CN109104657A - Multi-loudspeaker active noise reduction earphone - Google Patents
Multi-loudspeaker active noise reduction earphone Download PDFInfo
- Publication number
- CN109104657A CN109104657A CN201810830130.6A CN201810830130A CN109104657A CN 109104657 A CN109104657 A CN 109104657A CN 201810830130 A CN201810830130 A CN 201810830130A CN 109104657 A CN109104657 A CN 109104657A
- Authority
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- China
- Prior art keywords
- loudspeaker
- noise reduction
- active noise
- reduction earphone
- loudspeakers
- 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
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- 238000013016 damping Methods 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 208000002925 dental caries Diseases 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 208000009205 Tinnitus Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000005236 sound signal 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)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention discloses a multi-loudspeaker active noise reduction earphone, which comprises an earphone shell and a noise reduction pickup, and is characterized in that: the earphone also comprises at least two loudspeakers which are arranged in the earphone shell and are perpendicular to each other, wherein one loudspeaker is used for playing a noise signal, and the other loudspeaker is used for playing a music signal; the front and back cavities of the two loudspeakers are mutually independent, so that mutual interference is prevented. The invention can improve the noise reduction effect and the tone quality, reduce the mutual interference of the two loudspeakers and realize the perfect combination of noise reduction and high-quality music reproduction.
Description
Technical field
The present invention relates to noise cancelling headphone fields, especially there is the active noise reduction earphone of multiple loudspeakers.
Background technique
The basic principle of traditional active noise reduction earphone is as shown in Figure 1.Ambient external noise 1 is picked up by sound pick-up 2 into electricity
Signal, then reversed and amplification is carried out by controller 3, later with loudspeaker 4 reset out one it is in the same size with environmental noise 1,
The signal 5 of opposite in phase, the two signals are cancelled out each other, to eliminate the noise for passing to human ear.
Noise cancelling headphone on the market is all with a speaker operation at present, and not only having played de-noising signal again, broadcasting music is believed
Number.Requirement of the music with noise reduction to loudspeaker response is different due to playing, and the loudspeaker of the noise cancelling headphone of this design can only be
An equalization point is found between sound quality and noise reduction, therefore sound quality and noise reduction can not all reach optimum state.
The utility model patent that number of patent application is 201721491777.8 discloses a kind of multi-loudspeaker active noise reduction ear
Machine scheme.Noise signal and music signal are inputted different loudspeakers by the program respectively, so that partial avoids drawbacks described above.
But more loudspeakers of the program are fixed on the same preceding baffle, this will lead to mutual shadow when several speaker operations
It rings.Especially noise reduction speaker operation when, can be music loudspeaker as load, to generate a resonance.This resonance
It can not only allow the frequency response of noise reduction loudspeaker to be deteriorated, also will greatly affect its phase response, to seriously affect noise reduction effect
Fruit.It is this to influence mainly from two aspects: first is that when noise reduction speaker operation, when in Acoustic Wave Propagation to air,
The vibrating diaphragm of music loudspeaker can become a resonator system, absorb the sound wave in air and generate a resonance peak and valley；Second is that
Since two loudspeakers are fixed on the same baffle, the vibration that noise reduction speaker operation generates is transmitted to an other loudspeaker
When, in addition a loudspeaker can passively shake to generate the original signal of a signal interference.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of multi-loudspeaker active noise reduction earphone, noise reduction and
Music playback is responsible for by different loudspeakers respectively, and influencing each other for different loudspeakers is isolated, the sound quality obtained it is same
Shi Gaishan noise reduction effect.
The technical solution adopted by the present invention is that:
A kind of multi-loudspeaker active noise reduction earphone, including ear casing, and the sound pick-up being set in auricular concha, it is characterised in that:
At least two loudspeakers being mounted in different directions on different baffles, the microphone pickup is provided in auricular concha to make an uproar
Wherein a loudspeaker is to realize noise reduction by being admitted to after specifically handling for sound signal, and in addition a loudspeaker is for specially broadcasting
Playback music signal.
Further, in order to avoid two loudspeakers are influenced each other by vibration, two loudspeaking central axes angles are made into
90 degree, the vibration direction of such two loudspeakers is mutually perpendicular to, and mutual influence minimizes.
Further, in order to two interfering with each other for loudspeaker front sound wave are minimized, allow two loudspeakers just
Respectively to two different cavity radiative acoustic waves, at least one conduit is arranged between two cavitys, and set in conduit in face
Set damping material.Thus the direct interference of two loudspeaker front sound waves is spaced from each other, and by adjusting damping material
Damping characteristic an optimal balance point can be found between sound quality and interference.
