CN209267759U - A kind of feedforward active noise reduction earphone heads of built-in microphone and horn single body - Google Patents
A kind of feedforward active noise reduction earphone heads of built-in microphone and horn single body Download PDFInfo
- Publication number
- CN209267759U CN209267759U CN201822145760.8U CN201822145760U CN209267759U CN 209267759 U CN209267759 U CN 209267759U CN 201822145760 U CN201822145760 U CN 201822145760U CN 209267759 U CN209267759 U CN 209267759U
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- China
- Prior art keywords
- chamber enclosure
- noise reduction
- earphone heads
- microphone
- built
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Abstract
The utility model discloses the feedforward active noise reduction earphone heads of a kind of built-in microphone and horn single body, it is characterized by: the earphone heads include preceding chamber enclosure, it is fixedly mounted on chamber enclosure, ante-chamber, loudspeaker sound emitting mouth, venthole are provided on the preceding chamber enclosure, the ante-chamber and lumen form installation cavity, loudspeaker 1 are installed, the lumen is arranged on the middle chamber enclosure in the installation cavity；The earphone heads further include rear chamber enclosure, are fixedly mounted on the middle chamber enclosure, are provided with back cavity and pickup hole on the rear chamber enclosure, wherein being installed with microphone in the back cavity, rear cover is fixedly mounted on the rear chamber enclosure；The utility model reduces environmental noise can listen to relatively sharp music to adverse effects such as hearing user, sense of hearing, moods with lower volume, and then protect hearing, and damage is listened in reduction, be conducive to human health.
Description
Technical field
The utility model relates to earphone heads, and in particular to a kind of feedforward active noise reduction ear of built-in microphone and horn single body
Head.
Background technique
Earphone noise reduction can simply be divided into passive noise reduction (Passive Noise Control, PNC) and active noise reduction
(Active Noise Control, ANC).
Passively noise reduction is to pass through sound using de-noising mechanisms, this mechanism such as absorption, isolation, damping and structure noise eliminations
The interaction of wave and acoustical material or acoustic construction come realize sound can consumption.Passive noise reduction is to have for controlling high-frequency noise
Effect.And to the following low-frequency noise of several hundred hertz, since the wavelength of sound wave is longer, passive noise reduction can not reach ideal effect
Fruit, this just needs active noise reduction.Active noise reduction is divided into feedforward active noise reduction, rear feed active noise reduction and front and back feedback mixing noise reduction again.
Principle of interference of the active noise reduction that feedovers according to wave, using artificial additional sound source, the sound wave for issuing it and Mike
The sound wave for original noise source that wind picks up forms destructive interference to reach the noise reduced purpose that declines.
(i.e. microphone is generally designed in the microphone pickup hole of feed forward noise reduction earphone acquisition ambient noise outwardly on the market at present
Backwards to ear), when such defect is strong wind weather or movement, biggish wind can be generated and made an uproar, influence the effect of active noise reduction with
User experience.
Utility model content
The purpose of this utility model is to provide the feedforward active noise reduction earphone heads of a kind of built-in microphone and horn single body,
Environmental noise is reduced to adverse effects such as hearing user, sense of hearing, moods, relatively sharp music can be listened to lower volume,
And then hearing is protected, damage is listened in reduction, is conducive to human health.
A kind of feedforward active noise reduction earphone heads of built-in microphone and horn single body, it is characterised in that: the earphone heads packet
Preceding chamber enclosure is included, is fixedly mounted on middle chamber enclosure, ante-chamber, loudspeaker sound emitting mouth, venthole, institute are provided on the preceding chamber enclosure
It states ante-chamber and lumen forms installation cavity, loudspeaker 1 are installed, the lumen is arranged on the middle chamber enclosure in the installation cavity；
The earphone heads further include rear chamber enclosure, are fixedly mounted on the middle chamber enclosure, be provided on chamber enclosure after described back cavity and
Rear cover is fixedly mounted on the rear chamber enclosure wherein being installed with microphone in the back cavity in pickup hole.
Further, the direction of the venthole is identical as the direction in the pickup hole, and the direction is oriented direction
Ear.
Further, the axis parallel of the central axes of the venthole and the pickup hole.
Further, the earphone heads further include sound regulating hole, are arranged on the middle chamber enclosure.
Further, the graceful music of the loudspeaker, that is, exportable high, normal, basic frequency equalization, and can produce corresponding with noise reduction
Reverse phase sound wave.
Further, the microphone is the feedforward microphone towards ear.
The utility model has the beneficial effects that: present apparatus structure is simple, ingenious in design；The effect of present apparatus feedforward microphone
It is to pick up external noise and be sent to noise reduction chip, noise reduction chip generates opposite with noise phase after being analyzed relatively noise
Acoustic signal, be then sent through loudspeaker in earphone heads and issue reverse phase sound wave, to offset the environmental noise of incoming human ear, realize master
The effect of dynamic noise reduction makes present apparatus reduction environmental noise to adverse effects such as hearing user, sense of hearing, moods, can be with lower sound
Amount listens to relatively sharp music, and then protects hearing, and damage is listened in reduction, is conducive to human health；The present apparatus utilizes microphone pickup
Direction and noise are more consistent from the direction that ante-chamber venthole enters human ear, so the noise that receives of noise reduction chip is closer to human ear
The noise heard, and then the reverse phase sound wave generated more accurate can effectively cancel out noise；The present apparatus also utilizes the wheat in back cavity
Gram wind is put (i.e. towards ear) inwardly, can effectively reduce high-speed flow by the noise that generates when headset body, further
Improve active noise reduction effect and user experience.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the configuration schematic diagram of the utility model；
Fig. 4 is the configuration schematic diagram of the utility model；
Fig. 5 is the working principle diagram of the utility model.
