DE59707085D1 - Method and device for active noise reduction of gas flows - Google Patents
Method and device for active noise reduction of gas flowsInfo
- Publication number
- DE59707085D1 DE59707085D1 DE59707085T DE59707085T DE59707085D1 DE 59707085 D1 DE59707085 D1 DE 59707085D1 DE 59707085 T DE59707085 T DE 59707085T DE 59707085 T DE59707085 T DE 59707085T DE 59707085 D1 DE59707085 D1 DE 59707085D1
- Authority
- DE
- Germany
- Prior art keywords
- noise reduction
- gas flows
- active noise
- active
- flows
- 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.)
- Expired - Lifetime
Links
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
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17857—Geometric disposition, e.g. placement of microphones
-
- 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
- G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
-
- 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
- G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/101—One dimensional
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/112—Ducts
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
- G10K2210/12822—Exhaust pipes or mufflers
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3212—Actuator details, e.g. composition or microstructure
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3212—Actuator details, e.g. composition or microstructure
- G10K2210/32121—Fluid amplifiers, e.g. modulated gas flow speaker using electrovalves
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Separation Of Gases By Adsorption (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19617465A DE19617465C2 (en) | 1996-05-02 | 1996-05-02 | Method and device for active noise reduction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE59707085D1 true DE59707085D1 (en) | 2002-05-29 |
Family
ID=7793005
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19617465A Expired - Fee Related DE19617465C2 (en) | 1996-05-02 | 1996-05-02 | Method and device for active noise reduction |
DE59707085T Expired - Lifetime DE59707085D1 (en) | 1996-05-02 | 1997-02-21 | Method and device for active noise reduction of gas flows |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19617465A Expired - Fee Related DE19617465C2 (en) | 1996-05-02 | 1996-05-02 | Method and device for active noise reduction |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0805431B1 (en) |
JP (1) | JPH112113A (en) |
DE (2) | DE19617465C2 (en) |
ES (1) | ES2175205T3 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2293076C (en) * | 1999-12-22 | 2010-03-30 | Man-Chun Tse | Fan and compressor noise attenuation |
DE10049884C1 (en) * | 2000-10-10 | 2002-04-04 | Horst Schmitt | Noise protection device, for preventing environmental noise pollution, uses pressurized air or gas curtain for screening noise source |
WO2016005580A1 (en) | 2014-07-11 | 2016-01-14 | Tenneco Gmbh | Sound system for a motor vehicle |
DE102017203182B4 (en) | 2017-02-28 | 2021-09-02 | Audi Ag | Sound generating device for generating exhaust system sound and an associated motor vehicle |
DE102017203181B4 (en) | 2017-02-28 | 2021-08-26 | Audi Ag | Sound generating device for generating exhaust system sound and an associated motor vehicle |
DE202017007444U1 (en) | 2017-11-03 | 2021-08-10 | Cisma Solutions Aps | Exhaust cover with sound source |
DE102017219573B4 (en) * | 2017-11-03 | 2021-11-11 | Cisma Solutions Aps | Exhaust cover with sound source |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02136504A (en) * | 1988-11-16 | 1990-05-25 | Aisin Seiki Co Ltd | Muffler of internal combustion engine |
GB8928052D0 (en) * | 1989-12-12 | 1990-02-14 | Lotus Group Plc | Control of pressure vibrations in ducts |
DE4341951A1 (en) * | 1992-12-17 | 1994-06-23 | Volkswagen Ag | Interference noise damper for exhaust gas system |
US5325438A (en) * | 1993-02-01 | 1994-06-28 | At&T Bell Laboratories | Active noise-cancellation system for automotive mufflers |
-
1996
- 1996-05-02 DE DE19617465A patent/DE19617465C2/en not_active Expired - Fee Related
-
1997
- 1997-02-21 DE DE59707085T patent/DE59707085D1/en not_active Expired - Lifetime
- 1997-02-21 EP EP97102834A patent/EP0805431B1/en not_active Expired - Lifetime
- 1997-02-21 ES ES97102834T patent/ES2175205T3/en not_active Expired - Lifetime
- 1997-04-18 JP JP9101456A patent/JPH112113A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE19617465C2 (en) | 1999-05-20 |
EP0805431B1 (en) | 2002-04-24 |
EP0805431A3 (en) | 1999-10-20 |
JPH112113A (en) | 1999-01-06 |
ES2175205T3 (en) | 2002-11-16 |
EP0805431A2 (en) | 1997-11-05 |
DE19617465A1 (en) | 1997-11-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |