CA2050996A1 - Systeme acoustique a transducteur et a venturi - Google Patents
Systeme acoustique a transducteur et a venturiInfo
- Publication number
- CA2050996A1 CA2050996A1 CA2050996A CA2050996A CA2050996A1 CA 2050996 A1 CA2050996 A1 CA 2050996A1 CA 2050996 A CA2050996 A CA 2050996A CA 2050996 A CA2050996 A CA 2050996A CA 2050996 A1 CA2050996 A1 CA 2050996A1
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- venturi
- acoustic
- transducer
- input
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/14—Silencing apparatus characterised by method of silencing by adding air to exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
- F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
-
- 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
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
-
- 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
- G10K2210/109—Compressors, e.g. fans
-
- 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
- G10K2210/30—Means
- G10K2210/321—Physical
- G10K2210/3214—Architectures, e.g. special constructional features or arrangements of features
-
- 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
- G10K2210/3219—Geometry of the configuration
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Sampling And Sample Adjustment (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/582,514 | 1990-09-13 | ||
US07/582,514 US5088575A (en) | 1990-09-13 | 1990-09-13 | Acoustic system with transducer and venturi |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2050996A1 true CA2050996A1 (fr) | 1992-03-14 |
CA2050996C CA2050996C (fr) | 1996-09-03 |
Family
ID=24329444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002050996A Expired - Fee Related CA2050996C (fr) | 1990-09-13 | 1991-09-09 | Systeme acoustique a transducteur et a venturi |
Country Status (2)
Country | Link |
---|---|
US (1) | US5088575A (fr) |
CA (1) | CA2050996C (fr) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9118779D0 (en) * | 1991-08-29 | 1991-10-16 | Active Noise & Vibration Tech | Muffler |
US5550334A (en) * | 1991-10-30 | 1996-08-27 | Noise Cancellation Technologies, Inc. | Actively sound reduced muffler having a venturi effect configuration |
WO1993009334A1 (fr) * | 1991-10-30 | 1993-05-13 | Noise Cancellation Technologies, Inc. | Silencieux presentant une configuration creant un effet venturi |
US5446249A (en) * | 1993-07-13 | 1995-08-29 | Digisonix, Inc. | Dry acoustic system preventing condensation |
US6160892A (en) * | 1993-12-30 | 2000-12-12 | Bbn Corporation | Active muffler |
US5513266A (en) * | 1994-04-29 | 1996-04-30 | Digisonix, Inc. | Integral active and passive silencer |
DE4430698C1 (de) * | 1994-08-30 | 1996-02-08 | Freudenberg Carl Fa | Luftschalldämpfer |
US5693918A (en) * | 1994-09-06 | 1997-12-02 | Digisonix, Inc. | Active exhaust silencer |
US5541373A (en) * | 1994-09-06 | 1996-07-30 | Digisonix, Inc. | Active exhaust silencer |
US6201872B1 (en) | 1995-03-12 | 2001-03-13 | Hersh Acoustical Engineering, Inc. | Active control source cancellation and active control Helmholtz resonator absorption of axial fan rotor-stator interaction noise |
US5848168A (en) * | 1996-11-04 | 1998-12-08 | Tenneco Automotive Inc. | Active noise conditioning system |
US5930371A (en) * | 1997-01-07 | 1999-07-27 | Nelson Industries, Inc. | Tunable acoustic system |
US6295363B1 (en) | 1997-03-20 | 2001-09-25 | Digisonix, Inc. | Adaptive passive acoustic attenuation system |
GB9906258D0 (en) | 1999-03-11 | 1999-09-15 | Gkn Westland Helicopters Ltd | Apparatus from the suppression of infra red emissions from an engine |
US6671224B1 (en) * | 2002-08-26 | 2003-12-30 | Schlumberger Technology Corporation | Active reduction of tool borne noise in a sonic logging tool |
JP4511436B2 (ja) * | 2005-08-15 | 2010-07-28 | ビーバ株式会社 | 反射板式消音管 |
DE102009032553A1 (de) * | 2009-07-10 | 2011-01-20 | J. Eberspächer GmbH & Co. KG | Abgasanlage und zugehörige Verbindungsanordnung für einen Aktuator |
US9394812B2 (en) * | 2014-07-09 | 2016-07-19 | Aai Corporation | Attenuating engine noise using a reverse resonator |
DE102016110027A1 (de) | 2016-05-31 | 2017-11-30 | Faurecia Emissions Control Technologies, Germany Gmbh | Abgasanlage und Verfahren zur Verhinderung einer Fremdstoffablagerung |
CN111036006B (zh) * | 2019-12-24 | 2021-08-03 | 上海海事大学 | 一种声波增强的船舶废气脱硫及颗粒物去除装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1217021A (en) * | 1916-02-15 | 1917-02-20 | Alexis Lebedeff | Silencer for internal-combustion engines. |
US2043416A (en) * | 1933-01-27 | 1936-06-09 | Lueg Paul | Process of silencing sound oscillations |
US4473906A (en) * | 1980-12-05 | 1984-09-25 | Lord Corporation | Active acoustic attenuator |
US4487289A (en) * | 1982-03-01 | 1984-12-11 | Nelson Industries, Inc. | Exhaust muffler with protective shield |
US4677677A (en) * | 1985-09-19 | 1987-06-30 | Nelson Industries Inc. | Active sound attenuation system with on-line adaptive feedback cancellation |
US4665549A (en) * | 1985-12-18 | 1987-05-12 | Nelson Industries Inc. | Hybrid active silencer |
US4697668A (en) * | 1986-01-13 | 1987-10-06 | Nelson Industries Inc. | Aspirating muffler |
US4677676A (en) * | 1986-02-11 | 1987-06-30 | Nelson Industries, Inc. | Active attenuation system with on-line modeling of speaker, error path and feedback pack |
US4736431A (en) * | 1986-10-23 | 1988-04-05 | Nelson Industries, Inc. | Active attenuation system with increased dynamic range |
US4815139A (en) * | 1988-03-16 | 1989-03-21 | Nelson Industries, Inc. | Active acoustic attenuation system for higher order mode non-uniform sound field in a duct |
US4837834A (en) * | 1988-05-04 | 1989-06-06 | Nelson Industries, Inc. | Active acoustic attenuation system with differential filtering |
-
1990
- 1990-09-13 US US07/582,514 patent/US5088575A/en not_active Expired - Lifetime
-
1991
- 1991-09-09 CA CA002050996A patent/CA2050996C/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2050996C (fr) | 1996-09-03 |
US5088575A (en) | 1992-02-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |