CN205793160U - A kind of noise cancelling headphone - Google Patents
A kind of noise cancelling headphone Download PDFInfo
- Publication number
- CN205793160U CN205793160U CN201620477420.3U CN201620477420U CN205793160U CN 205793160 U CN205793160 U CN 205793160U CN 201620477420 U CN201620477420 U CN 201620477420U CN 205793160 U CN205793160 U CN 205793160U
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- CN
- China
- Prior art keywords
- circuit
- loudspeaker
- noise
- noise reduction
- resistance
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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.)
- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The open a kind of noise cancelling headphone of this utility model, it includes control circuit plate and is installed on the loudspeaker on control circuit plate, miaow head, audio input end, described control circuit plate includes audio frequency processing circuit, active noise reduction processes circuit and sound compensates circuit, this audio frequency processing circuit and active noise reduction process circuit and sound compensates circuit and is electrically connected with, these loudspeaker, miaow head, audio input end all process circuit with active noise reduction and are electrically connected with, and loudspeaker positive pole processes circuit by switch with audio input end and active noise reduction and is electrically connected with.During work, active noise reduction processes circuit and 0 degree of the external world noise processed gathered by miaow head is formed the inverse noise of 180 degree, and is transferred to human ear by loudspeaker, now, the inverse noise of 180 degree can 0 degree of noise of human ear incoming with the external world offset, to reach effect of noise reduction.It addition, sound compensates circuit can compensate the noise spectrum of counteracting, ensure the tonequality of sound after noise reduction with this, make this utility model have the high market competitiveness.
Description
Technical field:
This utility model relates to earphone products technical field, refers in particular to a kind of noise cancelling headphone.
Background technology:
Earphone is a kind of device transmitting audio signal, and it is applied widely, often with mobile phone, computer, MP3
Etc. terminal electronics fit applications.Along with the development of science and technology with electron trade, people are for ear
The performance of machine it is also proposed higher requirement.
In order to enjoy music whenever and wherever possible, a lot of people wear earphone to appreciate music, but outside ring
Border has many noises, and normal music is covered by noise, reduces the music experience of earphone user, and
Some people, for the interference abated the noise, can increase volume, this further increases the burden of ear, affects user
Audition.
In view of this present inventor proposes techniques below scheme.
Utility model content:
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of noise cancelling headphone.
In order to solve above-mentioned technical problem, this utility model have employed following technical proposals: this noise cancelling headphone includes
There is control circuit plate and be installed on the loudspeaker on control circuit plate, miaow head, audio input end, described control electricity
Road plate includes audio frequency processing circuit, for the noise treatment gathered by miaow head becomes inverse noise with output to loudspeaker
And offset the active noise reduction of noise that human ear is heard and process circuit and for reducing the noise spectrum offset
Sound compensates circuit, and this audio frequency processing circuit and active noise reduction process circuit and sound compensates circuit and is electrically connected with,
These loudspeaker, miaow head, audio input end all process circuit with active noise reduction and are electrically connected with, and loudspeaker positive pole leaves by one
Close and process circuit electric connection with audio input end and active noise reduction.
Furthermore, in technique scheme, described active noise reduction processes circuit and includes one the oneth IC chip
And be arranged at the peripheral circuit of an IC chip periphery, an IC chip all with switch, loudspeaker, miaow head
Being electrically connected with, IC chip one pin connects after described sound compensates circuit and electrically connects with audio input end
Connect.
Furthermore, in technique scheme, described sound compensates circuit and includes resistance R4, is parallel to
Resistance R4 two ends and the resistance R20 that is connected in series and resistance R16 and be parallel to resistance R4 two ends and go here and there
The electric capacity C11 and electric capacity C13 of connection connection, the most respectively by connecting resistance between this resistance R20 and resistance R16
R21 and/or resistance R22 ground connection；The most respectively by connecting electric capacity C12 between this electric capacity C11 and electric capacity C13
And/or electric capacity C14 ground connection, the switch described in the connection of this electric capacity C11 one end.
Furthermore, in technique scheme, described switch is dual control single connection plane switch, this dual control single connection plane switch
The first foot and an IC chip connect, the crus secunda of this dual control single connection plane switch is connected with loudspeaker positive pole, this pair
3rd foot of control single connection plane switch is connected with audio input end.
Furthermore, in technique scheme, described audio frequency processing circuit include the 2nd IC chip and
The battery unit that is connected with the 2nd IC chip, LED display unit, usb interface unit, push-button unit, miaow head
Input block and loudspeaker driver element, this miaow head input block is connected with described miaow head；This loudspeaker driver element
Being connected with described loudspeaker, described 2nd IC chip is connected with audio input end.
After using technique scheme, this utility model has the advantages that this compared with prior art
During utility model work, when needs realize noise reduction effect, first foot and second of dual control single connection plane switch will be controlled
Foot turns on, and makes active noise reduction process circuit and sound compensates circuit work, with the sound causing audio input end to input
Frequently sound is after active noise reduction processes circuit and sound compensates circuit, is exporting from loudspeaker.Specifically, outward
0 degree of boundary noise can enter active noise reduction from miaow head and process circuit, and this active noise reduction processes circuit by 0 degree of noise
Reason forms the inverse noise of 180 degree, and is transferred to human ear by loudspeaker, now, and the inverse noise meeting of 180 degree
0 degree of noise of human ear incoming with the external world offsets, to reach effect of noise reduction.It addition, sound compensates circuit meeting
Compensate the noise spectrum offset, ensure the tonequality of sound after noise reduction with this, make this utility model have high city
Field competitiveness.
Accompanying drawing illustrates:
Fig. 1 is theory diagram of the present utility model；
Fig. 2 is the circuit diagram that this utility model sound intermediate frequency processes circuit；
Fig. 3 is the circuit diagram that in this utility model, active noise reduction processes circuit and sound compensation circuit.
Detailed description of the invention:
Below in conjunction with specific embodiments and the drawings, this utility model is further illustrated.
As shown in Fig. 1-3, for a kind of noise cancelling headphone, it includes control circuit plate and is installed on control circuit
Loudspeaker 1 on plate, miaow head 2, audio input end 3, wherein, described control circuit plate includes Audio Processing
Circuit 4, for the noise treatment gathered by miaow head 2 becomes inverse noise offset human ear with output to loudspeaker 1
The active noise reduction of the noise heard processes circuit 5 and compensates electricity for reducing the sound of the noise spectrum offset
Road 6, this audio frequency processing circuit 4 and active noise reduction process circuit 5 and sound compensates circuit 6 and is electrically connected with, should
Loudspeaker 1, miaow head 2, audio input end 3 all process circuit 5 with active noise reduction and are electrically connected with, loudspeaker 1 positive pole
Process circuit 5 by a switch 7 with audio input end 3 and active noise reduction to be electrically connected with.
Described active noise reduction processes circuit 5 and includes one the oneth IC chip 51 and be arranged at an IC chip 51
Peripheral peripheral circuit, an IC chip 51 is all electrically connected with switch 7, loudspeaker 1, miaow head 2, should
Oneth IC chip 51 1 pin is electrically connected with audio input end 3 after connecting described sound compensation circuit 6.
Described sound compensate circuit 6 include resistance R4, be parallel to resistance R4 two ends and the electricity that is connected in series
Resistance R20 and resistance R16 and be parallel to resistance R4 two ends and the electric capacity C11 that is connected in series and electric capacity C13,
The most respectively by connecting resistance R21 and/or resistance R22 ground connection between this resistance R20 and resistance R16；This electricity
Hold between C11 and electric capacity C13 the most respectively by connecting electric capacity C12 and/or electric capacity C14 ground connection, this electric capacity C11
Switch 7 described in the connection of one end.
Described switch 7 is dual control single connection plane switch, and the first foot of this dual control single connection plane switch and an IC chip 51 are even
Connecing, the crus secunda of this dual control single connection plane switch is connected with loudspeaker 1 positive pole, the 3rd foot and sound of this dual control single connection plane switch
Frequency input terminal 3 connects.It is to say, when this utility model needs to realize noise reduction effect, dual control list will be controlled
First foot of connection switch turns on crus secunda, passes through actively fall with the audio sound causing audio input end 3 to input
Make an uproar after process circuit 5 and sound compensation circuit 6, exporting from loudspeaker 1.When this utility model need not realize
During noise reduction effect, the 3rd foot controlling dual control single connection plane switch is turned on crus secunda, to cause audio input end 3
The audio sound of input processes circuit 5 without active noise reduction and sound compensation circuit 6 is the most defeated from loudspeaker 1
Go out.
Described audio frequency processing circuit 4 includes the 2nd IC chip 41 and the electricity being connected with the 2nd IC chip 41
Pool unit 42, LED display unit 43, usb interface unit 44, push-button unit 45, miaow head input block 46
And loudspeaker driver element 47, this miaow head input block 46 is connected with described miaow head 2；This loudspeaker driver element
47 are connected with described loudspeaker 1, and described 2nd IC chip 41 is connected with audio input end 3.
During utility model works, when needs realize noise reduction effect, the first foot of dual control single connection plane switch will be controlled
Turn on crus secunda, make active noise reduction process circuit 5 and sound compensates circuit 6 and works, to cause audio frequency to input
The audio sound of end 3 input is after active noise reduction processes circuit 5 and sound compensates circuit 6, from loudspeaker 1
Output.Specifically, extraneous 0 degree of noise can enter active noise reduction from miaow head and process circuit 5, this active noise reduction
Process circuit 5 and 0 degree of noise processed formed the inverse noise of 180 degree, and be transferred to human ear by loudspeaker 1,
Now, the inverse noise of 180 degree can 0 degree of noise of human ear incoming with the external world offset, to reach the merit of noise reduction
Effect.It addition, sound compensates circuit 6 can compensate the noise spectrum of counteracting, ensure the tonequality of sound after noise reduction with this,
This utility model is made to have the high market competitiveness.
