CN109949790A - Active noise reduction system in feed forward type room - Google Patents
Active noise reduction system in feed forward type room Download PDFInfo
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- CN109949790A CN109949790A CN201910190161.4A CN201910190161A CN109949790A CN 109949790 A CN109949790 A CN 109949790A CN 201910190161 A CN201910190161 A CN 201910190161A CN 109949790 A CN109949790 A CN 109949790A
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- bone conduction
- sound
- conduction vibrator
- noise reduction
- glass
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- 210000000988 bone and bone Anatomy 0.000 claims abstract description 34
- 239000011521 glass Substances 0.000 claims abstract description 27
- 230000003321 amplification Effects 0.000 claims abstract description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 17
- 230000005534 acoustic noise Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 208000020358 Learning disease Diseases 0.000 description 1
- 208000009205 Tinnitus Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 201000003723 learning disability Diseases 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 231100000886 tinnitus Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention provides active noise reduction system in a kind of feed forward type room, including sound receiving module, sound processing module, reverse phase Dolby circuit, emitter follower, bone conduction vibrator, the sound receiving module is sequentially connected electrically with sound processing module, emitter follower, bone conduction vibrator, and the sound that sound receiving module acquires is become analog electrical signal by positive amplification, emitter follower, reversed amplification output to bone conduction vibrator by sound processing module.Bone conduction vibrator makes glass generate the vibration opposite with acoustic phase, to inhibit the vibration of glass, so that acoustic noise reducing.
Description
Technical field
The present invention relates to noise noise reduction technology field, active noise reduction system in specially a kind of feed forward type room.
Background technique
The place of people's life and work is flooded with various environmental noises, such as at home and work unit, has outside window
Various noisy traffic noises；Noise pollution, atmosphere pollution, water pollution and noxious waste pollution have been cited as today's society
Four overall situation are public
Evil.It is especially exposed in noise pollution when excessively, not only people can be allowed to have the fidgets, seriously affect sleep and mental health,
Also can
Cause the diseases such as learning disorder and tinnitus, or even increase the risk for the diseases such as suffer from a heart complaint, to reduce the service life of people.Cause
This,
How main problem one of that noise pollution have become 21 century under the new situation environment pollution control is reduced.
Summary of the invention
The present invention provides active noise reduction system in a kind of feed forward type room, including sound receiving module, sound processing module, anti-
Phase Dolby circuit, emitter follower, bone conduction vibrator, the sound receiving module and sound processing module, emitter follower, bone conduction vibrator
Be sequentially connected electrically, sound processing module by the sound that sound receiving module acquires become analog electrical signal by positive amplification, penetrate
With device, reversed amplification output to bone conduction vibrator.Bone conduction vibrator makes glass generate the vibration opposite with acoustic phase, to press down
The vibration of glass processed, so that acoustic noise reducing.
It is specific:
The sound receiving module and sound processing module can be used as microphone circuit:
Microphone circuit is made of condenser type post pole body microphone pickup device and its biasing circuit, positive amplifying circuit.Positive amplification
Device uses Texas Instrument LM386 type low-voltage audio-frequency amplifier (LM386 Low Voltage Audio Power
Amplifier), adjustable gain.
Inverter cricuit also uses LM386 type amplifier, adjustable gain.
Further, active noise reduction system further includes bluetooth module, bluetooth module and bone conduction vibrator in the feed forward type room
Electrical connection vibrates the effect that glass realizes broadcasting music by bone conduction vibrator.Specifically, bluetooth module using JDY-64 type without
Damage Bluetooth audio frequency unit.
The beneficial effect of the technical program
1, compared with traditional noise reduction technology, this technology is attached on indoor glass using bone conduction vibrator, by direction vibration from
And the vibration that outdoor noise generates glass is offset, system is relatively simple, convenient for promoting the use of.
2, bluetooth module is added, bluetooth module connection mobile phone, bluetooth mould can be opened when interior does not need noise reduction
Sound source signal is transmitted in the bone conduction vibrator being attached on glass by block, by shaking so that glass sounding, the sound field of music
Very greatly and with ornamental value.
Detailed description of the invention
Fig. 1 is particular circuit configurations schematic diagram of the invention.
Fig. 2 is microphone circuit schematic diagram of the invention.
Fig. 3 is negater circuit schematic diagram of the invention.
Specific embodiment
Illustrate a specific embodiment of the invention with reference to the accompanying drawing.
Embodiment one
In conjunction with Fig. 1, particular circuit configurations schematic diagram of the invention, active noise reduction system in feed forward type room, including sound receives mould
Block, sound processing module, reverse phase Dolby circuit, emitter follower, bone conduction vibrator, the sound receiving module and acoustic processing mould
Block, emitter follower, bone conduction vibrator are sequentially connected electrically, and the sound that sound receiving module acquires is become simulation electricity by sound processing module
Signal is by positive amplification, emitter follower, reversed amplification output to bone conduction vibrator.Bone conduction vibrator generates glass and sound wave phase
The opposite vibration in position, to inhibit the vibration of glass, so that acoustic noise reducing.
It is specific:
The sound receiving module and sound processing module can be used as microphone circuit: reference Fig. 2,
Microphone circuit is made of condenser type post pole body microphone pickup device and its biasing circuit, positive amplifying circuit.Positive amplification
Device uses Texas Instrument LM386 type low-voltage audio-frequency amplifier (LM386 Low Voltage Audio Power
Amplifier), adjustable gain.
LM386 type amplifier, adjustable gain are also used referring to Fig. 3, inverter cricuit.
Embodiment two
In conjunction with Fig. 1, particular circuit configurations schematic diagram of the invention, active noise reduction system in feed forward type room, including sound receives mould
Block, sound processing module, reverse phase Dolby circuit, emitter follower, bone conduction vibrator, the sound receiving module and acoustic processing mould
Block, emitter follower, bone conduction vibrator are sequentially connected electrically, and the sound that sound receiving module acquires is become simulation electricity by sound processing module
Signal is by positive amplification, emitter follower, reversed amplification output to bone conduction vibrator.Bone conduction vibrator generates glass and sound wave phase
The opposite vibration in position, to inhibit the vibration of glass, so that acoustic noise reducing.
It is specific:
The sound receiving module and sound processing module can be used as microphone circuit: reference Fig. 2,
Microphone circuit is made of condenser type post pole body microphone pickup device and its biasing circuit, positive amplifying circuit.Positive amplification
Device uses Texas Instrument LM386 type low-voltage audio-frequency amplifier (LM386 Low Voltage Audio Power
Amplifier), adjustable gain.
LM386 type amplifier, adjustable gain are also used referring to Fig. 3, inverter cricuit.
Further, active noise reduction system further includes bluetooth module, bluetooth module and bone conduction vibrator in the feed forward type room
Electrical connection vibrates the effect that glass realizes broadcasting music by bone conduction vibrator.Specifically, bluetooth module using JDY-64 type without
Damage Bluetooth audio frequency unit.
Embodiment three
In conjunction with Fig. 1, particular circuit configurations schematic diagram of the invention, active noise reduction system in feed forward type room, including sound receives mould
Block, sound processing module, reverse phase Dolby circuit, emitter follower, bone conduction vibrator, the sound receiving module and acoustic processing mould
Block, emitter follower, bone conduction vibrator are sequentially connected electrically, and the sound that sound receiving module acquires is become simulation electricity by sound processing module
Signal is by positive amplification, emitter follower, reversed amplification output to bone conduction vibrator.Bone conduction vibrator generates glass and sound wave phase
The opposite vibration in position, to inhibit the vibration of glass, so that acoustic noise reducing.
It is specific:
The sound receiving module and sound processing module can be used as microphone circuit: reference Fig. 2,
Microphone circuit is made of condenser type post pole body microphone pickup device and its biasing circuit, positive amplifying circuit.Positive amplification
Device uses Texas Instrument LM386 type low-voltage audio-frequency amplifier (LM386 Low Voltage Audio Power
Amplifier), adjustable gain.
LM386 type amplifier, adjustable gain are also used referring to Fig. 3, inverter cricuit.
Further, active noise reduction system further includes bluetooth module, bluetooth module and bone conduction vibrator in the feed forward type room
Electrical connection vibrates the effect that glass realizes broadcasting music by bone conduction vibrator.Specifically, bluetooth module using JDY-64 type without
Damage Bluetooth audio frequency unit.
Further, product of the present invention uses two kinds because of its application diversity in the mode for providing power supply,
It is directly to connect alternating current by power supply adaptor that the first, which becomes fixed denoising device, is suitable for household, the position of sound control glass
It sets and immobilizes.Second is the power supply of portable denoising device rechargeable battery, be can be carried around, such as travel outside, and can be incited somebody to action
The device is adsorbed on the glass of hotel.
Fixed denoising device can be sticked at directly on glass with glass cement, need that there are power supply lines.It is portable to pass through suction
Disk is adsorbed on glass, can pulled up from glass when not used.
When power supply opening, the noise reduction mode as defaulted, pressing S2 can switch to bluetooth play mode, and long-pressing S1 is opened
Bluetooth, Bluetooth of mobile phone are searched for and are attached thereto.
