CN208707900U - A kind of noise cancelling headphone - Google Patents
A kind of noise cancelling headphone Download PDFInfo
- Publication number
- CN208707900U CN208707900U CN201821641263.0U CN201821641263U CN208707900U CN 208707900 U CN208707900 U CN 208707900U CN 201821641263 U CN201821641263 U CN 201821641263U CN 208707900 U CN208707900 U CN 208707900U
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- China
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- headset body
- magnet
- noise reduction
- noise
- cancelling headphone
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Abstract
The utility model discloses a kind of noise cancelling headphone.One specific embodiment of the noise cancelling headphone includes headband, in conjunction with the earmuff and earphone for being fixed on headband both ends, earphone includes headset body, the earplug set on headset body, Dolby circuit plate, noise reduction microphone and the loudspeaker for being built in earplug, headset body is removably arranged in earmuff and constitutes reaction type active noise reduction system close to the surface of human ear side, noise reduction microphone and Dolby circuit plate.The embodiment anti-acoustic capability is good.
Description
Technical field
The utility model relates to ear phone technology fields.More particularly, to a kind of noise cancelling headphone.
Background technique
The type of earphone is more and more currently on the market, and the application of earphone has been greatly developed, earphone noise reduction technology
Increasingly it is taken seriously.On the whole, earphone noise reduction mode is divided into passive noise reduction and active noise reduction.
Passive noise reduction is mainly used for carrying out noise reduction to high-frequency noise, uses mechanical isolation ear and external environment, leads to
The obturator of unlike material is crossed to prevent noise from entering ear, obturator include fill in ear with stop outside noise earplug,
Ear is surrounded to form the earmuff etc. in relative closure space, the material of obturator has plastics, foam, silica gel etc., passive noise reduction
Performance is largely dependent upon the material of obturator.
Active noise reduction has obvious effects on the elimination of Middle and low frequency noise, is divided into feed forward type active noise reduction system and reaction type
Active noise reduction system.In feed forward type active noise reduction system, noise reduction microphone is located at outside earphone, directly to pick up outside earphone
Outside noise signal, Dolby circuit plate generate the inversion signal of outside noise signal and are mixed with the audio signal to be played
Superposition obtains mixed audio signal, and loudspeaker plays mixed audio signal, most main to offset the noise signal that ear receives
The characteristics of wanting is that the elimination circuit of noise is open loop.In reaction type active noise reduction system, noise reduction microphone is located inside earphone
Close to the position of loudspeaker, to pick up the internal noise signal near the audio signal and ear that loudspeaker plays, noise reduction simultaneously
Circuit board generates the inversion signal of internal noise signal and carries out mixing with the audio signal to be played and is superimposed to obtain mixed audio
Signal, loudspeaker plays mixed audio signal, to offset the noise signal that ear receives.
Existing earphone noise reduction mode respectively has advantage and disadvantage and suitable environment, accordingly, it is desirable to provide a kind of a variety of noise reductions of combination
Mode advantage, anti-acoustic capability are good and are applicable to the noise cancelling headphone of a variety of environment.
Utility model content
The purpose of this utility model is to provide a kind of a variety of noise reduction mode advantages of combination, anti-acoustic capability are good and applicable
In the noise cancelling headphone of a variety of environment.
In order to achieve the above objectives, the utility model adopts the following technical solutions:
The utility model provides a kind of noise cancelling headphone, including headband, in conjunction be fixed on the headband both ends earmuff, with
And earphone, the earphone include headset body, the earplug set on the headset body, Dolby circuit plate, noise reduction microphone and
It is built in the loudspeaker of earplug, the earmuff is removably arranged in close to the surface of human ear side, the drop in the headset body
Make an uproar microphone and the Dolby circuit plate constitutes reaction type active noise reduction system.
Preferably, the noise reduction microphone is set to the position close to the loudspeaker of the headset body.
Preferably, the feedback signal input terminal of the audio signal output end of the noise reduction microphone and the Dolby circuit plate
Electrical connection, the audio signal output end of the Dolby circuit plate are electrically connected with the audio signal input end of the loudspeaker.
Preferably, the earmuff is recessed inwardly to form holding tank close to the surface of human ear side, and the headset body is detachable
Setting in the holding tank, and the earplug is located at the outside of the holding tank.
Preferably, it is combined in the holding tank and is fixed with the first magnet, the headset body is equipped with corresponding with the first magnet
The second magnet, by the gravitation between first magnet and the second magnet, the headset body and earmuff is fixed connects
It connects.
