CN107750026A - Head earphone - Google Patents
Head earphone Download PDFInfo
- Publication number
- CN107750026A CN107750026A CN201711051270.5A CN201711051270A CN107750026A CN 107750026 A CN107750026 A CN 107750026A CN 201711051270 A CN201711051270 A CN 201711051270A CN 107750026 A CN107750026 A CN 107750026A
- Authority
- CN
- China
- Prior art keywords
- housing
- absorption cotton
- sound absorption
- sound
- circuit board
- Prior art date
- 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.)
- Pending
Links
- 229920000742 Cotton Polymers 0.000 claims abstract description 44
- 238000010521 absorption reaction Methods 0.000 claims abstract description 42
- 229920001971 elastomer Polymers 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 10
- 229920000079 Memory foam Polymers 0.000 claims description 3
- 239000008210 memory foam Substances 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 101001010782 Drosophila melanogaster Fez family zinc finger protein erm Proteins 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 206010021703 Indifference Diseases 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000012814 acoustic material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000035939 shock Effects 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention provides a headset, which comprises two ear muffs and a head hoop connected with the two ear muffs, wherein each ear muff comprises a shell, an ear pad, sound absorption cotton and a sound pick-up, the ear pad is arranged on the surface of one outer side of the shell, the sound absorption cotton is arranged in a cavity of the shell, the free area of the cavity is filled with the sound absorption cotton, a layer of rubber pad is coated on the outer side wall of the sound pick-up, and the sound pick-up is fixedly arranged on the shell through the rubber pad. In the headset, the sound absorption cotton is arranged in the cavity of the shell, and the shape and the size of the free space of the cavity of the shell are extracted to be used as the appearance parameters of the sound absorption cotton, so that all the free areas of the cavity of the shell can be filled with the sound absorption cotton, the sound absorption cotton can absorb noise in all directions, the passive noise reduction effect is good, in addition, the vibration transmission among parts is reduced through the rubber pad, the ear pad is arranged to be in close contact with the auricle of a wearer, and the passive noise reduction effect is further improved.
Description
Technical field
The present invention relates to loudspeaker technical field, more particularly to a kind of headphone.
Background technology
With the fast development of high-tech electronics product and the continuous popularization of mobile communication product, earphone is as these products
A kind of indispensable accessory, is also widely used therewith.With continuous improvement of the people to life requirement, consumer couple
The requirement of earphone also more and more higher, except to there is stable communication quality, it can also isolate not under noisy or even high environment of making an uproar
The noise that needs and carry out normal liaison, this requires to need to carry out noise reduction process to earphone.
Earphone in the market can be classified as wear-type and ear type according to wearing mode to divide, headphone
Noise reduction mode mainly has：Carry out physics noise reduction (also referred to as passive noise reduction) using acoustic material and had using electronic circuit
Two kinds of source noise reduction (also referred to as active noise reduction), but taken for the source of making an uproar of the types such as some pulses, shock wave, active noise reduction less than drop
Make an uproar effect, physics noise reduction can only be used, therefore physics noise reduction is particularly important.
Among prior art, the headphone used at present is generally only that simple rubber blanket is set at body clearance
To carry out physics noise reduction, passive noise reduction is poor, and at most the noise within 25dB can only be isolated, and can not meet to use and want
Ask.
The content of the invention
Based on this, it is an object of the invention to provide a kind of headphone of passive excellent noise reduction effect.
A kind of headphone, including head hoop and two earmuffs, two earmuffs connect through the head hoop, the earmuff
Including housing, ear pad, sound absorption cotton and sound pick-up, on an outer surface of the housing, the sound absorption cotton sets the ear pad
In in the cavity of the housing, and the clear area of the cavity is by the sound absorption cotton filling, the lateral wall of the sound pick-up
On be coated with one layer of rubber blanket, the sound pick-up is fixedly arranged on the housing by the rubber blanket.
Above-mentioned headphone, by setting the sound absorption cotton in the housing hollow, increase the housing hollow
Acoustical absorptivity, and the shape and size for extracting the free space of the housing hollow be used as it is described sound absorption cotton outer parameter
Number, so that all clear areas of the housing hollow can be filled up by the sound absorption cotton so that the sound absorption cotton can be complete
Orientation absorption of noise, noise is prevented to be transmitted to the ear of wearer, passive excellent noise reduction effect.In addition, by the rubber blanket come
The sound pick-up is installed, avoids being rigidly connected, reduces the vibration transmission between parts, while by setting on the housing
The ear pad, the ear pad will be in close contact with the auricle of wearer, further improve passive noise reduction.
Further, the thickness of the housing is located at 3mm between 4mm, and the housing is made by PC materials.
Further, the earmuff also includes a circuit board, and the housing includes interior side body and outside housing, described interior
Side body and the outside housing are fastened and connected, and to form the cavity, the circuit board is connected to the interior side body and institute
Between stating sound absorption cotton, the sound pick-up is fixedly arranged on the outer surface of the outside housing, the sound pick-up and circuit board electricity
Property connection.
Further, the earmuff also includes a loudspeaker, and the loudspeaker is fixedly arranged on the inner surface of the outside housing
On, the loudspeaker is electrically connected with the circuit board.
Further, the circuit board is provided with the first sender, and the sound absorption cotton is provided with the second sender, and described the
One sender and second sender are positioned opposite, and the loudspeaker is housed in two sender.
Further, the interior side body is in tabular, and its middle part is provided with a through hole, the through hole and described second
Sender connects, and the ear pad is surrounded on the periphery of the through hole on the outer surface of the interior side body, the ear
Pad is made by memory foam material.
Further, the sound pick-up is arranged diagonally downward, and angle of inclination is located at 30 ° to 60 °, the suction of the sound absorption cotton
Sonic system number is 0.99.
Further, the circuit board and the sound absorption cotton are connected through a screw thread structure and are fixedly arranged on the outside housing,
The screw connection structure includes some screws and is fixedly arranged on the inner surface of the outside housing and some convex containing screwed hole
Post, each screw sequentially passes through the circuit board and the sound absorption cotton, and spinning is in the screwed hole of a projection
On.
Further, the outside housing is provided with a rubber ring with the position that the interior side body is fastened and connected.
Further, the head hoop includes regulation section and two linkage sections located at the regulation section both ends, the connection
Section includes the first pivot joint block and connecting rod, and the connecting rod is in " C " shape, one end of the connecting rod and the end of the regulation section
Connection, the other end of the connecting rod are installed with the second pivot joint block, and first pivot joint block is fixedly arranged on the end of the regulation section
On, the connecting rod is located at the periphery of the housing, and the housing is articulated in first pivot joint block and second pivot joint
Between block.
Brief description of the drawings
Fig. 1 is the stereogram of the headphone in first embodiment of the invention；
Fig. 2 is the stereogram of another angle of the headphone in first embodiment of the invention；
Fig. 3 is the three-dimensional exploded view of the earmuff in first embodiment of the invention.
Main element symbol description：
| Earmuff | 10 | Head hoop | 20 |
| Housing | 11 | Ear pad | 12 |
| Absorb sound cotton | 13 | Sound pick-up | 14 |
| Circuit board | 15 | Loudspeaker | 16 |
| Interior side body | 111 | Outside housing | 112 |
| Cavity | 113 | Through hole | 1111 |
| Rubber blanket | 141 | Projection | 1 |
| First sender | 151 | Second sender | 131 |
| Adjust section | 21 | Linkage section | 22 |
| First pivot joint block | 221 | Connecting rod | 222 |
| Second pivot joint block | 2221 |
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give some embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is made to the disclosure more thorough and comprehensive.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Refer to Fig. 1 to Fig. 3, the headphone showing in first embodiment of the invention, including two earmuffs 10 and
One head hoop 20, two earmuffs 10 connect through the head hoop 20.
The earmuff includes housing 11, ear pad 12, sound absorption cotton 13, sound pick-up 14, circuit board 15 and loudspeaker 16.
Wherein, the housing 11 includes interior side body 111 and outside housing 112, the interior side body 111 and the outside
Housing 112 is fastened and connected, and to form a cavity 113, the interior side body 111 is in tabular, and its middle part is provided with a through hole
1111, while the outside housing 112 is provided with a rubber ring with the position that the interior side body 111 is fastened and connected and (schemed not
Show), to avoid vibration from transmitting.When wearer wears the headphone, head of the interior side body 111 towards wearer
Portion, the outside housing 112 is then outwardly.
Specifically, the thickness of the housing 11 is 4mm, and the housing 11 is made by PC materials.It should be understood that
In the case of meeting case weight, shaping and requirement, the density of case material is bigger, thickness of shell is bigger and housing on open
Hole area is smaller, then the defening effect of housing is better, therefore among the present embodiment, chooses PC materials as the housing 11
Moulding material, while the thickness of the housing 11 is set as 4mm (thickness of shell of existing earmuff is usually 2mm), with full
Under sufficient requirements, the defening effect of the housing 11 is improved as far as possible.In addition, among other embodiments, the housing 11
Thickness can also be 3mm to the arbitrary value between 4mm.
Wherein, in a ring, the ear pad 12 is surround the ear pad 12 on the outer surface of the interior side body 111
In the periphery of the through hole 1111, the ear pad 12 is made by memory foam material, so that the ear pad 12 can be with
The sufficiently sealed contact of auricle of wearer, prevents noise from entering human ear.
Wherein, the sound absorption cotton 13 is in the cavity 113, and the clear area of the cavity 113 is by the suction
Sound cotton 13 is filled, and the clear area of the cavity 113 is remaining unappropriated space after all components of installation.
In the specific implementation, the shape and size that can extract the clear area of the cavity 113 are used as the sound absorption
The formal parameter of cotton 13, the sound absorption cotton 13 then is being made to mold according to the formal parameter, so that the sound absorption energy of cotton 13
Enough fill all clear areas of the cavity 113.
In addition, the acoustic absorptivity of the sound absorption cotton 13 is 0.99, it can be made by nanometer sound-absorbing material.
One layer of rubber blanket 141 is coated with the lateral wall of the sound pick-up 14, the sound pick-up 14 passes through the rubber blanket
141 are fixedly arranged on the outer surface of the outside housing 112.
In the specific implementation, one can be opened up on the outer surface of the outside housing 112 through the outside housing 112
Mounting hole, then the rubber blanket 141 is nested on the lateral wall of the sound pick-up 14, it is then that the rubber blanket 141 is close
Envelope is arranged in the mounting hole.
In addition, the sound pick-up 13 is arranged diagonally downward, and angle of inclination (with horizontal sextant angle) is 45 °, in other implementations
Among example, the angle of the sound pick-up 13 diagonally downward can also be the arbitrary value between 30 ° to 60 °.
Wherein, the circuit board 15 is connected between the interior side body 111 and the sound absorption cotton 13, the loudspeaker 16
It is fixedly arranged on the inner surface of the outside housing 112.The sound pick-up 13 is electrically connected with the circuit board 15, the loudspeaker
14 are also electrically connected with the circuit board 15, and the voice data that the sound pick-up 13 gathers will be converted into sound by the circuit board 15
Frequency analog signal, then played again through the loudspeaker 14.
Specifically, the circuit board 15 and the sound absorption cotton 13 are connected through a screw thread structure and are fixedly arranged on the outside housing
On, the screw connection structure includes some screw (not shown) and is fixedly arranged on the inner surface of the outside housing and contains screw thread
Some projections 1 in hole, each screw sequentially passes through the circuit board 15 and the sound absorption cotton 13, and spinning is in an institute
On the screwed hole for stating projection 1, the circuit board 15 and the sound absorption cotton 13 are fixed.
In addition, the circuit board 15 is provided with the first sender 151, the sound absorption cotton 13 is provided with the second sender 131,
First sender 151 and second sender 131 are positioned opposite, first sender 151 and the through hole
1111 connections, the loudspeaker 16 are housed in two sender 131, so that the sound that the loudspeaker 16 plays passes through successively
Human ear is passed to after crossing two sender 131, first sender 151 and the through hole 1111.
The head hoop 20 includes regulation section 21 and two linkage sections 22 located at regulation section 21 both ends, each company
Connect in section 22 one earmuff 10 of connection, the regulation section 21 is used for the length for adjusting the head hoop 20, its structure with it is existing
Indifference.
Wherein, the linkage section 22 includes the first pivot joint block 221 and connecting rod 222, and the connecting rod 222 is in " C " shape, institute
The one end for stating connecting rod 222 is connected with the end of the regulation section 21, and the other end of the connecting rod 222 is installed with the second pivot joint
Block 2221, first pivot joint block 221 are fixedly arranged on the end of the regulation section 21, and the connecting rod 222 is located at corresponding institute
The periphery of housing 11 is stated, and the housing 11 is articulated between first pivot joint block 221 and second pivot joint block 2221, with
Rotate the earmuff 10.
