
The present invention aims to provide a kind of earplug arrangement with suppression feedback function, to solve the existence back coupling phenomenon of duplex signaling earplug of the prior art, disturbs the collection of sound of speaking, affects the problem of communication effect.
To achieve these goals, the invention provides a kind of earplug arrangement with suppression feedback function, comprise, the earplug housing of hollow; Be arranged on the loudspeaker one in earplug housing, the sender of loudspeaker one goes out sound end towards earplug arrangement; Be arranged on the Mike in earplug housing, Mike is provided with the pickup hole for receiving the sound that duct transmits; Be arranged on the loudspeaker two in earplug housing, loudspeaker two are to Mike's output sound.
Further, earplug enclosure interior fills damping material.
Further, in damping material, have cavity, Mike is provided with the rear pickup hole of the sound for receiving loudspeaker two, and the sound face that goes out of rear pickup hole and loudspeaker two is in cavity together.
Further, loudspeaker two are set to be integrated in the rear portion of loudspeaker one and back-to-back arrangement.
Further, sound is sent to duct through sound channel A by loudspeaker one.
Further, to be picked up by sound channel B for the pickup hole that receives the sound that duct transmits and pass by air vibration sound of speaking of coming in duct.
Further, the output volume of loudspeaker two is 16% of loudspeaker one, and loudspeaker two and loudspeaker one export simultaneously.
Further, loudspeaker one and loudspeaker two are moving-iron type unit.
Further, Mike is differential Mike.
Further, the pickup hole for receiving the sound that duct transmits is set to one or several.
Apply technical scheme of the present invention, the back coupling sound that produces via duct of pickup hole pickup loudspeaker one of Mike, the another side of Mike picks up the output sound of ad hoc loudspeaker two simultaneously, causes the sound wave of back coupling sound and output sound two sound to cancel out each other, thus inhibits the generation of back coupling phenomenon.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows a kind of structural representation with the earplug arrangement suppressing feedback function of the present invention.
Description of reference numerals: 10-shell; 20-damping material; 30-Mike; Pickup hole after 31-; Pickup hole before 32-; 41-loudspeaker one; 42-loudspeaker two; 50-earplug set; A-sound channel A; B-sound channel B.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
A specific embodiment of the present invention is see shown in accompanying drawing 1, after people's one's voice in speech is passed to duct, propagate through sound channel B by air vibration and enter pickup hole 32 before Mike 30, the sound of pickup is sent to the communicating terminal of connection by wired or wireless mode.
After the sound that loudspeaker 1 spread out of enters duct by sound channel A, have partial sound (record through test and be approximately 16%) and entered into pickup hole 32 before Mike 30 by sound channel B, this creates the terminal back coupling phenomenon.
The present invention is in order to eliminate back coupling phenomenon, the loudspeaker two simultaneously obtaining voice signal with loudspeaker one from communicating terminal are set, the voice signal obtained is exported, and output volume is about 16% of loudspeaker one, is sent to the rear pickup hole 31 of Mike 30 by the cavity after Mike.The sound of the same frequency that the pickup hole, front and back of differential Mike is picked up simultaneously and volume has been cancelled mutually, and pressure reduction is zero, does not produce voice signal, therefore also just eliminates back coupling phenomenon.
Device of the present invention has the earplug housing 10 of a hollow, has components and parts loudspeaker 1, loudspeaker 2 42 and Mike 30 in housing, sound channel A and sound channel B, and Mike 30 rear cavity, its complementary space is filled by damping material 20.
There is a front pickup hole 32 differential Mike 30 front portion, there is pickup hole 31 after one or several at rear portion, and front pickup hole 32 goes out sound end towards earplug.
Loudspeaker 1 and loudspeaker 2 42 are moving-iron type unit, respectively have a sender.Loudspeaker 1 are in the bottom of Mike 30, and sender goes out sound end towards earplug.
