CN109448690A - Noise impedance test macro and test method in a kind of airflow line - Google Patents
Noise impedance test macro and test method in a kind of airflow line Download PDFInfo
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- CN109448690A CN109448690A CN201811141258.8A CN201811141258A CN109448690A CN 109448690 A CN109448690 A CN 109448690A CN 201811141258 A CN201811141258 A CN 201811141258A CN 109448690 A CN109448690 A CN 109448690A
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- 238000012360 testing method Methods 0.000 title claims abstract description 67
- 238000010998 test method Methods 0.000 title claims abstract description 11
- 230000008030 elimination Effects 0.000 claims abstract description 30
- 238000003379 elimination reaction Methods 0.000 claims abstract description 30
- 230000003584 silencer Effects 0.000 claims abstract description 15
- 230000009467 reduction Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
Abstract
The invention discloses noise impedance test macro and test methods in a kind of airflow line, including connected pipeline test macro and control system, the pipeline test macro includes the blower being sequentially communicated, silencer box, noise source generation system, testing tube and noise elimination terminal, the control system includes frequency converter, sound quality database, multi-functional active noise controlling device, noise controlled speaker, sound quality adjusts loudspeaker and microphone, the frequency converter, sound quality database, noise controlled speaker, sound quality adjusts loudspeaker, microphone is connected with multi-functional active noise controlling device respectively；Test method of the invention, according to the principle of opposite in phase active de-noising, realize active noise controlling, sound quality in pipeline is adjusted, and timely and effectively the error of active noise controlling algorithm is modified, so that the noise that test macro is finally discharged has obtained effective processing, the influence to ambient enviroment is reduced.
Description
Technical field
The invention belongs to noise control in duct technical fields, actively more specifically to noise in a kind of airflow line
Control test macro and test method.
Background technique
Automobile engine air inlet system and exhaust system, air conditioning for automobiles and domestic air conditioning air outlet etc. can often use pipe-line system, these
Noise will have a direct impact on health of people, or even can cause disease.Huge expansion cavity, perforation are usually used in the past to pipe-line system
The structures such as plate, perforated pipe, resonant cavity, insertion tube or thick sound-absorbing material carry out passive reduction noise processed, and advocate at present
Lightweight contradict.
In existing pipeline active control technology, there is that published application No. is one kind of CN201810239630.2 patent
Duct noise active control device and method, using active noise controlling method, according to two sound wave destructive interferences or acoustically radiating
The principle of inhibition is penetrated, analysis conduit noise signal, calculate control signal in real time makes it at pipe control point to execution unit
It generates secondary sound to be superimposed with duct noise, to achieve the purpose that reduce exhaust noise.But the device or method have ignored air-flow and deposit
Working condition, often there is air-flow in pipe-line system noise problem, and do not consider pipe-line system sound quality problem.
Summary of the invention
In view of this, the purpose of the present invention is to provide in a kind of airflow line to solve above-mentioned the deficiencies in the prior art
Noise impedance test macro and test method, it is contemplated that flow conditions and sound quality, easy to operate intelligence, structure are simply tight
It gathers.
To achieve the above object, the technical scheme adopted by the invention is that:
Noise impedance test macro in a kind of airflow line, it is described including connected pipeline test macro and control system
Pipeline test macro includes the blower being sequentially communicated, silencer box, noise source generation system, testing tube and noise elimination terminal, the control
System processed includes frequency converter, sound quality database, multi-functional active noise controlling device, noise controlled speaker, sound quality adjusting
Loudspeaker and microphone, the frequency converter, sound quality database, noise controlled speaker, sound quality adjust loudspeaker, microphone
It is connected respectively with multi-functional active noise controlling device；
The frequency converter is set on the blower, and the blower is connected to the silencer box by the first terminal pad, and silencer box passes through
Second terminal pad is connected with noise source generation system, and the noise source generation system is connected by third terminal pad with testing tube
It is logical, noise controlled speaker, sound quality adjusting loudspeaker are respectively set in the testing tube, testing tube passes through the 4th terminal pad and connects
Lead to the noise elimination terminal, in a setting microphone close to noise elimination terminal, the blower, noise source in testing tube
Generation system is connect with multi-functional active noise controlling device respectively.
