CN207732931U - A kind of feedback noise reduction bluetooth headset - Google Patents
A kind of feedback noise reduction bluetooth headset Download PDFInfo
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- CN207732931U CN207732931U CN201721831447.9U CN201721831447U CN207732931U CN 207732931 U CN207732931 U CN 207732931U CN 201721831447 U CN201721831447 U CN 201721831447U CN 207732931 U CN207732931 U CN 207732931U
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- noise reduction
- bluetooth headset
- feedback noise
- chip
- ams3435
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- 238000007599 discharging Methods 0.000 claims abstract description 25
- 239000013078 crystal Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 238000006757 chemical reactions by type Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Headphones And Earphones (AREA)
Abstract
The utility model discloses a kind of feedback noise reduction bluetooth headsets, it includes Bluetooth audio frequency chip CSR8635, audio-frequency amplifier, integrated transporting discharging chip AMS3435, feedback microphones, left earphone speaker, right headphone loudspeaker, left filter and right filter, the Bluetooth audio frequency chip CSR8635 is connected by the audio-frequency amplifier with the integrated transporting discharging chip AMS3435, and the integrated transporting discharging chip AMS3435 is connected with the feedback microphones, the left earphone speaker, the right headphone loudspeaker, the left filter and the right filter respectively.The feedback noise reduction bluetooth headset of the utility model has the advantages that excellent noise reduction effect and development cost is low.
Description
Technical field
The utility model is related to earphone field more particularly to a kind of feedback noise reduction bluetooth headsets.
Background technology
With the fast development of science and technology and being constantly progressive for nation-building, also there is unprecedented make an uproar in our life
Sound keeps our living environment more and more severe, noise when such as taking off, the various electric drills and knock of urban construction.
According to World Health Organization（The World Health Organization）On 2 25th, 2015 news releases, someone occur hearing and health thus
Problem, so alleviating the earphone of our sense of hearing pressure --- noise cancelling headphone.
However, the noise cancelling headphone of the prior art has that noise reduction is unstable and development cost is high.
Utility model content
The purpose of this utility model is in view of the above-mentioned drawbacks of the prior art, providing a kind of excellent noise reduction effect and exploitation
Feedback noise reduction bluetooth headset at low cost.
In the utility model embodiment, a kind of feedback noise reduction bluetooth headset is provided comprising Bluetooth audio frequency chip
CSR8635, audio-frequency amplifier, integrated transporting discharging chip AMS3435, feedback microphones, left earphone speaker, right headphone loudspeaker,
Left filter and right filter, the Bluetooth audio frequency chip CSR8635 pass through the audio-frequency amplifier and the integrated transporting discharging core
Piece AMS3435 is connected, the integrated transporting discharging chip AMS3435 respectively with the feedback microphones, the left earphone speaker,
The right headphone loudspeaker, the left filter are connected with the right filter.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the integrated transporting discharging chip
The earphone wireline interface that AMS3435 is connected.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the integrated transporting discharging chip
The switch key that AMS3435 is connected.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the integrated transporting discharging chip
The LED light that AMS3435 is connected.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the integrated transporting discharging chip
The earphone wireline interface that AMS3435 is connected.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the Bluetooth audio frequency chip
The voice that CSR8635 is connected inputs microphone.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the Bluetooth audio frequency chip
The Bluetooth antenna that CSR8635 is connected.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the integrated transporting discharging chip
The crystal oscillator that AMS3435 is connected.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the integrated transporting discharging chip
The battery that AMS3435 is connected.
In the utility model embodiment, the feedback noise reduction bluetooth headset further includes and the integrated transporting discharging chip
The storage chip that AMS3435 is connected.
Compared with prior art, the utility model feedback noise reduction bluetooth headset captures environment by feedback microphones and makes an uproar
Sound carries out frequency-selecting section to the signal included by electronic circuit, reversely, amplifies, compensation generates a reverse signal, by raising
Sound device plays back, and to be offseted with environmental noise, achievees the effect that noise reduction, excellent noise reduction effect, circuit is simple, at low cost.
Description of the drawings
Fig. 1 is the schematic diagram of the feedback noise reduction bluetooth headset of the utility model embodiment.
Specific implementation mode
As shown in Figure 1, providing a kind of feedback noise reduction bluetooth headset comprising Bluetooth audio frequency chip CSR8635 10, sound
Audio amplifier 20, integrated transporting discharging chip AMS3435 30, feedback microphones 40, left earphone speaker 50, right headphone loudspeaker 60,
Left filter 70 and right filter 80, the Bluetooth audio frequency chip CSR8635 10 pass through the audio-frequency amplifier 20 and the collection
Be connected at amplifier chip AMS3435 30, the integrated transporting discharging chip AMS3435 30 respectively with the feedback microphones 40,
The left earphone speaker 50, the right headphone loudspeaker 60, the left filter 70 are connected with the right filter 80.
