CN204539427U - Noise reduction horn - Google Patents
Noise reduction horn Download PDFInfo
- Publication number
- CN204539427U CN204539427U CN201520237654.6U CN201520237654U CN204539427U CN 204539427 U CN204539427 U CN 204539427U CN 201520237654 U CN201520237654 U CN 201520237654U CN 204539427 U CN204539427 U CN 204539427U
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- China
- Prior art keywords
- noise reduction
- sound
- microphone
- loudspeaker
- protecting cover
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Abstract
A kind of noise reduction horn, comprise loudspeaker unit and microphone, also comprise loudspeaker protecting cover, loudspeaker protecting cover is arranged on the outlet sound mouth of the frame of loudspeaker unit, and microphone is arranged on loudspeaker protecting cover, and loudspeaker protecting cover is also provided with some phonate holes.The utility model is owing to being arranged on loudspeaker protecting cover by microphone, it is very little that the volume of the magnet in loudspeaker unit can do, the flaky magnet of atresia can also be used, the diameter of such noise reduction horn can be accomplished lower than 15mm, even can reach 6mm, can this project organization is applied in the products such as the headphone even ear noise-reducing headphone of Geng little mechanism; The sound energy very first time that vibrating diaphragm sends by microphone collection analysis, and faster more fully can be analyzed environmental noise and offsets; Have that structure is simple, excellent noise reduction effect, can scale of mass production, sounding undistorted, be not only applicable to doing large-size and but also being suitable for doing the advantages such as reduced size.
Description
Technical field
The utility model relates to a kind of noise reduction horn, it can in loudspeaker man made noise, and the anti-noise equal with amplitude, phase place is contrary and noise offset in earphone, to improve the definition of speech sound signal.
Background technology
Sound produces by vibrating and propagates in atmosphere, and sound can be blocked in communication process, absorb and reversal of vibrations is offset.Under normal conditions, loudspeaker are present in general environment as secondary sound generation source, ambient noise then becomes elementary sound generation source relative to other sound, people can utilize sound propagation properties and vibration cancellation principle, make secondary sound generation source carry out weakening counteracting to the noise that elementary sound generation source passes through, that is the loudspeaker vibration that generation frequency range is identical, phase place is contrary while playing source of sound generation vibration carries out reduction elimination to the ambient noise around loudspeaker.
On the noise reducing apparatus that some are traditional, such as automobile noise reduction system, earphone noise reduction system, also use loudspeaker and microphone to carry out some special constructions to arrange in pairs or groups to realize decrease of noise functions, but loudspeaker and microphone are all independent individuals, and their fixed support is also independently, this specific fixed support is that assembling brings significant limitation, that is cannot realize the function of noise reduction system on traditional horn bracket.
Chinese patent literature CN103118319A discloses integrated micro noise reduction horn, comprises mini microphone, loudspeaker unit, and loudspeaker unit comprises annular horn bracket, toroid and annular vibration diaphragm; Annular horn bracket center is provided with circular hole, and circular hole is connected with mini microphone is embedded, and mini microphone, annular horn bracket, toroid and annular vibration diaphragm center are on the same axis; Loudspeaker unit and mini microphone adopt the design of integration, effectively can reduce the space of noise reduction unit, reduce the cavity thickness of auricular concha, and the directivity of microphone pickup noise reaches best angle and makes the effective of its de-noising, because the utility model has These characteristics and advantage, can be applied in the products such as head-mounted noise reduction earphone for this reason.But because this integrated micro noise reduction horn is connected in annular horn bracket center by embedded for mini microphone, the volume due to mini microphone has limit once, can not infinitely do little.Like this, mini microphone has part and extend in the mesopore of annular magnet, this just make the volume of annular magnet producing magnetic field do can not be too little, even can not use the flaky magnet of atresia, cause the diameter of noise reduction horn generally can only be more than 15mm, need in some occasion now that the diameter of noise reduction horn is minimum will reach 6mm, and the noise reduction horn of this structure can not realize.
And because mini microphone is embedded in annular horn bracket center, the mini microphone made occupies and/or have impact on the position of the sound regulating hole of integrated micro noise reduction horn, and have impact on the tonequality that integrated micro noise reduction horn sounds further, the sound making it send is abundant not, and the sound that sends can distortion, people are made to be difficult to distinguish middle pitch, difference between high pitch and bass from the sound that it sends.