In figure, loudspeaker 1, preceding chamber enclosure 2, middle chamber enclosure 3, rear chamber enclosure 4, rear cover 5, microphone 6, lumen 7, ante-chamber 8, after
Chamber 9.
Specific embodiment
The following are the better embodiments of the utility model, but therefore do not limit the protection scope of the utility model.
A kind of feedforward active noise reduction earphone heads of built-in microphone and horn single body, it is characterised in that: the earphone heads packet
Chamber enclosure 2 before including, is fixedly mounted on middle chamber enclosure 3, and ante-chamber 8, loudspeaker sound emitting mouth, ventilation are provided on the preceding chamber enclosure 2
Hole, the ante-chamber 8 form installation cavity with lumen 7, and loudspeaker 1 are installed in the installation cavity, and the lumen 7 is arranged in the lumen
On shell 3；The earphone heads further include rear chamber enclosure 4, are fixedly mounted on the middle chamber enclosure 3, are set on the rear chamber enclosure 4
It is equipped with back cavity 9 and pickup hole, wherein being installed with microphone 6 in the back cavity 9, rear cover is fixedly mounted on the rear chamber enclosure 4
5。
Further, the direction of the venthole is identical as the direction in the pickup hole, and the direction is oriented direction
Ear, the axis parallel of the central axes of the venthole and the pickup hole.
Further, the earphone heads further include sound regulating hole, are arranged on the middle chamber enclosure 3；The loudspeaker 1 can be defeated
The graceful music of senior middle school's low frequency equalization out, and can produce reverse phase sound wave corresponding with noise reduction；The microphone 6 is towards ear
Feedforward microphone.
The utility model devises the feedforward active noise reduction earphone heads of a kind of built-in microphone and horn single body: present apparatus knot
Structure is simple, ingenious in design；The effect of present apparatus feedforward microphone is to pick up external noise and be sent to noise reduction chip, and noise reduction chip is to making an uproar
Sound generates the acoustic signal opposite with noise phase after being analyzed relatively, and the loudspeaker being then sent through in earphone heads issue reverse phase sound
Wave realizes the effect of active noise reduction to offset the environmental noise of incoming human ear, so that the present apparatus is reduced environmental noise and listens user
The adverse effects such as power, sense of hearing, mood can be listened to relatively sharp music with lower volume, and then protect hearing, and reduction is listened
Damage is conducive to human health；The present apparatus enters the direction of human ear more from ante-chamber venthole using microphone pickup direction and noise
Unanimously, so the noise that the noise that noise reduction chip receives is heard closer to human ear, and then the reverse phase sound wave generated can be more accurate
Effectively cancel out noise；The present apparatus also utilizes the microphone in back cavity to put inwardly (i.e. towards ear), can effectively reduce height
Fast air-flow passes through the noise generated when headset body, further improves active noise reduction effect and user experience.
Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art
Member for, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. the feedforward active noise reduction earphone heads of a kind of built-in microphone and horn single body, it is characterised in that: the earphone heads include
Preceding chamber enclosure is fixedly mounted on middle chamber enclosure, and ante-chamber, loudspeaker sound emitting mouth, venthole are provided on the preceding chamber enclosure, described
Ante-chamber and lumen form installation cavity, and loudspeaker are installed in the installation cavity, and the lumen is arranged on the middle chamber enclosure；It is described
Earphone heads further include rear chamber enclosure, are fixedly mounted on the middle chamber enclosure, are provided with back cavity and pickup on the rear chamber enclosure
Rear cover is fixedly mounted on the rear chamber enclosure wherein being installed with microphone in the back cavity in hole.
2. the feedforward active noise reduction earphone heads of a kind of built-in microphone according to claim 1 and horn single body, feature
Be: the direction of the venthole is identical as the direction in the pickup hole, and the direction is oriented towards ear.
3. the feedforward active noise reduction earphone heads of a kind of built-in microphone according to claim 1 or 2 and horn single body, special
Sign is: the axis parallel of the central axes of the venthole and the pickup hole.
4. the feedforward active noise reduction earphone heads of a kind of built-in microphone according to claim 1 and horn single body, feature
Be: the earphone heads further include sound regulating hole, are arranged on the middle chamber enclosure.
5. the feedforward active noise reduction earphone heads of a kind of built-in microphone according to claim 1 and horn single body, feature
It is: the graceful music of the i.e. exportable high, normal, basic frequency equalization of the loudspeaker, and can produce reverse phase sound wave corresponding with noise reduction.
6. the feedforward active noise reduction earphone heads of a kind of built-in microphone according to claim 1 and horn single body, feature
Be: the microphone is the feedforward microphone towards ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145760.8U CN209267759U (en) | 2018-12-20 | 2018-12-20 | A kind of feedforward active noise reduction earphone heads of built-in microphone and horn single body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145760.8U CN209267759U (en) | 2018-12-20 | 2018-12-20 | A kind of feedforward active noise reduction earphone heads of built-in microphone and horn single body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209267759U true CN209267759U (en) | 2019-08-16 |
Family
ID=67560465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822145760.8U Expired - Fee Related CN209267759U (en) | 2018-12-20 | 2018-12-20 | A kind of feedforward active noise reduction earphone heads of built-in microphone and horn single body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209267759U (en) |
-
2018
- 2018-12-20 CN CN201822145760.8U patent/CN209267759U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190816 Termination date: 20191220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |