CN106303885A - A kind of noise control method and system and a kind of sound proof box - Google Patents
A kind of noise control method and system and a kind of sound proof box Download PDFInfo
- Publication number
- CN106303885A CN106303885A CN201610865066.6A CN201610865066A CN106303885A CN 106303885 A CN106303885 A CN 106303885A CN 201610865066 A CN201610865066 A CN 201610865066A CN 106303885 A CN106303885 A CN 106303885A
- Authority
- CN
- China
- Prior art keywords
- noise
- sealing space
- vibrating sensor
- panel speaker
- vibration
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
Abstract
The invention discloses a kind of noise control method and system and a kind of sound proof box, this noise control system, for building low noise environment in sealing space, seals the microphone of space outer wall, panel speaker, vibratory driver and some vibrating sensors being arranged on sealing space wall including a processing unit, some being arranged on；Microphone is used for gathering acoustic noise X1 (n), vibrating sensor is used for gathering vibration noise X2 (n), processing unit is used for, to panel speaker transmission, the signal offsetting driving signal H1 (n) of acoustic noise X1 (n) according to acoustic noise X1 (n), and according to vibration noise X2 (n), send to vibratory driver and be used for driving signal H2 (n) offsetting vibration noise X2 (n).By the dynamic control to noise, reduce the residual noise sealed in space, can be widely applied to the building of low noise test environment of acoustics components and parts, sound proof box can be made when being applied to sound proof box to obtain more preferable low frequency sound insulation value.
Description
Technical field
The present invention relates to noise control technique field, be specifically related to a kind of noise control method and system and a kind of sound insulation
Case.
Background technology
Along with the raising to acoustics components and parts performance requirement, require to improve the most accordingly to the technology of its performance test accessory.
Sound proof box has been used to acoustics components and parts Noise Floor (background noise), THD (Total Harmonic
Distortion, total harmonic distortion) etc. the primary acoustic accessory of performance parameter test, the background noise in sound proof box can affect sound
Learn components and parts performance test.
Existing sound proof box generally uses high density material as agent structure material, fills between multi-layer body structure
Substantial amounts of sound-absorbing material or installation dynamic vibration absorber, but these measures not only cannot reduce low-frequency noise, on the contrary because increasing
Quality causes the low frequency soundproof effect of sound proof box to become worse.Existing sound proof box cannot meet the sound wider to frequency domain requirement
Learn the demand of component testing.
Summary of the invention
The invention provides a kind of noise control method and system and a kind of sound proof box, to solve existing sound proof box pair
The problem that the soundproof effect of low-frequency noise is bad.
According to an aspect of the invention, it is provided a kind of noise control system, for building low noise in sealing space
Acoustic environment, described noise control system include a processing unit and some microphones, vibrating sensor, panel speaker,
Vibratory driver；Described microphone, panel speaker and vibratory driver are arranged on the outer wall in described sealing space, described vibration
Sensor is arranged on the inwall in described sealing space；
Described microphone is used for gathering acoustic noise X1 (n)；
Described vibrating sensor is used for gathering vibration noise X2 (n)；
Described processing unit, for acoustic noise X1 (n) according to described microphone pick, sends out to described panel speaker
Send driving signal H1 (n) for offsetting acoustic noise X1 (n)；And the vibration for gathering according to described vibrating sensor makes an uproar
Sound X2 (n), sends to described vibratory driver and is used for driving signal H2 (n) offsetting vibration noise X2 (n).
According to a further aspect in the invention, the invention provides a kind of sound proof box, including casing and making an uproar that the present invention provides
Acoustic control system；
Described casing surrounds a sealing space, for placing the acoustics components and parts carrying out acoustical behavior test；
Described noise control system, for building the low noise environment in this sealing space, detects the acoustics in described sealing space
Noise and vibration noise, send the signal for offsetting described acoustic noise and vibration noise.
According to another aspect of the invention, the invention provides a kind of noise control method, for taking in sealing space
Building low noise environment, described method includes:
Outer wall in described sealing space arranges some microphones, panel speaker and vibratory driver, in described sealing
Space wall arranges some vibrating sensors；
Utilize described microphone pick acoustic noise X1 (n), utilize described vibrating sensor to gather vibration noise X2 (n)；
According to acoustic noise X1 (n) of described microphone pick, send to described panel speaker and drive signal H1 (n),
Described panel speaker is driven to send the signal for offsetting acoustic noise X1 (n)；
Vibration noise X2 (n) gathered according to described vibrating sensor, sends to described vibratory driver and drives signal H2
N (), drives described vibratory driver to send the signal for offsetting vibration noise X2 (n).
The invention has the beneficial effects as follows: the various embodiments described above of the present invention use the method for Active noise control using, by transaudient
Device and vibrating sensor are monitored in real time and are sealed the acoustic noise in space or within sound proof box and vibration noise, according to microphone
After the noise signal of vibrating sensor collection, panel speaker and vibratory driver to relevant position send and drive accordingly
Dynamic signal, to offset the noise sealed in space or in sound proof box.The embodiment of the present invention provide sound proof box with existing every
Audio amplifier is compared possesses more preferable low frequency sound insulation value.Noise control method and system that the present embodiment provides can be used for as acoustics unit
Low noise environment is built in the performance test of device.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of a kind of noise control system that one embodiment of the invention provides；
Fig. 2 is the structural representation of a kind of noise control system that one embodiment of the invention provides；
Fig. 3 is the workflow diagram of a kind of noise control system that one embodiment of the invention provides；
Fig. 4 is the structural representation of a kind of sound proof box that one embodiment of the invention provides；
Fig. 5 is the flow chart of a kind of noise control method that one embodiment of the invention provides.
Detailed description of the invention
The design concept of the present invention is: the method using Active noise control using, by the dynamic control of active noise, reduces
The environment noise of low frequency in sound proof box, improves the acoustic noise environment within sound proof box.
Embodiment one
Fig. 1 is the functional block diagram of a kind of noise control system that one embodiment of the invention provides, and Fig. 2 is the present invention one
The structural representation of a kind of noise control system that embodiment provides, in conjunction with Fig. 1 and Fig. 2, in order to take in sealing space
Build low noise environment, it is achieved to the dynamic control of noise in this sealing space, present embodiments provide a kind of based on LMS (Least
Mean Square, lowest mean square) noise control system of self-adapting multi-channel of algorithm, this system includes a processing unit
110, some panel speakers 140 and vibratory driver 150 are as secondary sound source and secondary vibration source and some microphones
120 and vibrating sensor 130 as error pick-up.Microphone 120, panel speaker 140 and vibratory driver 150 are arranged on
Sealing the outer wall in space, vibrating sensor is arranged on the inwall sealing space.
Microphone 120 is used for gathering acoustic noise, and vibrating sensor 130 is used for gathering vibration noise.Processing unit 110
The acoustic noise gathered according to microphone 120, sends to panel speaker 140 and drives signal, drives panel speaker 140 to send use
The signal of acoustic noise in space is sealed in offsetting；Further, the vibration that processing unit 110 gathers always according to vibrating sensor 130
Noise, sends to vibratory driver 150 and drives signal, drives vibratory driver 150 to send for offsetting vibration in sealing space
The signal of noise.
In the present embodiment, processing unit 110 is DSP (Digital Signal Processor, digital signal processor),
Including first input end, the second input and the first outfan；
Each microphone 120 and vibrating sensor 130 are parallel by multichannel preamplifier and analog-digital converter respectively
It is connected to the first input end of DSP.Acoustic noise signal and vibration noise that microphone 120 and vibrating sensor 130 gather are believed
It is converted into digital data transmission to DSP after number amplifying.Each panel speaker 140 and vibratory driver 150 pass through respectively
Digital to analog converter and power amplifier are connected in parallel to first outfan of DSP, and the driving signal of DSP output is converted into simulation letter
Amplify through power amplifier after number and transmit to speaker 140 and vibratory driver 150, to drive speaker 140 and vibration
Driver 150 works.
Second input of DSP, can be defeated by one for inputting the expectation noise figure in sealing space set in advance
Enter terminal to DSP input expectation noise figure.