In order to line is convenient and easy to assembly, loudspeaker 2 42 are set to be integrated in the rear portion of loudspeaker 1 and back-to-back arrangement, and sender goes out the reverse side of sound end towards earplug.Like this, two loudspeaker can share same set of wiring, and can sub-assembly be made into, the pad of loudspeaker is united two into one, reduces to two solder joints, and jointly assemble, make to be easy to welding procedure and assembly in process of production, can enhance productivity, reduce production cost, also effectively can improve conforming product rate simultaneously.
The audio signal that the communicating terminal connected from wired or wireless mode obtains is exported by loudspeaker 1, and what arrive earplug through sound channel A goes out sound end (earplug set 50), is sent in duct.
The audio signal that the communicating terminal connected from wired or wireless mode obtains is exported by loudspeaker 2 42, output volume is about 16% of loudspeaker 1, in small-sized cavity reserved in damping material 20 can be sent to after Mike 30 after one or several pickup hole 31.
After people's one's voice in speech is passed to duct, enters pickup hole 32 before Mike 30 by sound channel B, then by wired or wireless mode connecting communication terminal, the sound of pickup is sent out.
Controlled by output circuit, the output volume controlling loudspeaker two is about 16% of loudspeaker one, and exports simultaneously; Pick up loudspeaker one by the pickup hole, front and back of differential Mike simultaneously and export the back coupling sound of generation and the output sound of loudspeaker two, because volume is identical, the sound wave of two sound caused is cancelled out each other, thus inhibits the generation of back coupling phenomenon.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. there is the earplug arrangement suppressing feedback function, it is characterized in that, comprise,
The earplug housing (10) of hollow;
Be arranged on the loudspeaker one (41) in described earplug housing (10), the sender of described loudspeaker one (41) goes out sound end towards earplug arrangement;
Be arranged on the Mike (30) in described earplug housing (10), described Mike (30) is provided with the pickup hole for receiving the sound that duct transmits;
Be arranged on the loudspeaker two (42) in described earplug housing (10), described loudspeaker two (42) are to described Mike (30) output sound.
2. according to claim 1 have the earplug arrangement suppressing feedback function, it is characterized in that, damping material (20) is filled in described earplug housing (10) inside.
3. according to claim 2 have the earplug arrangement suppressing feedback function, it is characterized in that, in described damping material (20), there is cavity, described Mike (30) is provided with the rear pickup hole of the sound for receiving described loudspeaker two (42), and the sound face that goes out of described rear pickup hole and described loudspeaker two (42) is in described cavity together.
4. having according to claim 1 or 3 suppresses the earplug arrangement of feedback function, it is characterized in that, described loudspeaker two (42) are set to be integrated in the rear portion of described loudspeaker one (41) and back-to-back arrangement.
5. according to claim 1 have the earplug arrangement suppressing feedback function, and it is characterized in that, sound is sent to duct through sound channel A by described loudspeaker one (41).
6. according to claim 1 have the earplug arrangement suppressing feedback function, it is characterized in that, described Mike (30) enters pickup hole for picking up by sound channel B, from the sound of speaking propagated by the air vibration in duct that duct transmits.
7. according to claim 1 have the earplug arrangement suppressing feedback function, it is characterized in that, the output volume of loudspeaker two (42) is 16% of loudspeaker one (41), and loudspeaker two (42) and loudspeaker one (41) export simultaneously.
8. according to claim 1 have the earplug arrangement suppressing feedback function, and it is characterized in that, loudspeaker one (41) and loudspeaker two (42) are moving-iron type unit.
9. according to claim 1 have the earplug arrangement suppressing feedback function, and it is characterized in that, Mike (30) is differential Mike.