Utility model content
In order to overcome the problems referred to above, the utility model provides one to be namely applicable to doing large-size to society, is suitable for again the noise reduction horn doing reduced size.
The technical solution of the utility model is: provide a kind of noise reduction horn, comprise loudspeaker unit and microphone, also comprise loudspeaker protecting cover, described loudspeaker protecting cover is arranged on the outlet sound mouth of the frame of described loudspeaker unit, described microphone is arranged on described loudspeaker protecting cover, and described loudspeaker protecting cover is also provided with some phonate holes.
As to improvement of the present utility model, described loudspeaker protecting cover is provided with inlaid hole, and described microphone is arranged in described inlaid hole.
As to improvement of the present utility model, described frame is provided with more than one sound regulating hole.
As to improvement of the present utility model, the position of the described sound regulating hole of correspondence is provided with adjustable sound paper.
As to improvement of the present utility model, described loudspeaker unit also comprises magnet, sound coil and vibrating diaphragm, and described sound coil is fixed on described vibrating diaphragm.
As to improvement of the present utility model, also comprise PCBA board, described PCBA board is provided with several pad, described PCBA board is electrically connected with described microphone and described sound coil respectively by described pad, and the ground pads of described microphone and the ground pads of described sound coil unite two into one.
As to improvement of the present utility model, also comprise flexible PCB, described microphone is electrically connected by described flexible PCB and described PCBA board.
As to improvement of the present utility model, described magnet is annular magnet, and described sound regulating hole is arranged on the position of the mesopore of corresponding described annular magnet, or described sound regulating hole is arranged in the described frame of described annular magnet peripheral position.
As to improvement of the present utility model, described PCBA board is arranged in described frame, and the position of corresponding described sound regulating hole is provided with perforation in described PCBA board.
As to improvement of the present utility model, described sound regulating hole is arranged on the position of described magnet.
As to improvement of the present utility model, also comprise outer shroud, the corresponding described vibrating diaphragm of described outer shroud is arranged in described frame.
The utility model is owing to being arranged on loudspeaker protecting cover by microphone, it is very little that the volume of the magnet in loudspeaker unit can do, the flaky magnet of atresia can also be used, the diameter of such noise reduction horn can be accomplished lower than 15mm, even can reach 6mm, therefore can this project organization is applied in the products such as the headphone even ear noise-reducing headphone of Geng little mechanism; Microphone is electrically connected by flexible PCB and PCBA board, make welding easier, microphone and vibrating diaphragm just right with minimum gap, the sound energy very first time that vibrating diaphragm sends by microphone collection analysis, and more fully can be analyzed environmental noise and offsets sooner; Frame is provided with sound regulating hole, and sound regulating hole can not be subject to taking of other structures and/or affect, the sound that noise reduction horn is sent is very abundant, very pure, can not distortion, people are easy to distinguish middle pitch, difference between high pitch and bass from the sound that it sends; Have that structure is simple, excellent noise reduction effect, conforming product rate are high, can scale of mass production, sounding undistorted, be not only applicable to doing large-size and but also being suitable for doing the advantages such as reduced size.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of a kind of embodiment of the present utility model;
Fig. 2 is the cross-sectional schematic of another kind of embodiment of the present utility model;
Wherein: 1. frame; 11. first otch; 12. second otch; 13. sound regulating holes; 14. outer shrouds; 21. magnet; 211. mesopore; 22. sound coils; 23. vibrating diaphragms; 3. loudspeaker protecting cover; 31. microphones; 32. phonate holes; 33. inlaid holes; 4.PCBA plate; 41. perforation; 42. cables; 43. flexible PCBs.
Embodiment
In description of the present utility model, it will be appreciated that, orientation or the position relationship of the instruction such as " " center ", " on ", D score, "front", "rear", "left", "right" in term be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " connection ", " being connected " should be interpreted broadly, and such as, can be fixedly connected with, and also can be that dismounting connects, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also can be indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term can be understood at concrete meaning of the present utility model.In addition, in description of the present utility model, except as otherwise noted, the implication of " multiple ", " some " is two or more.