Setting variable and parameter:
X1 (n) is microphone input variable matrix=[x11(n),x12(n),x13(n)……x1j(n)]；
X2 (n) is vibrating sensor input variable matrix=[x21(n),x22(n),x23(n)……x2j(n)]；
W1 (n) is secondary sound source weight vector matrix=[w11(n),w12(n),w13(n)……w1j(n)]；
W2 (n) is secondary vibration source weight vector matrix=[w21(n),w22(n),w23(n)……w2j(n)]；
H1 (n) is that secondary sound source drives signal matrix=[h11(n),h12(n),h13(n)……h1j(n)]；
H2 (n) is secondary vibration source-driving-signal matrix=[h21(n),h22(n),h23(n)……h2j(n)]；
E1 (n) is acoustic noise deviation；
E2 (n) is vibration noise deviation；
D (n) is expectation noise figure；
Y (n) is actual noise in sound proof box；
η is learning rate；
N is iterations.
Fig. 3 is the workflow diagram of a kind of noise control system that one embodiment of the invention provides, as it is shown on figure 3, first
First pass through an input terminal to DSP input expectation noise figure d (n).Microphone 120 and vibrating sensor 130 gather initial shape
Input quantity X1 (0) of state and X2 (0), DSP is according to LMA algorithm calculating W1 (1) and W2 (1):
E1 (n)=d (n)-X1 (n)
E2 (n)=d (n)-X2 (n)
W1 (n+1)=W1 (n)-η X1 (n) e1 (n)
W2 (n+1)=W2 (n)-η X2 (n) e2 (n)
Original state W1 (0)=0, W2 (0)=0.
After calculating completes, DSP generates driving of secondary sound source and secondary vibration source according to calculated W1 (n) and W2 (n)
Dynamic signal H1 (n) and H2 (n):
H1 (n)=X1T(n)W1(n)
H2 (n)=X2T(n)W2(n)
The DSP panel speaker 140 to relevant position sends and drives signal H1 (n), to the vibratory driver of relevant position
150 send driving signal H2 (n).Speaker 140 and vibratory driver 150 offset original acoustic noise X1 (n) and vibrations are made an uproar
After sound X2 (n), microphone 120 and vibrating sensor 130 can collect new input quantity X1 (1) and X2 (1), such that it is able to meter
Calculate new acoustic noise deviation e1 (n) and vibration noise deviation e2 (n).If acoustic noise deviation e1 (n) is more than presetting
Threshold value limit1, then according to LMS algorithm update weight vector matrix W 1 (n)；If vibration noise deviation e2 (n) is more than setting in advance
Fixed threshold value limit2, then update weight vector matrix W 2 (n) according to LMS algorithm, thus adjust driving signal H1 (n) and H2
N (), reduces the noise of residual in this sealing space further.Then said process is repeated until e1 (n) is less than limit1 and e2
N () is less than after limit2, then it is assumed that this sealing interior volume has reached the expectation state.
Preferably, in the present embodiment, DSP also includes the second outfan, and the display outside the second outfan connection of DSP is eventually
End.Microphone 120 in this noise control system and vibrating sensor 130, in addition to using as error pick-up, are also used
In the noise monitored in this sealing space, by the noise in this sealing space that microphone 120 and vibrating sensor 130 are measured
Environment can show on display terminal in real time, thus realizes the real-time monitoring to the noise circumstance in this sealing space.
The noise control system that the present embodiment provides can be used for building low noise environment for the performance test of acoustics components and parts,
It is particularly well-suited to sound proof box.
Embodiment two
Fig. 4 is the structural representation of a kind of sound proof box that one embodiment of the invention provides, as shown in Figure 4, the present embodiment
The sound proof box provided includes the noise control system that above-described embodiment one provides, and the casing of sound proof box surrounds a sealing space, uses
In placing the acoustics components and parts carrying out acoustical behavior test.It is close that the noise control system that above-described embodiment one provides is used for building this
The low noise environment in envelope space, detection seals the acoustic noise in space and vibration noise, and send for offset acoustic noise and
The signal of vibration noise.
In the present embodiment, the casing of sound proof box includes outer case 410 and internal box 420.Internal box 420 is by some dampings
Pad 430 support is nested in outer case 410, and cushion blocking 430 can effectively eliminate outer case 410 physical vibration to internal box 420
Impact.The material of cushion blocking 430 and model can determine according to the quality of internal box 420.Outer case 410 and internal box 420 are equal
Surrounding a sealing space, acoustics components and parts to be tested are placed in the sealing space that internal box 420 is formed.