Certainly, the foregoing is only specific embodiment of the utility model, not limit this utility model
Practical range, all equivalence changes done according to structure, feature and principle described in this utility model claim
Or modify, all should be included in this utility model claim.
Claims (5)
1. a noise cancelling headphone, its include control circuit plate and the loudspeaker (1) being installed on control circuit plate,
Miaow head (2), audio input end (3),
It is characterized in that: described control circuit plate includes audio frequency processing circuit (4), being used for will be by miaow head (2)
The noise treatment gathered becomes inverse noise to offset the active fall of the noise that human ear is heard to loudspeaker (1) with output
Make an uproar process circuit (5) and for reduce offset noise spectrum sound compensate circuit (6), at this audio frequency
Reason circuit (4) and active noise reduction process circuit (5) and sound compensates circuit (6) and is electrically connected with, these loudspeaker
(1), miaow head (2), audio input end (3) all process circuit (5) electric connection, loudspeaker with active noise reduction
(1) positive pole is electrically connected with audio input end (3) and active noise reduction process circuit (5) by a switch (7)
Connect.
A kind of noise cancelling headphone the most according to claim 1, it is characterised in that: described active noise reduction processes
Circuit (5) includes one the oneth IC chip (51) and is arranged at the periphery that an IC chip (51) is peripheral
Circuit, an IC chip (51) is all electrically connected with switch (7), loudspeaker (1), miaow head (2), should
It is electric with audio input end (3) afterwards that oneth IC chip (51) pin connects described sound compensation circuit (6)
Property connect.
A kind of noise cancelling headphone the most according to claim 2, it is characterised in that: described sound compensates circuit
(6) include resistance R4, be parallel to resistance R4 two ends and the resistance R20 that is connected in series and resistance R16
And be parallel to resistance R4 two ends and the electric capacity C11 that is connected in series and electric capacity C13, this resistance R20 and electricity
The most respectively by connecting resistance R21 and/or resistance R22 ground connection between resistance R16；This electric capacity C11 and electric capacity C13
Between the most respectively by connecting electric capacity C12 and/or electric capacity C14 ground connection, described in this electric capacity C11 one end connects
Switch (7).
A kind of noise cancelling headphone the most according to claim 2, it is characterised in that: described switch (7) is double
Control single connection plane switch, the first foot of this dual control single connection plane switch and an IC chip (51) connect, this dual control simply connected
The crus secunda of switch is connected with loudspeaker (1) positive pole, the 3rd foot of this dual control single connection plane switch and audio input end (3)
Connect.
A kind of noise cancelling headphone the most according to claim 1, it is characterised in that: described audio frequency processing circuit
(4) include the 2nd IC chip (41) and the battery unit (42) being connected with the 2nd IC chip (41),
LED display unit (43), usb interface unit (44), push-button unit (45), miaow head input block (46)
And loudspeaker driver element (47), this miaow head input block (46) is connected with described miaow head (2)；These loudspeaker
Driver element (47) is connected with described loudspeaker (1), described 2nd IC chip (41) and audio input end (3)
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477420.3U CN205793160U (en) | 2016-05-24 | 2016-05-24 | A kind of noise cancelling headphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477420.3U CN205793160U (en) | 2016-05-24 | 2016-05-24 | A kind of noise cancelling headphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205793160U true CN205793160U (en) | 2016-12-07 |
Family
ID=58116302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620477420.3U Expired - Fee Related CN205793160U (en) | 2016-05-24 | 2016-05-24 | A kind of noise cancelling headphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205793160U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107455009A (en) * | 2017-07-03 | 2017-12-08 | 深圳市汇顶科技股份有限公司 | Audio system and earphone |
| WO2019042461A1 (en) * | 2017-09-04 | 2019-03-07 | 深圳市魅动智能股份有限公司 | Microphone structure of earphone front cavity, and earphones |
| CN112866858A (en) * | 2021-01-19 | 2021-05-28 | 维沃移动通信有限公司 | Earphone and noise reduction processing method and device |
-
2016
- 2016-05-24 CN CN201620477420.3U patent/CN205793160U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107455009A (en) * | 2017-07-03 | 2017-12-08 | 深圳市汇顶科技股份有限公司 | Audio system and earphone |
| WO2019042461A1 (en) * | 2017-09-04 | 2019-03-07 | 深圳市魅动智能股份有限公司 | Microphone structure of earphone front cavity, and earphones |
| CN112866858A (en) * | 2021-01-19 | 2021-05-28 | 维沃移动通信有限公司 | Earphone and noise reduction processing method and device |
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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: 20161207 |