To sum up, the headphone among the present embodiment, by setting the sound absorption cotton 13 in the cavity 113, increase
The big acoustical absorptivity of the cavity 113, and the shape and size for extracting the free space of the cavity 113 are used as the suction
The formal parameter of sound cotton 13, so that all clear areas of the cavity 113 can be filled up by the sound absorption cotton 13 so that institute
State sound absorption cotton 13 can Omnibearing absorbing noise, prevent noise to be transmitted to the ear of wearer, passive excellent noise reduction effect.In addition,
The sound pick-up 14 is installed by the rubber blanket 141, avoids being rigidly connected, reduces the vibration transmission between parts, and
By setting the ear pad 12 on the housing 11, so that the ear pad 12 can be in close contact with the auricle of wearer, simultaneously
The thickness and material of housing 11 described in Rational choice, and the structure of earmuff 10 described in reasonable Arrangement, so that the earmuff 10 is full
It is compact-sized in the case that lumping weight amount, shaping and use etc. requires, and reach best defening effect, further increase by
Dynamic noise reduction, the headphone can reach isolates to 36dB noise, meets requirement enough.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of headphone, including head hoop and two earmuffs, two earmuffs connect through the head hoop, its feature exists
In the earmuff includes housing, ear pad, sound absorption cotton and sound pick-up, and the ear pad is on an outer surface of the housing, institute
Sound absorption cotton is stated in the cavity of the housing, and the clear area of the cavity is by the sound absorption cotton filling, the pickup
One layer of rubber blanket is coated with the lateral wall of device, the sound pick-up is fixedly arranged on the housing by the rubber blanket.
2. headphone according to claim 1, it is characterised in that the thickness of the housing be located at 3mm to 4mm it
Between, the housing is made by PC materials.
3. headphone according to claim 1, it is characterised in that the earmuff also includes a circuit board, the shell
Body includes interior side body and outside housing, and the interior side body and the outside housing are fastened and connected, to form the cavity, institute
State circuit board to be connected between the interior side body and the sound absorption cotton, the sound pick-up is fixedly arranged on the appearance of the outside housing
On face, the sound pick-up is electrically connected with the circuit board.
4. headphone according to claim 3, it is characterised in that the earmuff also includes a loudspeaker, described to raise
Sound device is fixedly arranged on the inner surface of the outside housing, and the loudspeaker is electrically connected with the circuit board.
5. headphone according to claim 4, it is characterised in that the circuit board is provided with the first sender, institute
State sound absorption cotton and be provided with the second sender, first sender and second sender are positioned opposite, and the loudspeaker is received
Hold in two sender.
6. headphone according to claim 5, it is characterised in that the interior side body is in tabular, and its middle part is set
There is a through hole, the through hole is connected with second sender, and the ear pad is located on the outer surface of the interior side body,
And the periphery of the through hole is surrounded on, the ear pad is made by memory foam material.
7. headphone according to claim 1, it is characterised in that the sound pick-up is arranged diagonally downward, and is tilted
Angle is located at 30 ° to 60 °, and the acoustic absorptivity of the sound absorption cotton is 0.99.
8. headphone according to claim 3, it is characterised in that the circuit board and the sound absorption cotton pass through screw thread
Attachment structure is fixedly arranged on the outside housing, and the screw connection structure includes some screws and is fixedly arranged on the outside housing
Inner surface and some projections containing screwed hole, each screw sequentially pass through the circuit board and the sound absorption cotton,
And spinning is on the screwed hole of a projection.
9. headphone according to claim 3, it is characterised in that the outside housing fastens with the interior side body
The position of connection is provided with a rubber ring.