Vibrating sensor 440 is arranged on the inner surface of internal box 420, for gathering the vibration and noise signals in sound proof box；
Panel speaker 470 is arranged on the inner surface of outer case 410, for gathering the acoustic noise signal in sound proof box；Microphone 450
With the outer surface that vibratory driver 460 is arranged on internal box 420, it is used for receiving and drives signal accordingly, by active noise control
The mode of system improves the vibration noise within sound proof box and acoustic noise.The acoustical signal that panel speaker 470 sends counteracts
The acoustic noise in gap between outer case 410 and internal box 420, makes the acoustic noise of outside will not continue to travel to interior case
Body.After cushion blocking 430 eliminates the part physical vibration of outer case 410, the vibratory driver 460 on internal box 420 outer surface
Send the remaining mechanical vibration of vibration cancellation, so that the vibration that the vibrating sensor 440 on internal box 420 inner surface detects
Noise is less than expected value.
In the present embodiment, the same side of outer case 410 and internal box 420 is respectively arranged with outer case door 480 and interior case
Body door 490, can be with taking and putting measured acoustics components and parts by switch outer case door 480 and internal box door 490.Except cabinet door 480
Outside internal box door 490, keep away as far as possible and on outer case 410 and internal box 420, have cavity or gap, outer case door 480 and interior
After cabinet door 490 is closed, outer case 410 and internal box 420 all surround a sealing space.Outer case 410, internal box 420, outer container
Body door 480, internal box door 490 use high desnity metal material of the same race, it is possible to use the material such as steel or copper.
The sound proof box that the present embodiment provides uses the method for Active noise control using, real-time by microphone and vibrating sensor
Monitoring acoustic noise sound proof box within and vibration noise, DSP analyze microphone and vibrating sensor collection noise signal it
After, panel speaker and vibratory driver to relevant position send and drive signal accordingly, to offset the noise in sound proof box.
DSP, by analyzing the noise of residual further, progressively adjusts the driving signal being sent to panel speaker and vibratory driver, directly
Noise to residual is less than desired noise, possesses more preferable low frequency sound insulation value compared with existing sound proof box.After tested, originally
The sound proof box that embodiment provides, than the existing sound proof box low 10dB to 20dB of internal medium noise, can be widely applied to acoustics unit device
The low noise environment test of part.
Embodiment three
Fig. 5 is the flow chart of a kind of noise control method that one embodiment of the invention provides, as it is shown in figure 5, this enforcement
The noise control method that example provides is for building low noise environment in sealing space, and the method includes:
Step S510: arrange some microphones, panel speaker and vibratory driver at the outer wall sealing space, is sealing
Space wall arranges some vibrating sensors.
Step S520: utilize microphone pick acoustic noise X1 (n), utilizes vibrating sensor to gather vibration noise X2 (n).
Perform step S530 and step S540 the most respectively.
Step S530: according to acoustic noise X1 (n) of microphone pick, sends to panel speaker and drives signal H1 (n),
Panel speaker is driven to send the signal for offsetting acoustic noise X1 (n).
Step S540: vibration noise X2 (n) gathered according to vibrating sensor, sends to vibratory driver and drives signal H2
N (), drives vibratory driver to send the signal for offsetting vibration noise X2 (n).
Preferably, step S530 " according to acoustic noise X1 (n) of microphone pick, sends to panel speaker and drives
Signal H1 (n) ", specifically include: send to panel speaker and drive signal H1 (n)=X1TN () W1 (n), as acoustic noise X1
When () is more than first threshold set in advance n, according to LMS algorithm renewal weight vector matrix W 1 (n): W1 (n+1)=W1 (n)-η
X1(n)e1(n)
In step S540, " vibration noise X2 (n) gathered according to vibrating sensor sends to vibratory driver and drives signal
H2 (n) " specifically include: send to vibratory driver and drive signal H2 (n)=X2TN () W2 (n), when vibration noise X2 (n) is more than
During Second Threshold set in advance, according to LMS algorithm renewal weight vector matrix W 2 (n): W2 (n+1)=W2 (n)-η X2 (n) e2
(n)。
Wherein, W1 (n), W2 (n) are weight vector matrix, initial value W1 (0)=0, W2 (0)=0；E1 (n)=d (n)-X1
N (), e2 (n)=d (n)-X2 (n), d (n) are the expectation noise figure in sealing space set in advance, and η is learning rate.
