CN109040890A - A kind of earphone noise reduction unit - Google Patents
A kind of earphone noise reduction unit Download PDFInfo
- Publication number
- CN109040890A CN109040890A CN201810857224.2A CN201810857224A CN109040890A CN 109040890 A CN109040890 A CN 109040890A CN 201810857224 A CN201810857224 A CN 201810857224A CN 109040890 A CN109040890 A CN 109040890A
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- China
- Prior art keywords
- noise reduction
- reduction unit
- microphone
- headset earpiece
- earphone
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000009467 reduction Effects 0.000 title claims abstract description 100
- 238000009434 installation Methods 0.000 claims description 27
- 238000005476 soldering Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012827 research and development Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
- H04R2201/105—Manufacture of mono- or stereophonic headphone components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/01—Hearing devices using active noise cancellation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of earphone noise reduction units, including headband, first headset earpiece and the second headset earpiece, the both ends of headband are separately installed with the first headset earpiece and the second headset earpiece, the inside of first headset earpiece and the second headset earpiece is equipped with noise reduction unit mounting plate, the side of noise reduction unit mounting plate is equidistantly equipped with several threaded holes, the corresponding position position of first headset earpiece and the second headset earpiece and threaded hole is equipped with the threaded post being linked together, noise reduction unit mounting plate by screw pass through threaded hole with threaded post be threadedly coupled, noise reduction unit is embedded in groove in the middle part of noise reduction unit mounting plate, noise reduction unit includes fixed bracket.The present invention can adapt to any a headphone, and a noise cancelling headphone can be become by installing " noise reduction unit ", and light volume production shortens research and development and time to volume, reduce research and development and production cost, improve production effect, increase the profit of factory.
Description
Technical field
The invention belongs to Headphone accessory manufacturing fields, specifically, being related to a kind of earphone noise reduction unit.
Background technique
The working principle of active noise cancelling headphone is that environmental noise (having built-in and external) is picked up by mark gram wind, is then passed through
The sound film that a kind of reverse voice signal promotion loudspeaker are generated after oversampling circuit processing issues reversed sound wave and offsets with environmental noise,
To realize the purpose of noise reduction.Appearance and structure per a earphone is all different, each in order to reach good noise reduction effect
Money noise cancelling headphone its loudspeaker (specifications parameter and sound membrane material), Dolby circuit, mark gram wind (placement position and ginseng in design
Number) and cavity (cavity size) require accurate calculating and experiment repeatedly.
Noise cancelling headphone is had got long long way to go after producing sample into the volume production stage, such as the survey of semi-finished product pcb board
Examination, parametric loudspeaker deviation, the deviation of microphone parameters, the control of production technology, the consistency of bulk article, production efficiency etc. are raw
Link is produced there are many uncontrollable factor, the yield that then will lead to product is very low.
Summary of the invention
In view of this, the application it is to be solved be in routine techniques earphone noise reduction unit and headphone suitability compared with
The problem of difference.The present invention provides a kind of earphone noise reduction units can be such that noise reduction unit can be adapted for compared to routine techniques
A variety of headphones reduce the production cost of noise cancelling headphone.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical programs:
The present invention provides a kind of earphone noise reduction unit, including headband, the first headset earpiece and the second headset earpiece,
The both ends of the headband are separately installed with the first headset earpiece and the second headset earpiece, first headset earpiece and second
The inside of headset earpiece is equipped with noise reduction unit mounting plate, and the side of the noise reduction unit mounting plate is equidistantly equipped with several screw threads
The corresponding position position of hole, first headset earpiece and the second headset earpiece and threaded hole is equipped with the threaded post being linked together,
The noise reduction unit mounting plate by screw pass through threaded hole with threaded post be threadedly coupled, in the noise reduction unit mounting plate
Noise reduction unit is embedded in the groove in portion, the noise reduction unit includes fixed bracket, and the support bracket fastened top is equipped with and is linked as
The microphone installation cavity of one, the support bracket fastened side are fixed with noise reduction integrated circuit board, the fixed bracket and drop
It makes an uproar and is fixed with driving unit in the gap between integrated circuit board, be embedded with voice coil in the annular ring of the driving unit side,
The support bracket fastened other side is successively fixed with adjustable sound paper and sound film, the top soldering connection of the noise reduction integrated circuit board
There is microphone mounting base, side and the microphone installation cavity of the microphone mounting base are fixed, the microphone installation cavity
Inside be connected together and have microphone, the voice coil and noise reduction integrated circuit board are electrically connected, and the microphone passes through microphone
Mounting base and integrated circuit board are electrically connected, and the integrated circuit board and earphone cable are electrically connected.
As a preferred technical solution of the present invention, in a kind of possible embodiment, the support bracket fastened side
Side is equipped with several notches.
As a preferred technical solution of the present invention, in a kind of possible embodiment, the noise reduction unit it is straight
Diameter is 35-50mm without microphone installation cavity protrusion range；The height of noise reduction unit is free of microphone installation cavity height model
It encloses for 7-10mm.
The microphone is mounted in a kind of possible embodiment as a preferred technical solution of the present invention
Microphone in installation cavity is placed in the top of sound film edge, and the pickup hole of the microphone is outwardly.
As a preferred technical solution of the present invention, in a kind of possible embodiment, the sound film uses individual
Moulding process is made.
As a preferred technical solution of the present invention, in a kind of possible embodiment, the noise reduction unit installation
Position offers several loud-speaker openings at the face of plate and sound film.
Compared with prior art, the application can be obtained including following technical effect:
1) this kind of earphone noise reduction unit can adapt to any a headphone, install " noise reduction unit "
As a noise cancelling headphone, light volume production.Shorten research and development and time to volume, reduce research and development and production cost, improves production effect
Fruit increases the profit of factory.
2) the independent noise reduction unit of installation in two earpieces of earphone, improves the anti-acoustic capability of earphone really, tests repeatedly
It is integrally formed, the specification of each part and position are fixed, the horn single body phase that appearance, volume are 40mm with existing diameter
When.
3) the fixation bracket Yu noise reduction integrated circuit board, driving unit and microphone of noise reduction unit take dismountable structure
Connection, facilitates the assembly and installation of noise reduction unit.
4) noise reduction integrated circuit board is made into the shape to match with fixed bracket, and noise reduction integrated circuit board is fixed
In support bracket fastened back, it is ensured that the whole uniformity of noise reduction unit, convenient for the installation of noise reduction unit.
Certainly, any product for implementing the application must be not necessarily required to reach all the above technical effect simultaneously.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of earphone noise reduction unit of the embodiment of the present application；
Fig. 2 is a kind of mounting structure schematic diagram of earphone noise reduction unit retaining mechanism of the embodiment of the present application；
Fig. 3 is a kind of schematic perspective view of earphone noise reduction unit of the embodiment of the present application.
Fig. 4 is a kind of explosive view of earphone noise reduction unit of the embodiment of the present application；
Fig. 5 is that the structure that a kind of microphone of earphone noise reduction unit of the embodiment of the present application is connect with microphone installation cavity is shown
It is intended to；
Fig. 6 is a kind of bottom substance schematic diagram of earphone noise reduction unit of the embodiment of the present application；
Fig. 7 is a kind of top structure schematic diagram of earphone noise reduction unit of the embodiment of the present application；
Fig. 8 is a kind of side structure schematic view of earphone noise reduction unit of the embodiment of the present application；
Fig. 9 is a kind of vertical view structural schematic diagram of earphone noise reduction unit of the embodiment of the present application；
Figure 10 is a kind of noise reduction curve graph of earphone noise reduction unit of the embodiment of the present application；
Figure 11 is a kind of module map of earphone noise reduction unit of the embodiment of the present application.
In figure: 1, headband；2, the first headset earpiece；3, the second headset earpiece；4, noise reduction unit mounting plate；5, noise reduction
Unit；6, threaded post；7, threaded hole；8, noise reduction integrated circuit board；9, driving unit；10, fixed bracket；11, microphone is installed
Chamber；12, microphone；13, adjustable sound paper；14, voice coil；15, sound film；16, notch.