Preferably, the side wall inner surfaces of the holding tank offer blind hole and form magnet fixed part, and first magnet is solid
It is fixed to be arranged in the magnet fixed part.
Preferably, the headset body is connected in the holding tank.
Preferably, the material of the earplug is foam or silica gel.
The beneficial effects of the utility model are as follows:
Technical solution described in the utility model combines the advantages of passive noise reduction and active noise reduction, and anti-acoustic capability is good, fits
For a variety of environment in indoor and outdoor.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing；
Fig. 1 shows the schematic diagram of noise cancelling headphone provided by the embodiment of the utility model.
Specific embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one below with reference to preferred embodiments and drawings
The explanation of step.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not be limited the protection scope of the present invention.
As shown in Figure 1, the embodiments of the present invention provide a kind of noise cancelling headphone, including headband 10, in conjunction with being fixed on
The earmuff 20 and earphone 30 at 10 both ends of headband, earphone 30 include headset body 31, the earplug 32 set on headset body 31, drop
Noise cancellation circuit plate (not shown), noise reduction microphone 33 and the loudspeaker 34 for being built in earplug 32, headset body 31 are detachable
Earmuff 20 is set close to the surface of human ear side, noise reduction microphone 33 and Dolby circuit plate constitute reaction type active noise reduction system
System.
In the present embodiment, Dolby circuit plate is arranged inside headset body 31.Under normal conditions, drop provided in this embodiment
Earphone of making an uproar includes two earmuffs 20, and two earmuffs 20 are fixedly connected on the both ends of headband 10.Also there is a kind of to exist currently on the market
One end of headband 10 is fixedly connected with the headphone of an earmuff 20, and the present embodiment does not limit this, those skilled in the art
Member can be selected according to actual needs.
Noise cancelling headphone provided in this embodiment, using double passive noise reductions of earmuff combination earplug, actively in conjunction with reaction type
Noise reduction, the advantages of being provided simultaneously with a variety of passive noise reductions and active noise reduction, anti-acoustic capability is good, is suitable for a variety of rings in indoor and outdoor
Border.In addition, due between the headset body 31 and earmuff 20 of earphone 30 using being detachably connected, user can according to actual environment and
Earmuff 20 is removed to the desirability selection of anti-acoustic capability, only with the mode of earplug combination reaction type active noise reduction, this implementation
The application flexibility of example is higher.
In some optional implementations of the present embodiment, noise reduction microphone 33 is set to the close loudspeaking of headset body 31
The position of device 34.Using such implementation, the anti-acoustic capability of reaction type active noise reduction is more preferable.
In some optional implementations of the present embodiment, audio signal output end and the noise reduction electricity of noise reduction microphone 33
The feedback signal input terminal of road plate is electrically connected, and the audio signal output end of Dolby circuit plate and the audio signal of loudspeaker 34 input
End electrical connection.Wherein, Dolby circuit plate may include signal processing circuit, adder, balanced device etc., and signal processing circuit is to noise reduction
The voice signal (including audio signal and noise signal) that microphone 33 picks up is handled, and the reverse phase letter of noise signal is generated
Number, the inversion signal of noise signal and the audio signal to be played are carried out mixing superposition and obtain mixed audio signal by adder,
Balanced device does gain optimization to mixed audio signal, and loudspeaker 34 plays the mixed audio signal after gain optimization.Loudspeaker
Mixed audio signal after 34 gain optimizations played out can eliminate noise after being superimposed with noise signal, realize active noise reduction.
In some optional implementations of the present embodiment, earmuff 20 is recessed inwardly to form appearance close to the surface of human ear side
Receive slot, headset body 31 is removably arranged in holding tank, and earplug 32 is located at the outside of holding tank.It is understood that
The shape of holding tank is corresponding with the shape of headset body 31, so that earplug 32 is located at the outside of holding tank, headset body 31 is whole
Body or part are located in holding tank.When user's use wears mode and wears noise cancelling headphone, earmuff 20 is contacted with human ear, 32 energy of earplug
Enough it is tucked into ear canal.Earmuff 20 and earplug 32 form ear and extraneous dual isolation, can substantially reduce the shadow of outside noise
It rings, and while listening to music does not harass other people, the cohesiveness of sound is good, good tone reference.