It is further preferred that the control Noise Method that the present embodiment provides also includes step S550: to outside display eventually
End sends acoustic noise X1 (n) and vibration noise X2 (n) of vibrating sensor collection of microphone pick, by this display terminal
Show the noise figure in this sealing space in real time, thus realize the real-time monitoring to the noise circumstance in this sealing space.
The noise control method that the present embodiment provides can be used for building low noise environment for the performance test of acoustics components and parts,
The noise control method such as utilizing the present embodiment to provide can make the sound proof box possessing more preferable low frequency sound insulation value.
The above, the only detailed description of the invention of the present invention, under the above-mentioned teaching of the present invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of above-described embodiment.It will be understood by those skilled in the art that above-mentioned tool
Body describes simply preferably explains the purpose of the present invention, and protection scope of the present invention should be as the criterion with scope of the claims.
Claims (10)
1. a noise control system, for building low noise environment, it is characterised in that described noise control in sealing space
System includes a processing unit and some microphones, vibrating sensor, panel speaker, vibratory driver；Described transaudient
Device, panel speaker and vibratory driver are arranged on the outer wall in described sealing space, and described vibrating sensor is arranged on described close
The inwall in envelope space；
Described microphone is used for gathering acoustic noise X1 (n)；
Described vibrating sensor is used for gathering vibration noise X2 (n)；
Described processing unit, for acoustic noise X1 (n) according to described microphone pick, sends to described panel speaker and uses
In driving signal H1 (n) offsetting acoustic noise X1 (n)；And for the vibration noise X2 gathered according to described vibrating sensor
N (), sends to described vibratory driver and is used for driving signal H2 (n) offsetting vibration noise X2 (n).
2. noise control system as claimed in claim 1, it is characterised in that
Described processing unit, drives signal H1 (n)=X1 specifically for sending to described panel speakerTN () W1 (n), works as acoustics
Noise X1 (n) more than first threshold set in advance time, according to LMS algorithm update weight vector matrix W 1 (n): W1 (n+1)=
W1(n)-ηX1(n)e1(n)；
Described processing unit, drives signal H2 (n)=X2 also particularly useful for sending to described vibratory driverTN () W2 (n), when shaking
When moving noise X2 (n) is more than Second Threshold set in advance, update weight vector matrix W 2 (n): W2 (n+1) according to LMS algorithm
=W2 (n)-η X2 (n) e2 (n)；
Wherein, W1 (n), W2 (n) are weight vector matrix, initial value W1 (0)=0, W2 (0)=0；E1 (n)=d (n)-X1 (n),
E2 (n)=d (n)-X2 (n), d (n) are the expectation noise figure in described sealing space set in advance, and η is learning rate.
3. noise control system as claimed in claim 2, it is characterised in that described processing unit is digital signal processor,
Including first input end, the second input and the first outfan；
Each described microphone and described vibrating sensor are connected parallel by multichannel preamplifier and analog-digital converter respectively
Receive the first input end of described digital signal processor；
Each described panel speaker and described vibratory driver are connected parallel by digital to analog converter and power amplifier respectively
Receive the first outfan of described digital signal processor；
Second input of described digital signal processor is for inputting the expectation noise figure d in described sealing space set in advance
(n)。
4. noise control system as claimed in claim 3, it is characterised in that described digital signal processor also includes that second is defeated
Go out end；
The display terminal outside second outfan connection of described digital signal processor, described for sending to this display terminal
Vibration noise X2 (n) that acoustic noise X1 (n) of microphone pick and described vibrating sensor gather, real by this display terminal
Time show the noise figure in described sealing space.
5. a sound proof box, it is characterised in that include casing and the noise control system described in any one of claim 1-4；
Described casing surrounds a sealing space, for placing the acoustics components and parts carrying out acoustical behavior test；
Described noise control system, for building the low noise environment in this sealing space, detects the acoustic noise in described sealing space
And vibration noise, send the signal for offsetting described acoustic noise and vibration noise.
6. sound proof box as claimed in claim 5, it is characterised in that described casing includes outer case and internal box, described interior case
Body is supported by some cushions and is nested in described outer case；
Described outer case and internal box all surround a sealing space, and acoustics components and parts to be tested are placed on described internal box and are formed
Sealing space in；
The vibrating sensor of described noise control system is arranged on the inner surface of described internal box；The biography of described noise control system
Sound device and vibratory driver are arranged on the outer surface of described internal box；The panel speaker of described noise control system is arranged on institute
State the inner surface of outer case.