Specific embodiment
Presently filed embodiment is described in detail below in conjunction with accompanying drawings and embodiments, how the application is applied whereby
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
As shown in figs. 1-11, a kind of earphone noise reduction unit of the present invention, including headband 1, the first headset earpiece 2 and second
Headset earpiece 3, the both ends of headband 1 are separately installed with the first headset earpiece 2 and the second headset earpiece 3, the first headset earpiece 2
It is equipped with noise reduction unit mounting plate 4 with the inside of the second headset earpiece 3, the side of noise reduction unit mounting plate 4 is equidistantly equipped with several
A threaded hole 7, the first headset earpiece 2 and the second headset earpiece 3 and the corresponding position position of threaded hole 7 are equipped with the spiral shell being linked together
Line column 6, noise reduction unit mounting plate 4 by screw pass through threaded hole 7 with threaded post 6 be threadedly coupled, noise reduction unit mounting plate 4
Noise reduction unit 5 is embedded in the groove at middle part, noise reduction unit 5 includes fixed bracket 10, and the top of fixed bracket 10, which is equipped with, to be linked as
The microphone installation cavity 11 of one, the side of fixed bracket 10 are fixed with noise reduction integrated circuit board 8, fixed bracket 10 and noise reduction
It is fixed with driving unit 9 in gap between integrated circuit board 8, is embedded with voice coil 14 in 9 side annular ring of driving unit, Gu
The other side of fixed rack 10 is successively fixed with adjustable sound paper 13 and sound film 15, and the top soldering of noise reduction integrated circuit board 8 is connected with
Microphone mounting base, side and the microphone installation cavity 11 of microphone mounting base are fixed, the inside of microphone installation cavity 11
Being connected together has microphone 12, and voice coil 14 and noise reduction integrated circuit board 8 are electrically connected, microphone 12 by microphone mounting base with
Integrated circuit board 8 is electrically connected, and integrated circuit board 8 and earphone cable are electrically connected.
Preferably, the avris of fixed bracket 10 is equipped with several notches 16, and fixed bracket 10 forms sound chamber, it is ensured that earphone hair
The quality of sound.
Preferably, the diameter of noise reduction unit 5 is 35-50mm without 11 protrusion range of microphone installation cavity；Noise reduction list
The height of member 5 is 7-10mm without 11 altitude range of microphone installation cavity, by accurate data test, it is ensured that noise reduction unit 5
Decrease of noise functions.
Preferably, the microphone 12 being mounted in microphone installation cavity 11 is placed in the top at 15 edge of sound film, and microphone
Outwardly, conducive to the pickup of noise, environmental noise is picked up by microphone 12, then passes through noise reduction integrated circuit board in 12 pickup hole
After 8 processing of circuit, generates a kind of reverse voice signal sound film 15 is pushed to issue reversed sound wave and offseted with environmental noise.
Preferably, sound film 15 is made of single sheet shaping technique, ensure that consistency when batch production；Senior middle school is taken into account
Low frequency and good elasticity, when noise reduction being avoided to work power it is excessive cause sound film 15 protrusion and can not return.
Preferably, position offers several loud-speaker openings at the face of noise reduction unit mounting plate 4 and sound film 15, and earphone is being sent out
When sound, it is ensured that headphones sound is passed to the sound quality of human ear.
When specific works, fixed bracket 10 can be carried out integrated molding processing first in production by this noise reduction unit 5,
Then one end of driving unit 9 is embedded in the driving unit mounting groove at fixed 10 middle part of bracket, the other end of driving unit 9
It is placed in the fluting at 8 middle part of noise reduction integrated circuit board, then pacifies the microphone mounting base on 8 top of integrated circuit board and microphone
It behave affectedly and 11 is fixed, be so threadedly coupled the bottom end of integrated circuit board 8 with the threaded hole of fixation 10 bottom end of bracket using screw,
Voice coil 14 is placed in the annular ring of 9 side of driving unit, and magnet is coated on inside it, and adjustable sound paper 13 and voice coil 14 are successively distinguished
It is placed in the limiting slot that fixed 10 other side of bracket is equipped with, microphone 12 is connected together in microphone installation cavity 11, and is same
When guarantee the pickup mouth of microphone 12 outwardly, noise reduction unit 5 after being completed and the groove in the middle part of noise reduction unit mounting plate 4 are embedding
It connects fixed；The specification and size of noise reduction unit mounting plate 4 can according to the headset earpiece of installation specification and size voluntarily
Selection, to be suitable for the installation of different earphones.