Bluetooth audio frequency chip CSR8635 10 is for receiving the audio signal that the mobile terminals such as mobile phone send over, the sound
For audio amplifier 20 for being amplified to the audio signal, the feedback microphones 40 are used for picking up surrounding sounds, the ring
Border sound is delivered to the left filter 70 and right filter 80, institute after amplifying in the integrated transporting discharging chip AMS3435 30
It states left filter 70 and right filter 80 and frequency-selecting section is carried out to the ambient sound after after amplification, reversely, amplify, compensation generates one
A reverse signal is played back by the left earphone speaker 50 and right headphone loudspeaker 60.
Further, the feedback noise reduction bluetooth headset further includes being connected with the Bluetooth audio frequency chip CSR8635 10
Voice input microphone 11, USB charging interface 12, crystal oscillator 13, battery 14 and storage chip 15 and Bluetooth antenna 16.
The voice input microphone 11 is used to obtain the voice signal of the input of user.The battery 14 is for providing electric energy.It is described
USB charging interface 12 is for being provided as the charging of the battery 14.The crystal oscillator 13 is used to be the Bluetooth audio frequency chip
CSR8635 10 provides clocking capability.The storage chip 15 is used to provide storage for the Bluetooth audio frequency chip CSR8635 10
Space.The Bluetooth antenna 16 provides wireless blue tooth transmission-receiving function for the Bluetooth audio frequency chip CSR8635 10.
Further, the feedback noise reduction bluetooth headset further includes being connected with the integrated transporting discharging chip AMS3435 30
Earphone wireline interface 31, switch key 32 and LED light 33.The earphone wireline interface 31 is used to obtain by earphone cable
The audio signal of the music players such as mobile phone.The switch key 12 is for controlling opening for the feedback noise reduction bluetooth headset
It closes.The LED light 33 is used to indicate the working condition of the feedback noise reduction bluetooth headset.
In conclusion the utility model feedback noise reduction bluetooth headset, captures environmental noise by feedback microphones, passes through electricity
Sub-line road carries out frequency-selecting section to the signal included, and reversely, amplifies, and compensation generates a reverse signal, played out by loud speaker
Come, to be offseted with environmental noise, achievees the effect that noise reduction, excellent noise reduction effect, circuit is simple, at low cost；The utility model
The eliminable band limits of reaction type noise cancelling headphone：20Hz-1KHz can be used for various reaction type noise cancelling headphone products.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of feedback noise reduction bluetooth headset, which is characterized in that including Bluetooth audio frequency chip CSR8635, audio-frequency amplifier, integrate
Amplifier chip AMS3435, feedback microphones, left earphone speaker, right headphone loudspeaker, left filter and right filter, it is described
Bluetooth audio frequency chip CSR8635 is connected by the audio-frequency amplifier with the integrated transporting discharging chip AMS3435, described integrated
Amplifier chip AMS3435 respectively with the feedback microphones, the left earphone speaker, the right headphone loudspeaker, the left side
Filter is connected with the right filter.
2. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The earphone wireline interface being connected with the integrated transporting discharging chip AMS3435.
3. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The switch key being connected with the integrated transporting discharging chip AMS3435.
4. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The LED light being connected with the integrated transporting discharging chip AMS3435.
5. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The Bluetooth antenna being connected with the Bluetooth audio frequency chip CSR8635.
6. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The voice input microphone being connected with the Bluetooth audio frequency chip CSR8635.
7. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The USB charging interface being connected with the integrated transporting discharging chip AMS3435.
8. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The crystal oscillator being connected with the integrated transporting discharging chip AMS3435.
9. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset further includes
The battery being connected with the integrated transporting discharging chip AMS3435.
10. feedback noise reduction bluetooth headset as described in claim 1, which is characterized in that the feedback noise reduction bluetooth headset also wraps
Include the storage chip being connected with the integrated transporting discharging chip AMS3435.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831447.9U CN207732931U (en) | 2017-12-25 | 2017-12-25 | A kind of feedback noise reduction bluetooth headset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831447.9U CN207732931U (en) | 2017-12-25 | 2017-12-25 | A kind of feedback noise reduction bluetooth headset |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207732931U true CN207732931U (en) | 2018-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721831447.9U Expired - Fee Related CN207732931U (en) | 2017-12-25 | 2017-12-25 | A kind of feedback noise reduction bluetooth headset |
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| Country | Link |
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| CN (1) | CN207732931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383860A (en) * | 2020-12-03 | 2021-02-19 | 无锡中感微电子股份有限公司 | Active noise reduction system, self-adaptive calibration analog filter circuit and earphone |
-
2017
- 2017-12-25 CN CN201721831447.9U patent/CN207732931U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383860A (en) * | 2020-12-03 | 2021-02-19 | 无锡中感微电子股份有限公司 | Active noise reduction system, self-adaptive calibration analog filter circuit and earphone |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20191225 |