Refer to Fig. 1, a kind of embodiment of a kind of noise reduction horn that what Fig. 1 disclosed is, comprise loudspeaker unit, microphone 31 and loudspeaker protecting cover 3, described loudspeaker protecting cover 3 is arranged on the outlet sound mouth of frame 1 of described loudspeaker unit, described microphone 31 is arranged on described loudspeaker protecting cover 3, described loudspeaker protecting cover 3 is also provided with some phonate holes 32, and the sound that described loudspeaker unit sends sends from described phonate hole 32.Described loudspeaker protecting cover 3 is provided with inlaid hole 33, described microphone 31 is arranged in described inlaid hole 33, described inlaid hole 33 is arranged on the center of described loudspeaker protecting cover 3, described inlaid hole 33 not only plays fixing described microphone 31, described inlaid hole 33 also plays a part to adopt acoustic aperture, that is, when the transfer voice that sends of described loudspeaker unit is to described inlaid hole 33, will be collected by described microphone 31.
In the present embodiment, described loudspeaker unit comprises described frame 1, magnet 21, sound coil 22 and vibrating diaphragm 23, described sound coil 22 is fixed on described vibrating diaphragm 23, and described magnet 21, described sound coil 22 and described vibrating diaphragm 23 are arranged in described frame 1.Described vibrating diaphragm 23 once comprises inner ring, ring and outer shroud 14 from inside to outside, described sound coil 22 is fixed on described ring, described microphone 31 faces described inner ring, and the spacing between described microphone 31 and described vibrating diaphragm 23 is very little, the sound energy very first time that described vibrating diaphragm 23 is play by described microphone 31 collection analysis, and then is more fully analyzed environmental noise and offsets sooner.Described frame 1 is provided with more than one sound regulating hole 13, because described sound regulating hole 13 can not be subject to taking of other structures and/or affect, the sound that described noise reduction horn is sent is very abundant, very pure, can not distortion, people are easy to distinguish middle pitch, difference between high pitch and bass from the sound that it sends; The position of the described sound regulating hole of correspondence 13 is provided with adjustable sound paper (not shown).
In the present embodiment, also comprise PCBA board 4, described PCBA board 4 is provided with several pad, described PCBA board 4 is electrically connected with described microphone 31 and described sound coil 22 respectively by described pad, the ground pads of described microphone 31 and the ground pads of described sound coil 22 unite two into one, decrease cabling, reduce the disqualification rate of product, improve the volume production efficiency of product.
In the present embodiment, also comprise flexible PCB 43, described microphone 31 is electrically connected with described PCBA board 4 by described flexible PCB 43.Specifically, one end and the described PCBA board 4 of described flexible PCB 43 are electrically connected, the other end of described flexible PCB 43 is electrically connected with described microphone 31 through the first otch 11 be arranged in described frame 1, such design makes welding easier, and described flexible PCB 43 is fitted on the outer wall of described frame 1, make the outward appearance of described noise reduction horn more attractive in appearance.Also comprise cable 42, one end of described cable 42 is connected with described PCBA board 4, and the other end of described cable 42 is connected with described sound coil 22 through the second otch 12 be arranged in described frame 1, and described cable 42 is enamelled wires.
In the present embodiment, described microphone 31 will receive the transfer voice of ambient noise and the broadcasting of described loudspeaker unit to described PCBA board 4, by the circuit specific filtration resistance comparatively calculation process in described PCBA board 4, draw the ambient noise signal of separation, and obtain the anti-phase noise signal of telecommunication contrary with ambient noise by computing, again the anti-phase noise signal of telecommunication and source of sound analog electrical signal are synthesized and played back by described loudspeaker unit, that is described loudspeaker unit is while broadcasting sound source sound, also the anti-phase sound wave of offsetting ambient noise is being play, thus rejecting ambient noise interference, the sound source sound play is allowed to sound more clear.
In the present embodiment, described magnet 21 is annular magnets, and described sound regulating hole 13 is arranged on the position of the mesopore 211 of corresponding described annular magnet, or described sound regulating hole 13 is arranged in the described frame 1 of described annular magnet peripheral position.Described PCBA board 4 is arranged on the outer wall bottom described frame 1, and the position of corresponding described sound regulating hole 13 is provided with perforation 41 in described PCBA board 4.Described magnet 21 can also be flaky magnet (referring to Fig. 2), and described sound regulating hole 13 is arranged on the position of described magnet 21, then described PCBA board 4 just need not arrange perforation 41.
In the present embodiment, also comprise outer shroud 14, the corresponding described vibrating diaphragm 23 of described outer shroud 14 is arranged in described frame 1.Described outer shroud 14 is beckets, and as copper ring, described outer shroud 14 plays tuning, and the sound that described noise reduction horn is sent is purer, and can not distortion.