Claims (3)
1. active noise reduction system in feed forward type room, it is characterised in that: including sound receiving module, sound processing module, reverse phase drop
Noise cancellation circuit, emitter follower, bone conduction vibrator, the sound receiving module and sound processing module, emitter follower, bone conduction vibrator are successively
Electrical connection, sound processing module by the sound that sound receiving module acquire become analog electrical signal pass through positive amplification, emitter follower,
Reversed amplification output is to bone conduction vibrator, and bone conduction vibrator makes glass generate the vibration opposite with acoustic phase, to inhibit glass
The vibration of glass, so that acoustic noise reducing.
2. active noise reduction system in feed forward type room as described in claim 1, it is characterised in that: sound receiving module and sound
Processing module can be used as microphone circuit:
Microphone circuit is made of condenser type post pole body microphone pickup device and its biasing circuit, positive amplifying circuit, positive amplification
Device uses Texas Instrument LM386 type low-voltage audio-frequency amplifier (LM386 Low Voltage Audio Power
Amplifier), adjustable gain；Inverter cricuit also uses LM386 type amplifier, adjustable gain.
3. active noise reduction system in feed forward type room as described in claim 1, it is characterised in that: active noise reduction in the feed forward type room
System further includes bluetooth module, and bluetooth module is electrically connected with bone conduction vibrator, vibrates glass by bone conduction vibrator and realizes broadcasting
The effect of music.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190161.4A CN109949790A (en) | 2019-03-13 | 2019-03-13 | Active noise reduction system in feed forward type room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190161.4A CN109949790A (en) | 2019-03-13 | 2019-03-13 | Active noise reduction system in feed forward type room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109949790A true CN109949790A (en) | 2019-06-28 |
Family
ID=67008659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910190161.4A Pending CN109949790A (en) | 2019-03-13 | 2019-03-13 | Active noise reduction system in feed forward type room |
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| Country | Link |
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| CN (1) | CN109949790A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802442A (en) * | 2021-04-15 | 2021-05-14 | 上海鹄恩信息科技有限公司 | Control method of electrostatic field noise reduction glass, electrostatic field noise reduction glass and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191871A (en) * | 2002-12-13 | 2004-07-08 | Sumitomo Electric Ind Ltd | In-vehicle silencing system, noise eliminating device and in-vehicle silencing method |
| JP2006325895A (en) * | 2005-05-26 | 2006-12-07 | National Institute Of Advanced Industrial & Technology | Noise reducing device |
| CN104536477A (en) * | 2014-12-29 | 2015-04-22 | 中国电子科技集团公司第二十九研究所 | Glass noise active control silencing system and operating method |
| CN105611061A (en) * | 2015-12-31 | 2016-05-25 | 宇龙计算机通信科技(深圳)有限公司 | Voice transmission method and device and mobile terminal |
| CN106535050A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Active noise reduction module eliminating automobile noise |
| CN107302731A (en) * | 2017-08-15 | 2017-10-27 | 常德沁音科技有限公司 | A kind of earphone and its noise-reduction method based on osteoacusis |
| CN108086518A (en) * | 2017-12-23 | 2018-05-29 | 广州市尊浪电器有限公司 | Active room noise shielding system |
-
2019
- 2019-03-13 CN CN201910190161.4A patent/CN109949790A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191871A (en) * | 2002-12-13 | 2004-07-08 | Sumitomo Electric Ind Ltd | In-vehicle silencing system, noise eliminating device and in-vehicle silencing method |
| JP2006325895A (en) * | 2005-05-26 | 2006-12-07 | National Institute Of Advanced Industrial & Technology | Noise reducing device |
| CN104536477A (en) * | 2014-12-29 | 2015-04-22 | 中国电子科技集团公司第二十九研究所 | Glass noise active control silencing system and operating method |
| CN105611061A (en) * | 2015-12-31 | 2016-05-25 | 宇龙计算机通信科技(深圳)有限公司 | Voice transmission method and device and mobile terminal |
| CN106535050A (en) * | 2016-08-20 | 2017-03-22 | 中声科技（北京）有限公司 | Active noise reduction module eliminating automobile noise |
| CN107302731A (en) * | 2017-08-15 | 2017-10-27 | 常德沁音科技有限公司 | A kind of earphone and its noise-reduction method based on osteoacusis |
| CN108086518A (en) * | 2017-12-23 | 2018-05-29 | 广州市尊浪电器有限公司 | Active room noise shielding system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112802442A (en) * | 2021-04-15 | 2021-05-14 | 上海鹄恩信息科技有限公司 | Control method of electrostatic field noise reduction glass, electrostatic field noise reduction glass and storage medium |
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