Further, first terminal pad, the second terminal pad, third terminal pad, the 4th terminal pad are all made of flexible connect
It connects.
Further, the blower is roots blower or common blower.
Further, the silencer box is the noise elimination structure of resistance noise reduction or reactive muffling or impedance composite.
Further, the noise elimination terminal is the noise elimination structure of resistance noise reduction or reactive muffling or impedance composite.
Further, the noise source generation system includes multiple equally distributed loudspeakers, multiple loudspeakers
It is connect with the multi-functional active noise controlling device.
Further, the pipeline section of the testing tube is round or quadrangle or other shapes.
Further, the frequency converter is the chip with variable frequency adjustment function.
The test method of noise impedance test macro in a kind of airflow line, comprising the following steps:
S1: the multi-functional active noise controlling device controls the opening and closing of the blower, the multi-functional active noise controlling device control
Frequency converter processed, and then adjust the air-flow that blower generates different air velocities；
S2: the silencer box carries out noise elimination processing to the air-flow in step S1；
S3: the multi-functional active noise controlling device controls the noise source generation system and generates known controllable noise source；
S4: according to the principle of opposite in phase active de-noising, the multi-functional active noise controlling device is by adjusting the noise control
Loudspeaker processed, and then noise impedance in pipeline is carried out to testing tube according to active noise controlling algorithm；
S5: the sound quality adjusts loudspeaker and calls the sound quality database by the multi-functional active noise controlling device,
And then sound quality in the pipeline test macro pipeline is adjusted；
S6: the multi-functional active noise controlling device controls the microphone, so to the error of active noise controlling algorithm into
Row amendment；
S7: the noise that the noise elimination terminal discharges the pipeline test macro carries out noise elimination processing.
The beneficial effects of the present invention are:
On the one hand noise impedance test macro in a kind of airflow line of the invention may be implemented to pipeline interior air-flow condition
Control, on the other hand, for having the case where air-flow in pipeline, can need to carry out automatic adjustment and the master of noise according to user
Dynamic control, in addition, being adjusted to sound quality in pipeline while to noise impedance and test, obtaining excellent sound
Quality, whole control effect is good, accurate, quick, more intelligent, automation；
The test method of noise impedance test macro in a kind of airflow line of the invention, according to opposite in phase active de-noising
Principle, realize active noise controlling, and timely and effectively the error of active noise controlling algorithm be modified, so that test
The noise that system is finally discharged has obtained effective processing, reduces the influence to ambient enviroment.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention；
Marked in the figure: 1, blower, the 2, first terminal pad, 3, silencer box, the 4, second terminal pad, 5, noise source generation system, 6,
Three terminal pads, 7, testing tube, the 8, the 4th terminal pad, 9, noise elimination terminal, 10, frequency converter, 11, sound quality database, 12, multi-functional
Active noise controlling device, 13, noise controlled speaker, 14, sound quality adjusting loudspeaker, 15, microphone.
Specific embodiment
Specific embodiment is given below, to technical solution of the present invention make further it is clear, complete, explain in detail.This
Embodiment is most preferred embodiment based on the technical solution of the present invention, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Figure 1, noise impedance test macro in a kind of airflow line, including connected pipeline test macro and
Control system, the pipeline test macro include the blower 1 being sequentially communicated, silencer box 3, noise source generation system 5, testing tube 7
With noise elimination terminal 9, the control system includes frequency converter 10, sound quality database 11, multi-functional active noise controlling device 12, makes an uproar
Acoustic control loudspeaker 13, sound quality adjust loudspeaker 14 and microphone 15, the frequency converter 10, sound quality database 11, noise
Control loudspeaker 13, sound quality adjust loudspeaker 14, microphone 15 is connected with multi-functional active noise controlling device 12 respectively；
The frequency converter 10 is set on the blower 1, and the blower 1 is connected to the silencer box 3 by the first terminal pad 2, eliminates the noise
Case 3 is connected by the second terminal pad 4 with noise source generation system 5, and the noise source generation system 5 passes through third terminal pad 6
It is connected with testing tube 7, noise controlled speaker 13 is respectively set in the testing tube 7, sound quality adjusts loudspeaker 14, test
Pipe 7 is connected to the noise elimination terminal 9 by the 4th terminal pad 8, in a setting institute close to noise elimination terminal 9 in testing tube 7
Microphone 15 is stated, the blower 1, noise source generation system 5 are connect with multi-functional active noise controlling device 12 respectively.