In the present embodiment, due to described microphone 31 is arranged on described loudspeaker protecting cover 3, therefore noise reduction horn described in described frame 1() diameter can accomplish lower than 15mm, even can reach 6mm, therefore can being applied to this project organization in the products such as the headphone even ear noise-reducing headphone of Geng little mechanism.The utility model has that structure is simple, excellent noise reduction effect, conforming product rate are high, can scale of mass production, sounding undistorted, be not only applicable to doing large-size and but also being suitable for doing the advantages such as reduced size.
Claims (10)
1. a noise reduction horn, comprises loudspeaker unit and microphone, it is characterized in that, also comprise loudspeaker protecting cover, described loudspeaker protecting cover is arranged on the outlet sound mouth of the frame of described loudspeaker unit, and described microphone is arranged on described loudspeaker protecting cover, and described loudspeaker protecting cover is also provided with some phonate holes.
2. noise reduction horn according to claim 1, is characterized in that: on described loudspeaker protecting cover, be provided with inlaid hole, described microphone is arranged in described inlaid hole.
3. noise reduction horn according to claim 1 and 2, is characterized in that: in described frame, be provided with more than one sound regulating hole.
4. noise reduction horn according to claim 3, is characterized in that: on the position of the described sound regulating hole of correspondence, be provided with adjustable sound paper.
5. noise reduction horn according to claim 3, is characterized in that: described loudspeaker unit also comprises magnet, sound coil and vibrating diaphragm, and described sound coil is fixed on described vibrating diaphragm.
6. noise reduction horn according to claim 5, it is characterized in that: also comprise PCBA board, described PCBA board is provided with several pad, described PCBA board is electrically connected with described microphone and described sound coil respectively by described pad, and the ground pads of described microphone and the ground pads of described sound coil unite two into one.
7. noise reduction horn according to claim 6, is characterized in that: also comprise flexible PCB, and described microphone is electrically connected by described flexible PCB and described PCBA board.
8. noise reduction horn according to claim 5, it is characterized in that: described magnet is annular magnet, described sound regulating hole is arranged on the position of the mesopore of corresponding described annular magnet, or described sound regulating hole is arranged in the described frame of described annular magnet peripheral position.
9. noise reduction horn according to claim 6, is characterized in that: described PCBA board is arranged in described frame, and the position of corresponding described sound regulating hole is provided with perforation in described PCBA board.
10. noise reduction horn according to claim 5, is characterized in that: also comprise outer shroud, and the corresponding described vibrating diaphragm of described outer shroud is arranged in described frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520237654.6U CN204539427U (en) | 2015-04-20 | 2015-04-20 | Noise reduction horn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520237654.6U CN204539427U (en) | 2015-04-20 | 2015-04-20 | Noise reduction horn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204539427U true CN204539427U (en) | 2015-08-05 |
Family
ID=53753383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520237654.6U Expired - Fee Related CN204539427U (en) | 2015-04-20 | 2015-04-20 | Noise reduction horn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204539427U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918171A (en) * | 2015-04-20 | 2015-09-16 | 李永南 | Noise-reduction horn |
| CN106851505A (en) * | 2017-03-31 | 2017-06-13 | 方炳钧 | Vibrating diaphragm type zero frequency high tone quality loudspeaker |
| CN112839276A (en) * | 2019-11-22 | 2021-05-25 | 华为技术有限公司 | Microphone and loudspeaker combination module, earphone and terminal equipment |
-
2015
- 2015-04-20 CN CN201520237654.6U patent/CN204539427U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918171A (en) * | 2015-04-20 | 2015-09-16 | 李永南 | Noise-reduction horn |
| CN106851505A (en) * | 2017-03-31 | 2017-06-13 | 方炳钧 | Vibrating diaphragm type zero frequency high tone quality loudspeaker |
| CN112839276A (en) * | 2019-11-22 | 2021-05-25 | 华为技术有限公司 | Microphone and loudspeaker combination module, earphone and terminal equipment |
| WO2021098562A1 (en) * | 2019-11-22 | 2021-05-27 | 华为技术有限公司 | Microphone and speaker combined module, earphones, and terminal device |
| CN112839276B (en) * | 2019-11-22 | 2022-09-09 | 华为技术有限公司 | Microphone and loudspeaker combination module, earphone and terminal equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150805 Termination date: 20170420 |