7. sound proof box as claimed in claim 6, it is characterised in that the same side of described outer case and internal box is respectively provided with
After having outer case door and internal box door, described outer case door and internal box door to close, described outer case and internal box all surround one
Seal space；
Described outer case, internal box, outer case door, internal box door use high desnity metal material of the same race.
8. a noise control method, for building low noise environment, it is characterised in that described method bag in sealing space
Include:
Outer wall in described sealing space arranges some microphones, panel speaker and vibratory driver, in described sealing space
Inwall arranges some vibrating sensors；
Utilize described microphone pick acoustic noise X1 (n), utilize described vibrating sensor to gather vibration noise X2 (n)；
According to acoustic noise X1 (n) of described microphone pick, send to described panel speaker and drive signal H1 (n), drive
Described panel speaker sends the signal for offsetting acoustic noise X1 (n)；
Vibration noise X2 (n) gathered according to described vibrating sensor, sends to described vibratory driver and drives signal H2 (n),
Described vibratory driver is driven to send the signal for offsetting vibration noise X2 (n).
9. noise control method as claimed in claim 8, it is characterised in that
Described acoustic noise X1 (n) according to described microphone pick, sends to described panel speaker and drives signal H1 (n),
Specifically include:
Send to described panel speaker and drive signal H1 (n)=X1TN () W1 (n), when acoustic noise X1 (n) is more than presetting
First threshold time, according to LMS algorithm update weight vector matrix W 1 (n): W1 (n+1)=W1 (n)-η X1 (n) e1 (n)
Described vibration noise X2 (n) gathered according to described vibrating sensor, sends to described vibratory driver and drives signal H2
N () specifically includes:
Send to described vibratory driver and drive signal H2 (n)=X2TN () W2 (n), when vibration noise X2 (n) is more than presetting
Second Threshold time, according to LMS algorithm update weight vector matrix W 2 (n): W2 (n+1)=W2 (n)-η X2 (n) e2 (n)；
Wherein, W1 (n), W2 (n) are weight vector matrix, initial value W1 (0)=0, W2 (0)=0；E1 (n)=d (n)-X1 (n),
E2 (n)=d (n)-X2 (n), d (n) are the expectation noise figure in described sealing space set in advance, and η is learning rate.
10. noise control method as claimed in claim 9, it is characterised in that described method also includes:
Acoustic noise X1 (n) of described microphone pick and shaking of described vibrating sensor collection is sent to outside display terminal
Moving noise X2 (n), shows the noise figure in described sealing space in real time by this display terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865066.6A CN106303885B (en) | 2016-09-29 | 2016-09-29 | Noise control method and system and sound insulation box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610865066.6A CN106303885B (en) | 2016-09-29 | 2016-09-29 | Noise control method and system and sound insulation box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106303885A true CN106303885A (en) | 2017-01-04 |
| CN106303885B CN106303885B (en) | 2020-02-28 |
Family
ID=57715717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610865066.6A Active CN106303885B (en) | 2016-09-29 | 2016-09-29 | Noise control method and system and sound insulation box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106303885B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105774A (en) * | 2003-10-02 | 2005-04-21 | Takenaka Komuten Co Ltd | Sound isolating structure, sound isolator, and sound isolation method |
| US20060269078A1 (en) * | 2005-05-30 | 2006-11-30 | Honda Motor Co., Ltd. | Vehicular active noise/vibration/sound control system, and vehicle incorporating such system |
| CN102750945A (en) * | 2012-07-12 | 2012-10-24 | 苏州岸肯电子科技有限公司 | Silence chamber |
| CN104349263A (en) * | 2014-09-07 | 2015-02-11 | 歌尔声学股份有限公司 | Sound-insulating box, testing device applying same and testing method thereof |
| JP2015114270A (en) * | 2013-12-13 | 2015-06-22 | 三菱重工業株式会社 | Noise evaluation device and noise evaluation method |
| CN104935293A (en) * | 2015-06-25 | 2015-09-23 | 国网山东省电力公司莱芜供电公司 | Large power transformer self-adaptive active noise reduction control method and control system |