Further, first terminal pad 2, the second terminal pad 4, third terminal pad 6, the 4th terminal pad 8 are all made of soft
Property connection, it is possible to reduce from the vibration of blower 1 and noise source generation system 5.
Further, the blower 1 is roots blower or common blower.
Further, the silencer box 3 is the noise elimination structure of resistance noise reduction or reactive muffling or impedance composite, silencer box
3 can reduce fan noise, to generate noiseless air-flow.
Further, the noise elimination terminal 9 is the noise elimination structure of resistance noise reduction or reactive muffling or impedance composite.It eliminates the noise
The noise that terminal 9 discharges the pipeline test macro carries out noise elimination processing, reduces the influence to ambient enviroment.
Further, the noise source generation system 5 includes multiple equally distributed loudspeakers, multiple loudspeakers
It is connect with the multi-functional active noise controlling device 12.Further, in the present embodiment, in the noise source generation system 5
Loudspeaker can for a pair of of loudspeaker or so or upper and lower arrangement, be also possible to four or more equally distributed loudspeakings
Device.
Further, the pipeline section of the testing tube 7 is round or quadrangle or other shapes.
Further, the frequency converter 10 is the chip with variable frequency adjustment function.Further, the frequency converter 10
It can be the frequency converter of finished product.
Further, the sound quality database 11 can be ready-made audio database, is also possible to have and expands function
The sound quality database of energy.
Further, multi-functional active noise controlling device 12 is by coordinating noise source generation system 5, noise controlled speaker
13, sound quality adjusts loudspeaker 14, sound quality database 11, microphone 15, and the active control of Lai Shixian noise obtains excellent
Sound quality；Multi-functional active noise controlling device 12 is by adjusting frequency converter 10, blower 1, to realize the control to flow conditions.
Noise impedance test macro in a kind of airflow line of the invention, on the one hand may be implemented to pipeline interior air-flow
On the other hand the control of condition for having the case where air-flow in pipeline, can need to carry out according to user the automatic adjustment of noise
And active control obtains excellent in addition, sound quality in pipeline is adjusted while to noise impedance and test
Sound quality, whole control effect is good, accurate, quickly, more intelligent, automation.
The test method of noise impedance test macro in a kind of airflow line of the invention, comprising the following steps:
S1: the multi-functional active noise controlling device 12 controls the opening and closing of the blower 1, the multi-functional active noise controlling device
12 control frequency converters 10, and then adjust the air-flow that blower 1 generates different air velocities；
S2: the silencer box 3 carries out noise elimination processing to the air-flow in step S1,1 noise of blower can be reduced, to generate nothing
The air-flow of sound；
S3: the multi-functional active noise controlling device 12 controls the noise source generation system 5 and generates known controllable noise source；
S4: according to the principle of opposite in phase active de-noising, the multi-functional active noise controlling device 12 is by adjusting the noise
Loudspeaker 13 is controlled, and then noise impedance in pipeline is carried out to testing tube 7 according to active noise controlling algorithm；
S5: the sound quality adjusts loudspeaker 14 and calls the sound quality data by the multi-functional active noise controlling device 12
Library 11, and then sound quality in the pipeline test macro pipeline is adjusted；
S6: the multi-functional active noise controlling device 12 controls the microphone 15, and then to the mistake of active noise controlling algorithm
Difference is modified；
S7: the noise that the noise elimination terminal 9 discharges the pipeline test macro carries out noise elimination processing, reduces to ambient enviroment
It influences.
In conclusion noise impedance test macro in a kind of airflow line of the invention, on the one hand may be implemented pair
On the other hand the control of pipeline interior air-flow condition for having the case where air-flow in pipeline, can need to carry out noise according to user
Automatic adjustment and active control, in addition, to noise impedance and test while, sound quality in pipeline is adjusted
Section, obtains excellent sound quality, and whole control effect is good, accurate, quick, more intelligent, automation；
The test method of noise impedance test macro in a kind of airflow line of the invention, according to opposite in phase active de-noising
Principle, realize active noise controlling, and timely and effectively the error of active noise controlling algorithm be modified, so that test
The noise that system is finally discharged has obtained effective processing, reduces the influence to ambient enviroment.
Main feature of the invention, basic principle and advantages of the present invention has been shown and described above.Industry technology
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention can also have various change according to the actual situation
And improvement, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended
Claims and its equivalent thereof.
Claims (9)
1. noise impedance test macro in a kind of airflow line, it is characterised in that: including connected pipeline test macro and
Control system, the pipeline test macro include the blower (1) being sequentially communicated, silencer box (3), noise source generation system (5), survey
Test tube (7) and noise elimination terminal (9), the control system include that frequency converter (10), sound quality database (11), multi-functional active are made an uproar
Audio controller (12), noise controlled speaker (13), sound quality adjust loudspeaker (14) and microphone (15), the frequency converter
(10), sound quality database (11), noise controlled speaker (13), sound quality adjust loudspeaker (14), microphone (15) respectively
It is connected with multi-functional active noise controlling device (12)；
It is arranged the frequency converter (10) on the blower (1), the blower (1) is connected to the noise elimination by the first terminal pad (2)
Case (3), silencer box (3) are connected by the second terminal pad (4) with noise source generation system (5), the noise source generation system
(5) it is connected by third terminal pad (6) with testing tube (7), noise controlled speaker is respectively set in the testing tube (7)
(13), sound quality adjusts loudspeaker (14), and testing tube (7) is connected to the noise elimination terminal (9) by the 4th terminal pad (8), is located at
In a setting microphone (15) close to noise elimination terminal (9) in testing tube (7), the blower (1), noise source generate system
System (5) is connect with multi-functional active noise controlling device (12) respectively.
2. noise impedance test macro in a kind of airflow line according to claim 1, it is characterised in that: described
One terminal pad (2), the second terminal pad (4), third terminal pad (6), the 4th terminal pad (8) are all made of flexible connection.
3. noise impedance test macro in a kind of airflow line according to claim 1, it is characterised in that: the wind
Machine (1) is roots blower or common blower.
4. noise impedance test macro in a kind of airflow line according to claim 1, it is characterised in that: described to disappear
Sound case (3) is the noise elimination structure of resistance noise reduction or reactive muffling or impedance composite.
5. noise impedance test macro in a kind of airflow line according to claim 1, it is characterised in that: described to disappear
Acoustical terminal (9) is the noise elimination structure of resistance noise reduction or reactive muffling or impedance composite.
6. noise impedance test macro in a kind of airflow line according to claim 1, it is characterised in that: described to make an uproar
Sound source generation system (5) includes multiple equally distributed loudspeakers, and multiple loudspeakers are made an uproar with the multi-functional active
Audio controller (12) connection.
7. noise impedance test macro in a kind of airflow line according to claim 1, it is characterised in that: the survey
The pipeline section of test tube (7) is round or quadrangle or other shapes.
8. noise impedance test macro in a kind of airflow line according to claim 1, it is characterised in that: the change
Frequency device (10) is the chip with variable frequency adjustment function.