10. headphone according to claim 1, it is characterised in that the head hoop includes regulation section and located at described
Adjust two linkage sections at section both ends, the linkage section includes the first pivot joint block and connecting rod, and the connecting rod is in " C " shape, institute
The one end for stating connecting rod is connected with the end of the regulation section, and the other end of the connecting rod is installed with the second pivot joint block, described
First pivot joint block is fixedly arranged on the end of the regulation section, and the connecting rod is located at the periphery of the housing, and the housing pivot
It is connected between first pivot joint block and second pivot joint block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711051270.5A CN107750026A (en) | 2017-10-31 | 2017-10-31 | Head earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711051270.5A CN107750026A (en) | 2017-10-31 | 2017-10-31 | Head earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107750026A true CN107750026A (en) | 2018-03-02 |
Family
ID=61252854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711051270.5A Pending CN107750026A (en) | 2017-10-31 | 2017-10-31 | Head earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107750026A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109089184A (en) * | 2018-03-28 | 2018-12-25 | 广州市神火科技有限公司 | A kind of wear-type pickup noise reduction communication earphone |
| CN109257679A (en) * | 2018-11-30 | 2019-01-22 | 歌尔科技有限公司 | A kind of headphone |
| CN111615031A (en) * | 2020-05-30 | 2020-09-01 | 黄敬 | Novel earphone of making an uproar falls in intelligence |
| CN113475096A (en) * | 2021-05-18 | 2021-10-01 | 深圳市冠旭电子股份有限公司 | Noise reduction ear pad, noise reduction earmuff and head-wearing noise reduction earphone |
| WO2022226792A1 (en) * | 2021-04-27 | 2022-11-03 | 深圳市韶音科技有限公司 | Acoustic input and output device |
| US12014715B2 (en) | 2019-03-22 | 2024-06-18 | Dyson Technology Limited | Noise control |
| US12062355B2 (en) | 2019-03-22 | 2024-08-13 | Dyson Technology Limited | Noise control |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201414207Y (en) * | 2009-05-22 | 2010-02-24 | 张世民 | Noise-reduction power amplifier earphone |
| CN101754066A (en) * | 2008-12-19 | 2010-06-23 | 郑国书 | Headset with function of loudspeaker box |
| CN201528411U (en) * | 2009-06-24 | 2010-07-14 | 张旗璨 | Structure of earshield type earphone |
| CN102487469A (en) * | 2010-12-03 | 2012-06-06 | 深圳市冠旭电子有限公司 | Ear shield and head-mounted noise reduction earphone |
| CN207652635U (en) * | 2017-10-31 | 2018-07-24 | 江西联创电声有限公司 | Head earphone |
-
2017
- 2017-10-31 CN CN201711051270.5A patent/CN107750026A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101754066A (en) * | 2008-12-19 | 2010-06-23 | 郑国书 | Headset with function of loudspeaker box |
| CN201414207Y (en) * | 2009-05-22 | 2010-02-24 | 张世民 | Noise-reduction power amplifier earphone |
| CN201528411U (en) * | 2009-06-24 | 2010-07-14 | 张旗璨 | Structure of earshield type earphone |
| CN102487469A (en) * | 2010-12-03 | 2012-06-06 | 深圳市冠旭电子有限公司 | Ear shield and head-mounted noise reduction earphone |
| CN207652635U (en) * | 2017-10-31 | 2018-07-24 | 江西联创电声有限公司 | Head earphone |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109089184A (en) * | 2018-03-28 | 2018-12-25 | 广州市神火科技有限公司 | A kind of wear-type pickup noise reduction communication earphone |
| CN109257679A (en) * | 2018-11-30 | 2019-01-22 | 歌尔科技有限公司 | A kind of headphone |
| CN109257679B (en) * | 2018-11-30 | 2024-05-10 | 歌尔科技有限公司 | Headset |
| US12014715B2 (en) | 2019-03-22 | 2024-06-18 | Dyson Technology Limited | Noise control |
| US12062355B2 (en) | 2019-03-22 | 2024-08-13 | Dyson Technology Limited | Noise control |
| CN111615031A (en) * | 2020-05-30 | 2020-09-01 | 黄敬 | Novel earphone of making an uproar falls in intelligence |
| WO2022226792A1 (en) * | 2021-04-27 | 2022-11-03 | 深圳市韶音科技有限公司 | Acoustic input and output device |
| CN113475096A (en) * | 2021-05-18 | 2021-10-01 | 深圳市冠旭电子股份有限公司 | Noise reduction ear pad, noise reduction earmuff and head-wearing noise reduction earphone |
| CN113475096B (en) * | 2021-05-18 | 2023-06-09 | 深圳市冠旭电子股份有限公司 | Noise-reducing ear pad, noise-reducing ear cover and head-wearing noise-reducing earphone |
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