Noise reduction unit 5 wherein inside the first headset earpiece 2 and the second headset earpiece 3 is relatively independent, and earphone can be improved
Anti-acoustic capability.
When in use, microphone 12 picks up environmental noise to earphone, then passes through the processing of circuit of noise reduction integrated circuit board 8
Afterwards, it generates a kind of reverse voice signal sound film 15 is pushed to issue reversed sound wave and offseted with environmental noise, specific noise reduction process
It is referred to Figure 11, to realize the purpose of noise reduction, wherein the parameter of noise reduction is referred to the noise reduction curve in Figure 10.
As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer within the acceptable error range, those skilled in the art can within a certain error range solve described in
Technical problem basically reaches the technical effect.In addition, " coupling " word includes any direct and indirect electric property coupling herein
Means.Therefore, if it is described herein that a first device is coupled to a second device, then representing the first device can directly electrical coupling
It is connected to the second device, or the second device indirectly electrically coupled through other devices or coupling means.Specification
Subsequent descriptions be implement the application better embodiment, so it is described description be for the purpose of the rule for illustrating the application,
It is not intended to limit the scope of the present application.The protection scope of the application is as defined by the appended claims.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include, so that commodity or system including a series of elements not only include those elements, but also including not clear
The other element listed, or further include for this commodity or the intrinsic element of system.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that in the commodity or system for including the element also
There are other identical elements.
Several preferred embodiments of the invention have shown and described in above description, but as previously described, it should be understood that the present invention
Be not limited to forms disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations,
Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through within that scope of the inventive concept describe herein
It is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in this hair
In the protection scope of bright appended claims.
Claims (6)
1. a kind of earphone noise reduction unit, including headband (1), the first headset earpiece (2) and the second headset earpiece (3), special
Sign is, the both ends of the headband (1) are separately installed with the first headset earpiece (2) and the second headset earpiece (3), described
The inside of one headset earpiece (2) and the second headset earpiece (3) is equipped with noise reduction unit mounting plate (4), the noise reduction unit installation
The side of plate (4) is equidistantly equipped with several threaded holes (7), first headset earpiece (2) and the second headset earpiece (3) and screw thread
The corresponding position position in hole (7) is equipped with the threaded post (6) being linked together, and the noise reduction unit mounting plate (4) is passed through by screw
A threaded hole (7) with threaded post (6) be threadedly coupled, be embedded with noise reduction in the groove in the middle part of the noise reduction unit mounting plate (4)
Unit (5), the noise reduction unit (5) include fixed bracket (10), and the top of the fixed bracket (10), which is equipped with, to be linked together
The side of microphone installation cavity (11), the fixed bracket (10) is fixed with noise reduction integrated circuit board (8), the fixed bracket
(10) it is fixed with driving unit (9) in the gap between noise reduction integrated circuit board (8), (9) one side ring of driving unit
It is embedded in shape circle voice coil (14), the other side of the fixed bracket (10) is successively fixed with adjustable sound paper (13) and sound film
(15), the top soldering of the noise reduction integrated circuit board (8) is connected with microphone mounting base, the side of the microphone mounting base
It is fixed with microphone installation cavity (11), the inside of the microphone installation cavity (11) is connected together and has microphone (12), institute
It states voice coil (14) and noise reduction integrated circuit board (8) to be electrically connected, the microphone (12) passes through microphone mounting base and integrated electricity
Road plate (8) is electrically connected, and the integrated circuit board (8) and earphone cable are electrically connected.
2. a kind of earphone noise reduction unit as described in claim 1, which is characterized in that the avris of the fixed bracket (10) is equipped with
Several notches (16).