9. the test method of noise impedance test macro, feature in a kind of airflow line according to claim 1
It is: the following steps are included:
S1: the multi-functional active noise controlling device (12) controls the opening and closing of the blower (1), the multi-functional active noise control
Device (12) processed controls frequency converter (10), and then adjusts the air-flow that blower (1) generates different air velocities；
S2: the silencer box (3) carries out noise elimination processing to the air-flow in step S1；
S3: the multi-functional active noise controlling device (12) controls the noise source generation system (5) and generates known controllable make an uproar
Sound source；
S4: according to the principle of opposite in phase active de-noising, the multi-functional active noise controlling device (12) described in adjusting by making an uproar
Acoustic control loudspeaker (13), and then noise impedance in pipeline is carried out to testing tube (7) according to active noise controlling algorithm；
S5: the sound quality adjusts loudspeaker (14) and calls the sound quality by the multi-functional active noise controlling device (12)
Database (11), and then sound quality in the pipeline test macro pipeline is adjusted；
S6: the multi-functional active noise controlling device (12) controls the microphone (15), and then to active noise controlling algorithm
Error be modified；
S7: the noise that the noise elimination terminal (9) discharges the pipeline test macro carries out noise elimination processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811141258.8A CN109448690A (en) | 2018-09-28 | 2018-09-28 | Noise impedance test macro and test method in a kind of airflow line |
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| CN201811141258.8A CN109448690A (en) | 2018-09-28 | 2018-09-28 | Noise impedance test macro and test method in a kind of airflow line |
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| CN109448690A true CN109448690A (en) | 2019-03-08 |
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ID=65544624
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| CN201811141258.8A Pending CN109448690A (en) | 2018-09-28 | 2018-09-28 | Noise impedance test macro and test method in a kind of airflow line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916609A (en) * | 2019-03-20 | 2019-06-21 | 武汉理工大学 | A kind of modification method and device of built-up sound source noise signal |
| CN111536587A (en) * | 2020-04-24 | 2020-08-14 | 青岛海信日立空调系统有限公司 | Air conditioner |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05232968A (en) * | 1992-02-19 | 1993-09-10 | Fujitsu Ltd | Active noise eliminating system and filter coefficient updating method therefor |
| JPH05232975A (en) * | 1992-02-25 | 1993-09-10 | Hitachi Plant Eng & Constr Co Ltd | Electronic noise eliminating system |
| JPH0772873A (en) * | 1993-09-06 | 1995-03-17 | Sharp Corp | Active muffler |
| JPH07168585A (en) * | 1993-12-10 | 1995-07-04 | Fujitsu Ltd | Active noise control device |
| JPH094530A (en) * | 1995-06-19 | 1997-01-07 | Unisia Jecs Corp | Active noise controller for automobile |
| US5850458A (en) * | 1994-04-28 | 1998-12-15 | Unisia Jecs Corporation | Apparatus and method for actively reducing noise in vehicular passengers compartment |
| US20020150260A1 (en) * | 2001-04-12 | 2002-10-17 | Mcwilliam Richard Donald | Low frequency active noise control |
| US20030219132A1 (en) * | 2002-04-04 | 2003-11-27 | Brigham Young University | Multi-channel active control system and method for the reduction of tonal noise from an axial fan |
| US8248297B1 (en) * | 2011-04-11 | 2012-08-21 | Advanced Testing Technologies, Inc. | Phase noise measurement system and method |
| CN202420891U (en) * | 2012-01-15 | 2012-09-05 | 洛阳理工学院 | Performance test device of silencer |
| CN102818711A (en) * | 2012-01-15 | 2012-12-12 | 洛阳理工学院 | Silencer performance testing device |
| CN104317268A (en) * | 2014-10-30 | 2015-01-28 | 林波荣 | Architectural indoor environment monitoring, feedback and control system and method based on group satisfaction degree customization and energy conservation |
| CN106017665A (en) * | 2016-06-27 | 2016-10-12 | 洛阳理工学院 | Passenger seat sound quality auditory perception test device |
| CN205748629U (en) * | 2016-06-27 | 2016-11-30 | 洛阳理工学院 | Passenger-seat sound quality Auditory Perception test device |
| CN106671912A (en) * | 2015-11-06 | 2017-05-17 | 现代自动车株式会社 | Vehicle combustion noise-masking control apparatus and method of using the same |
| WO2017172916A1 (en) * | 2016-03-31 | 2017-10-05 | 3M Innovative Properties Company | Noise simulating booth for safely testing and demonstrating hearing protection equipment |
| CN108278438A (en) * | 2018-03-22 | 2018-07-13 | 浙江工业大学 | A kind of duct noise active control device and method |
| CN108357445A (en) * | 2018-03-20 | 2018-08-03 | 吉林大学 | Car masking sound quality self-adapting control system and method |
| CN209045162U (en) * | 2018-09-28 | 2019-06-28 | 天津职业技术师范大学 | Noise impedance test macro in a kind of airflow line |
-
2018
- 2018-09-28 CN CN201811141258.8A patent/CN109448690A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05232968A (en) * | 1992-02-19 | 1993-09-10 | Fujitsu Ltd | Active noise eliminating system and filter coefficient updating method therefor |
| JPH05232975A (en) * | 1992-02-25 | 1993-09-10 | Hitachi Plant Eng & Constr Co Ltd | Electronic noise eliminating system |
| JPH0772873A (en) * | 1993-09-06 | 1995-03-17 | Sharp Corp | Active muffler |
| JPH07168585A (en) * | 1993-12-10 | 1995-07-04 | Fujitsu Ltd | Active noise control device |
| US5850458A (en) * | 1994-04-28 | 1998-12-15 | Unisia Jecs Corporation | Apparatus and method for actively reducing noise in vehicular passengers compartment |
| JPH094530A (en) * | 1995-06-19 | 1997-01-07 | Unisia Jecs Corp | Active noise controller for automobile |
| US20020150260A1 (en) * | 2001-04-12 | 2002-10-17 | Mcwilliam Richard Donald | Low frequency active noise control |
| US20030219132A1 (en) * | 2002-04-04 | 2003-11-27 | Brigham Young University | Multi-channel active control system and method for the reduction of tonal noise from an axial fan |
| US8248297B1 (en) * | 2011-04-11 | 2012-08-21 | Advanced Testing Technologies, Inc. | Phase noise measurement system and method |
| CN202420891U (en) * | 2012-01-15 | 2012-09-05 | 洛阳理工学院 | Performance test device of silencer |
| CN102818711A (en) * | 2012-01-15 | 2012-12-12 | 洛阳理工学院 | Silencer performance testing device |
| CN104317268A (en) * | 2014-10-30 | 2015-01-28 | 林波荣 | Architectural indoor environment monitoring, feedback and control system and method based on group satisfaction degree customization and energy conservation |
| CN106671912A (en) * | 2015-11-06 | 2017-05-17 | 现代自动车株式会社 | Vehicle combustion noise-masking control apparatus and method of using the same |
| WO2017172916A1 (en) * | 2016-03-31 | 2017-10-05 | 3M Innovative Properties Company | Noise simulating booth for safely testing and demonstrating hearing protection equipment |
| CN106017665A (en) * | 2016-06-27 | 2016-10-12 | 洛阳理工学院 | Passenger seat sound quality auditory perception test device |
| CN205748629U (en) * | 2016-06-27 | 2016-11-30 | 洛阳理工学院 | Passenger-seat sound quality Auditory Perception test device |
| CN108357445A (en) * | 2018-03-20 | 2018-08-03 | 吉林大学 | Car masking sound quality self-adapting control system and method |
| CN108278438A (en) * | 2018-03-22 | 2018-07-13 | 浙江工业大学 | A kind of duct noise active control device and method |
| CN209045162U (en) * | 2018-09-28 | 2019-06-28 | 天津职业技术师范大学 | Noise impedance test macro in a kind of airflow line |
Non-Patent Citations (1)
| Title |
|---|
| 袁建昆等: "客车车内声品质控制及动态评价指标研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》, pages 12 - 20 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916609A (en) * | 2019-03-20 | 2019-06-21 | 武汉理工大学 | A kind of modification method and device of built-up sound source noise signal |
| CN111536587A (en) * | 2020-04-24 | 2020-08-14 | 青岛海信日立空调系统有限公司 | Air conditioner |
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