In some optional implementations of the present embodiment, is combined in holding tank and be fixed with the first magnet, headset body
31 are equipped with the second magnet corresponding with the first magnet, by the gravitation between the first magnet and the second magnet, headset body 31 with
Earmuff 20 is fixedly connected.
In some optional implementations of the present embodiment, the side wall inner surfaces of holding tank offer blind hole and form magnet
Fixed part, the first magnet are fixed in magnet fixed part.Using the implementation, the first magnet and the second magnet can be reduced
The distance between, to improve the mutual attractive force of the two, improve the bonding strength of headset body 31 and earmuff 20.
In some optional implementations of the present embodiment, headset body 31 is connected in holding tank.
It is understood that magnet arrangement and clamping are optional implementation, between headset body 31 and earmuff 20
Other detachable connection methods can also be used.
In some optional implementations of the present embodiment, the material of earplug 32 is foam or silica gel.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower"
To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitations of the present invention.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connection,
It is also possible to be electrically connected；It can be directly connected, can also can be inside two elements indirectly connected through an intermediary
Connection.For the ordinary skill in the art, it can understand as the case may be above-mentioned term in the present invention
Concrete meaning.
It should be noted that relational terms such as first and second and the like are only in the description of the present invention,
Only it is used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying these realities
There are any actual relationship or orders between body or operation.Moreover, the terms "include", "comprise" or its it is any its
He is intended to non-exclusive inclusion by variant, so that the process, method, article or equipment including a series of elements is not
Only include those elements, but also including other elements that are not explicitly listed, or further include for this process, method,
Article or the intrinsic element of equipment.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in the process, method, article or apparatus that includes the element.
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention, for those of ordinary skill in the art, above explained
On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all
It is the guarantor for belonging to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
Protect the column of range.
Claims (8)
1. a kind of noise cancelling headphone, which is characterized in that including headband, in conjunction with the earmuff and earphone for being fixed on the headband both ends,
The earphone includes headset body, the earplug set on the headset body, Dolby circuit plate, noise reduction microphone and is built in ear
The earmuff is removably arranged in close to the surface of human ear side, the noise reduction microphone in the loudspeaker of plug, the headset body
Reaction type active noise reduction system is constituted with the Dolby circuit plate.
2. noise cancelling headphone according to claim 1, which is characterized in that the noise reduction microphone is set to the headset body
Close to the position of the loudspeaker.
3. noise cancelling headphone according to claim 1, which is characterized in that the audio signal output end of the noise reduction microphone with
The feedback signal input terminal of the Dolby circuit plate is electrically connected, the audio signal output end of the Dolby circuit plate and the loudspeaking
The audio signal input end of device is electrically connected.
4. noise cancelling headphone according to claim 1, which is characterized in that the earmuff is recessed inwardly close to the surface of human ear side
Holding tank is formed, the headset body is removably arranged in the holding tank, and the earplug is located at the holding tank
Outside.
5. noise cancelling headphone according to claim 4, which is characterized in that it is combined in the holding tank and is fixed with the first magnet,
The headset body is equipped with the second magnet corresponding with the first magnet, passes through drawing between first magnet and the second magnet
Power, the headset body are fixedly connected with the earmuff.
6. noise cancelling headphone according to claim 5, which is characterized in that the side wall inner surfaces of the holding tank offer blind hole
Magnet fixed part is formed, first magnet is fixed in the magnet fixed part.
7. noise cancelling headphone according to claim 4, which is characterized in that the headset body is connected in the holding tank.
8. noise cancelling headphone according to claim 1, which is characterized in that the material of the earplug is foam or silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641263.0U CN208707900U (en) | 2018-10-10 | 2018-10-10 | A kind of noise cancelling headphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641263.0U CN208707900U (en) | 2018-10-10 | 2018-10-10 | A kind of noise cancelling headphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208707900U true CN208707900U (en) | 2019-04-05 |
Family
ID=65947953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821641263.0U Active CN208707900U (en) | 2018-10-10 | 2018-10-10 | A kind of noise cancelling headphone |
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|---|---|
| CN (1) | CN208707900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110896514A (en) * | 2019-12-20 | 2020-03-20 | 晨诚兴科技深圳有限公司 | Noise reduction earphone |
-
2018
- 2018-10-10 CN CN201821641263.0U patent/CN208707900U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110896514A (en) * | 2019-12-20 | 2020-03-20 | 晨诚兴科技深圳有限公司 | Noise reduction earphone |
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