Further, in order to avoid two loudspeaker back side sound waves interfere with each other, two loudspeakers are installed on two phases
In mutual independent cavity, and all only communicated with ambient atmosphere.It thus can be to avoid the mutual of two loudspeaker back side sound waves
Interference.
The invention has the benefit that the sound quality that can have been obtained while the noise reduction effect guaranteed, solves sound
Influencing each other between the contradiction that matter and noise reduction can not get both and more loudspeakers.
Detailed description of the invention
A specific embodiment of the invention is described further with reference to the accompanying drawing.
Fig. 1 is the basic schematic diagram of traditional active noise reduction earphone.
Fig. 2 is the sectional view of the embodiment of the present invention headset main body.
Fig. 3 is that the present invention is applied to wear the implementation simplified schematic diagram of noise cancelling headphone.
Fig. 4 is the implementation simplified schematic diagram that the present invention is applied to ear noise-reducing headphone.
Specific embodiment
Design of the invention, structure and technical effect are completely described with attached drawing with reference to embodiments.It is retouched
The embodiment stated is a part of the embodiments of the present invention, and those skilled in the art is without creative efforts
Other embodiments obtained, all belong to the scope of protection of the present invention.
As shown in Fig. 2, a kind of multi-loudspeaker active noise reduction earphone, including ear casing 1 and the pickup being set in ear casing 1
Device 7 and circuit board 8 are additionally provided with orthogonal baffle 31 and baffle 32, the baffle 31 and baffle 32 in the ear casing 1
Space in auricular concha 1 is separated into two mutually independent cavitys 51 and cavity 52, is provided with special use on the baffle 31
In the loudspeaker 21 for playing noise signal, the working space of loudspeaker 21 is separated into ante-chamber 54 and back cavity 51 by the baffle 31；
It is provided on the baffle 32 dedicated for playing the loudspeaker 22 of music signal, the baffle 32 is empty the work of loudspeaker 22
Between be separated into ante-chamber 53 and back cavity 52；The baffle 32 is isolated into cavity 53 from cavity 51 independence with baffle 33 jointly
Seal cavity, the cavity 53 is connected with conduit 43, is provided with damping material 6 in the conduit 43.
The sound pick-up 7, which picks up, to carry out necessary filtering, reverse phase in the noise signal feeding circuit board 8 in cavity 54 and puts
Identical as environmental noise amplitude, opposite in phase a noise signal is generated in cavity 54 by loudspeaker 21 after big processing,
Two noises cancel out each other to realize the purpose of noise reduction.
The central axes angle theta of the loudspeaker 21 and loudspeaker 22 is between 70 degree to 110 degree, in this way when two loudspeakings
The vibration that device generates when working just is mutually perpendicular to.The two orthogonal shock waves of column, mutual influence be it is the smallest, thus
Two loudspeakers are reduced to by the influence that earthquake degree generates minimum between each other.
The sound wave that 21 back side of loudspeaker generates communicates with the outside world in cavity 51, and through aperture 41；The loudspeaking
The sound wave that 22 back side of device generates communicates with the outside world in cavity 52, and through aperture 42；The cavity 51 and cavity 52 are mutually solely
It is vertical, the sound wave at two loudspeaker back sides is separated, prevents from influencing each other.
In the 22 head-on radiation sound wave to cavity 53 of loudspeaker, entered by the conduit 43 being connected with the cavity 53
Cavity 54 merges in cavity 54 with the sound wave that loudspeaker 21 generates and travels to human ear jointly；It is also set in the conduit 43
It is equipped with damping material 6, by adjusting the damping characteristic of damping material 6, one can be found in sound quality and between influencing each other most
Good equalization point.
It is headset main body part of the invention above.As shown in figure 3, increasing ear pad 91 in main part may make up one
Wear active noise reduction earphone.As shown in figure 4, main part increase a conduit 54 and ear pad 92 i.e. and may make up one it is In-Ear
Active noise reduction earphone.
It is to be appreciated that described above is a relatively good embodiment of the invention, the invention is not limited to above-mentioned
Embodiment shall fall within the protection scope of the present invention as long as reaching technical effect of the invention with identical means.
Claims (6)
1. a kind of multi-loudspeaker active noise reduction earphone, including ear casing and sound pick-up, it is characterised in that: at least wrapped in the auricular concha
Containing two loudspeakers, wherein a loudspeaker is for playing de-noising signal, a loudspeaker is for playing music signal；Described two
Loudspeaker is separately mounted in different directions on different baffles, and the space of speaker operation is separated into phase by the baffle
Mutual independent ante-chamber and back cavity.
2. being based on multi-loudspeaker active noise reduction earphone described in claim 1, it is characterised in that: two loudspeaker central axes
Angle is between 70 degree to 110 degree.
3. based on multi-loudspeaker active noise reduction earphone described in claim 1,2, it is characterised in that: before two loudspeakers
Chamber is mutually indepedent, wherein the sound wave of loudspeaker radiation is got to described in other one at least through a cavity and conduit
The ante-chamber of loudspeaker.
4. being based on multi-loudspeaker active noise reduction earphone as claimed in claim 3, it is characterised in that: be provided with tune in the conduit
The damping material of section damping size.
5. based on multi-loudspeaker active noise reduction earphone described in claim 1 ~ 4, it is characterised in that: after two loudspeakers
Chamber is mutually indepedent.
6. based on multi-loudspeaker active noise reduction earphone described in claim 1 ~ 5, it is characterised in that: be provided with control in the auricular concha
Circuit board processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830130.6A CN109104657A (en) | 2018-07-26 | 2018-07-26 | Multi-loudspeaker active noise reduction earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830130.6A CN109104657A (en) | 2018-07-26 | 2018-07-26 | Multi-loudspeaker active noise reduction earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109104657A true CN109104657A (en) | 2018-12-28 |
Family
ID=64847552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810830130.6A Pending CN109104657A (en) | 2018-07-26 | 2018-07-26 | Multi-loudspeaker active noise reduction earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109104657A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112312256A (en) * | 2020-07-30 | 2021-02-02 | 深圳市逸音科技有限公司 | Intelligent active noise reduction earphone based on digital communication |
| WO2021098014A1 (en) * | 2019-11-22 | 2021-05-27 | 歌尔股份有限公司 | Active noise reduction acoustic unit and sound-generating body |
| CN115002595A (en) * | 2022-04-21 | 2022-09-02 | 深圳市华冠智联科技有限公司 | Energy-saving control method, device and equipment for earphone and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222047A (en) * | 1997-12-27 | 1999-07-07 | 株式会社村田制作所 | Speaker |
| JP2009017485A (en) * | 2007-07-09 | 2009-01-22 | Audio Technica Corp | Headphone |
| US20160316297A1 (en) * | 2015-04-27 | 2016-10-27 | Lab9 Inc. | Multi-loudspeaker active noise cancelling headphone providing stereo effct and improved ambient noise reduction |
| CN206042283U (en) * | 2016-08-18 | 2017-03-22 | 万魔声学科技有限公司 | Initiative noise control earphone |
| CN207410494U (en) * | 2017-11-10 | 2018-05-25 | 珠海洛可科技有限公司 | A kind of multi-loudspeaker active noise reduction earphone |
| CN108243363A (en) * | 2017-12-20 | 2018-07-03 | M&O电子公司 | The noise cancelling headphone of the double acoustic paths of physical separation formula |
-
2018
- 2018-07-26 CN CN201810830130.6A patent/CN109104657A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222047A (en) * | 1997-12-27 | 1999-07-07 | 株式会社村田制作所 | Speaker |
| JP2009017485A (en) * | 2007-07-09 | 2009-01-22 | Audio Technica Corp | Headphone |
| US20160316297A1 (en) * | 2015-04-27 | 2016-10-27 | Lab9 Inc. | Multi-loudspeaker active noise cancelling headphone providing stereo effct and improved ambient noise reduction |
| CN206042283U (en) * | 2016-08-18 | 2017-03-22 | 万魔声学科技有限公司 | Initiative noise control earphone |
| CN207410494U (en) * | 2017-11-10 | 2018-05-25 | 珠海洛可科技有限公司 | A kind of multi-loudspeaker active noise reduction earphone |
| CN108243363A (en) * | 2017-12-20 | 2018-07-03 | M&O电子公司 | The noise cancelling headphone of the double acoustic paths of physical separation formula |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098014A1 (en) * | 2019-11-22 | 2021-05-27 | 歌尔股份有限公司 | Active noise reduction acoustic unit and sound-generating body |
| CN112312256A (en) * | 2020-07-30 | 2021-02-02 | 深圳市逸音科技有限公司 | Intelligent active noise reduction earphone based on digital communication |
| CN112312256B (en) * | 2020-07-30 | 2023-08-01 | 深圳市逸音科技有限公司 | Intelligent active noise reduction earphone based on digital communication |
| CN115002595A (en) * | 2022-04-21 | 2022-09-02 | 深圳市华冠智联科技有限公司 | Energy-saving control method, device and equipment for earphone and storage medium |
| CN115002595B (en) * | 2022-04-21 | 2023-03-28 | 广东华冠智联科技有限公司 | Energy-saving control method, device and equipment for earphone and storage medium |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181228 |
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| WD01 | Invention patent application deemed withdrawn after publication |