| CN105136271A (en) * | 2015-05-19 | 2015-12-09 | 奇瑞汽车股份有限公司 | Noise measurement method and device, and vibration measurement method and device |
| CN105872930A (en) * | 2016-03-31 | 2016-08-17 | 歌尔声学股份有限公司 | Microphone testing equipment and microphone testing method capable of reducing interference vibration |
-
2016
- 2016-09-29 CN CN201610865066.6A patent/CN106303885B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105774A (en) * | 2003-10-02 | 2005-04-21 | Takenaka Komuten Co Ltd | Sound isolating structure, sound isolator, and sound isolation method |
| US20060269078A1 (en) * | 2005-05-30 | 2006-11-30 | Honda Motor Co., Ltd. | Vehicular active noise/vibration/sound control system, and vehicle incorporating such system |
| CN102750945A (en) * | 2012-07-12 | 2012-10-24 | 苏州岸肯电子科技有限公司 | Silence chamber |
| JP2015114270A (en) * | 2013-12-13 | 2015-06-22 | 三菱重工業株式会社 | Noise evaluation device and noise evaluation method |
| CN104349263A (en) * | 2014-09-07 | 2015-02-11 | 歌尔声学股份有限公司 | Sound-insulating box, testing device applying same and testing method thereof |
| CN105136271A (en) * | 2015-05-19 | 2015-12-09 | 奇瑞汽车股份有限公司 | Noise measurement method and device, and vibration measurement method and device |
| CN104935293A (en) * | 2015-06-25 | 2015-09-23 | 国网山东省电力公司莱芜供电公司 | Large power transformer self-adaptive active noise reduction control method and control system |
| CN105872930A (en) * | 2016-03-31 | 2016-08-17 | 歌尔声学股份有限公司 | Microphone testing equipment and microphone testing method capable of reducing interference vibration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106303885B (en) | 2020-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070140058A1 (en) | Method and system for correcting transducer non-linearities | |
| CN107195294B (en) | Active noise reduction method and device for vehicle | |
| CN103959813A (en) | Earhole attachment-type sound pickup device, signal processing device, and sound pickup method | |
| GB2445984A (en) | Feedforward ambient noise reduction | |
| CN107147981A (en) | Monaural intrusion intelligibility of speech predicting unit, audiphone and binaural hearing aid system | |
| CN107393524A (en) | Adaptive Active Noise Control display systems | |
| CN107102658B (en) | Method and device for identifying off-line secondary channel | |
| CN104349263A (en) | Sound-insulating box, testing device applying same and testing method thereof | |
| CN106303885A (en) | A kind of noise control method and system and a kind of sound proof box | |
| WO2023021735A1 (en) | Sensor module, active control device, active control method, and program | |
| CN107666637A (en) | Self-adjustable active noise cancellation method, system and Headphone device | |
| CN112509547B (en) | Self-adaptive shock absorption processing method, terminal and storage medium | |
| JP2001147693A (en) | Method of correcting reproduced output in sound reproducing device | |
| Özer et al. | A Study on Multimodal Behaviour of Plate Absorbers | |
| Zenker et al. | Low-frequency performance of a woofer-driven flat-panel loudspeaker (Part 2: Numerical system optimization and large signal analysis) | |
| Belicchi et al. | ANC: A low-cost implementation perspective | |
| Kim | Turning a loudspeaker into an active Helmholtz resonator: Underlying law, principle and design methodology | |
| Lane | Active Control of Noise through windows | |
| CN2912178Y (en) | Loudspeaker box | |
| Oh | An experimental study on the simple active noise control windows | |
| CN204408601U (en) | A kind of sound wave amplifying device | |
| CN114348824A (en) | Elevator car noise reduction method and system and elevator | |
| CN220393004U (en) | Elevator data acquisition equipment | |
| CN116824962A (en) | Active noise control demonstration device and control method for teaching | |
| Colledge | A motional feedback system for flat panel loudspeakers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200729 Address after: 261031 building 10, Geer phase II Industrial Park, No. 102, Ronghua Road, Ronghua community, Xincheng street, high tech Zone, Weifang City, Shandong Province Patentee after: Weifang goer Microelectronics Co.,Ltd. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: GOERTEK Inc. |