3. a kind of earphone noise reduction unit as described in claim 1, which is characterized in that the diameter of the noise reduction unit (5) (is free of
Microphone installation cavity (11) protrusion) range be 35-50mm；The height of noise reduction unit (5) (is free of microphone installation cavity (11)
Highly) range is 7-10mm.
4. a kind of earphone noise reduction unit as claimed in claim 2, which is characterized in that be mounted on the microphone installation cavity (11)
Interior microphone (12) is placed in the top at sound film (15) edge, and the pickup hole of the microphone (12) is outwardly.
5. a kind of earphone noise reduction unit as described in claim 1, which is characterized in that the sound film (15) uses single sheet shaping work
Skill is made.
6. a kind of earphone noise reduction unit as described in claim 1, which is characterized in that the noise reduction unit mounting plate (4) and sound
Position offers several loud-speaker openings at the face of film (15).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810503192 | 2018-05-23 | ||
| CN2018105031926 | 2018-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109040890A true CN109040890A (en) | 2018-12-18 |
Family
ID=64648175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810857224.2A Pending CN109040890A (en) | 2018-05-23 | 2018-07-31 | A kind of earphone noise reduction unit |
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| Country | Link |
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| CN (1) | CN109040890A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686501A (en) * | 2012-09-05 | 2014-03-26 | 深圳市凯聚源科技有限公司 | Noise cancelling bluetooth headset |
| CN204305320U (en) * | 2015-01-16 | 2015-04-29 | 捷音特科技股份有限公司 | Noise cancelling headphone |
| CN105122837A (en) * | 2013-04-19 | 2015-12-02 | 三星电子株式会社 | Headset to provide noise reduction |
| US20160080853A1 (en) * | 2014-09-17 | 2016-03-17 | Wei-Hsiang Chen | Modular headphone system |
| US20160210956A1 (en) * | 2015-01-16 | 2016-07-21 | Jetvox Acoustic Corp. | Noise-reducing headphone |
| CN106375896A (en) * | 2016-10-31 | 2017-02-01 | 深圳市冠旭电子股份有限公司 | Head-mounted noise-cancelling headphone |
| CN206835315U (en) * | 2017-05-18 | 2018-01-02 | 中山市天键通讯技术有限公司 | Anti- structure and the noise cancelling headphone of uttering long and high-pitched sounds for reaction type noise cancelling headphone |
-
2018
- 2018-07-31 CN CN201810857224.2A patent/CN109040890A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686501A (en) * | 2012-09-05 | 2014-03-26 | 深圳市凯聚源科技有限公司 | Noise cancelling bluetooth headset |
| CN105122837A (en) * | 2013-04-19 | 2015-12-02 | 三星电子株式会社 | Headset to provide noise reduction |
| US20160080853A1 (en) * | 2014-09-17 | 2016-03-17 | Wei-Hsiang Chen | Modular headphone system |
| CN204305320U (en) * | 2015-01-16 | 2015-04-29 | 捷音特科技股份有限公司 | Noise cancelling headphone |
| US20160210956A1 (en) * | 2015-01-16 | 2016-07-21 | Jetvox Acoustic Corp. | Noise-reducing headphone |
| CN106375896A (en) * | 2016-10-31 | 2017-02-01 | 深圳市冠旭电子股份有限公司 | Head-mounted noise-cancelling headphone |
| CN206835315U (en) * | 2017-05-18 | 2018-01-02 | 中山市天键通讯技术有限公司 | Anti- structure and the noise cancelling headphone of uttering long and high-pitched sounds for reaction type noise cancelling headphone |
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Effective date of registration: 20190808 Address after: 518100 Building 508, 509, 510, Building A, 37 Dequan Road, 228 Henggang Street, Longgang District, Shenzhen City, Guangdong Province Applicant after: SHENZHEN LANKECHUANG TECHNOLOGY Co.,Ltd. Address before: 412300 Yanpu 007, Yanpu Formation, Pailou Village, New Town, Youxian County, Zhuzhou City, Hunan Province Applicant before: Chen Bo Applicant before: Xiong Jianfeng |
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Application publication date: 20181218 |