10. according to claim 3 have the earplug arrangement suppressing feedback function, and it is characterized in that, the rear pickup hole of the described sound for receiving described loudspeaker two (42) is set to one or several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778631.0A CN105263081B (en) | 2015-11-16 | 2015-11-16 | It is a kind of that there is the earplug arrangement for suppressing feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778631.0A CN105263081B (en) | 2015-11-16 | 2015-11-16 | It is a kind of that there is the earplug arrangement for suppressing feedback function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105263081A true CN105263081A (en) | 2016-01-20 |
| CN105263081B CN105263081B (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510778631.0A Active CN105263081B (en) | 2015-11-16 | 2015-11-16 | It is a kind of that there is the earplug arrangement for suppressing feedback function |
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| CN (1) | CN105263081B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018149073A1 (en) * | 2017-02-14 | 2018-08-23 | 歌尔股份有限公司 | Noise-cancelling headphone and electronic device |
| CN111800686A (en) * | 2019-04-02 | 2020-10-20 | 惠州迪芬尼声学科技股份有限公司 | In-ear headphone device with active noise control |
| WO2023051523A1 (en) * | 2021-09-30 | 2023-04-06 | 华为技术有限公司 | Sound output device |
Citations (5)
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| WO2011061483A2 (en) * | 2009-11-23 | 2011-05-26 | Incus Laboratories Limited | Production of ambient noise-cancelling earphones |
| CN202035121U (en) * | 2010-12-27 | 2011-11-09 | 深圳市奥尼电子工业有限公司 | Handset with built-in microphone |
| CN103179295A (en) * | 2011-12-26 | 2013-06-26 | 沈阳晨讯希姆通科技有限公司 | Mobile terminal capable of removing echo and echo removing method thereof |
| CN104602155A (en) * | 2015-01-14 | 2015-05-06 | 中山市天键电声有限公司 | Wireless noise reduction earphone based on intelligent mobile terminal |
| CN205081942U (en) * | 2015-11-16 | 2016-03-09 | 北京祥雍智杰科技有限公司 | Earplug device with restrain back coupling function |
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2015
- 2015-11-16 CN CN201510778631.0A patent/CN105263081B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011061483A2 (en) * | 2009-11-23 | 2011-05-26 | Incus Laboratories Limited | Production of ambient noise-cancelling earphones |
| CN202035121U (en) * | 2010-12-27 | 2011-11-09 | 深圳市奥尼电子工业有限公司 | Handset with built-in microphone |
| CN103179295A (en) * | 2011-12-26 | 2013-06-26 | 沈阳晨讯希姆通科技有限公司 | Mobile terminal capable of removing echo and echo removing method thereof |
| CN104602155A (en) * | 2015-01-14 | 2015-05-06 | 中山市天键电声有限公司 | Wireless noise reduction earphone based on intelligent mobile terminal |
| CN205081942U (en) * | 2015-11-16 | 2016-03-09 | 北京祥雍智杰科技有限公司 | Earplug device with restrain back coupling function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018149073A1 (en) * | 2017-02-14 | 2018-08-23 | 歌尔股份有限公司 | Noise-cancelling headphone and electronic device |
| CN111800686A (en) * | 2019-04-02 | 2020-10-20 | 惠州迪芬尼声学科技股份有限公司 | In-ear headphone device with active noise control |
| CN111800686B (en) * | 2019-04-02 | 2022-07-22 | 惠州迪芬尼声学科技股份有限公司 | In-ear headphone device with active noise control |
| WO2023051523A1 (en) * | 2021-09-30 | 2023-04-06 | 华为技术有限公司 | Sound output device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105263081B (en) | 2018-05-01 |
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Effective date of registration: 20210721 Address after: 100095 building 3, Linshan Linyu Second District, Lengquan Xishan, Haidian District, Beijing Patentee after: Zhao Qiang Address before: Room 712-8, building D, entrepreneurship Park, No. 2, Shangdi Information Road, Haidian District, Beijing 100085 Patentee before: BEIJING XIANGYONG ZHIJIE TECHNOLOGY Co.,Ltd. |