DE69615867T2 - Vorrichtung und verfahren zum verminderung vom motorlärm - Google Patents

Vorrichtung und verfahren zum verminderung vom motorlärm

Info

Publication number
DE69615867T2
DE69615867T2 DE69615867T DE69615867T DE69615867T2 DE 69615867 T2 DE69615867 T2 DE 69615867T2 DE 69615867 T DE69615867 T DE 69615867T DE 69615867 T DE69615867 T DE 69615867T DE 69615867 T2 DE69615867 T2 DE 69615867T2
Authority
DE
Germany
Prior art keywords
engine noise
reducing engine
reducing
noise
engine
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
Application number
DE69615867T
Other languages
English (en)
Other versions
DE69615867D1 (de
Inventor
Gary Everingham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Canada Ltd
Original Assignee
Siemens Canada Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Canada Ltd filed Critical Siemens Canada Ltd
Application granted granted Critical
Publication of DE69615867D1 publication Critical patent/DE69615867D1/de
Publication of DE69615867T2 publication Critical patent/DE69615867T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1244—Intake silencers ; Sound modulation, transmission or amplification using interference; Masking or reflecting sound
    • F02M35/125—Intake silencers ; Sound modulation, transmission or amplification using interference; Masking or reflecting sound by using active elements, 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
    • 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
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • 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
    • 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
    • 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
    • G10K2210/3214—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
    • 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
    • G10K2210/3227—Resonators
    • G10K2210/32272—Helmholtz resonators
    • 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
    • G10K2210/50—Miscellaneous
    • G10K2210/509—Hybrid, i.e. combining different technologies, e.g. passive and active

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)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
DE69615867T 1995-11-30 1996-11-21 Vorrichtung und verfahren zum verminderung vom motorlärm Expired - Lifetime DE69615867T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/565,738 US5828759A (en) 1995-11-30 1995-11-30 System and method for reducing engine noise
PCT/CA1996/000763 WO1997020307A1 (en) 1995-11-30 1996-11-21 System and method for reducing engine noise

Publications (2)

Publication Number Publication Date
DE69615867D1 DE69615867D1 (de) 2001-11-15
DE69615867T2 true DE69615867T2 (de) 2002-05-02

Family

ID=24259904

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69615867T Expired - Lifetime DE69615867T2 (de) 1995-11-30 1996-11-21 Vorrichtung und verfahren zum verminderung vom motorlärm

Country Status (8)

Country Link
US (1) US5828759A (de)
EP (1) EP0878001B1 (de)
JP (1) JP2000501471A (de)
KR (1) KR19990071802A (de)
CN (1) CN1207819A (de)
BR (1) BR9611800A (de)
DE (1) DE69615867T2 (de)
WO (1) WO1997020307A1 (de)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2740599B1 (fr) * 1995-10-30 1997-12-19 Technofirst Dispositif d'attenuation acoustique active destine a etre dispose a l'interieur d'un conduit, en particulier pour l'insonorisation de reseau de ventilation et/ou de climatisation
US6084971A (en) * 1997-06-10 2000-07-04 Siemens Electric Limited Active noise attenuation system
US6215885B1 (en) * 1997-06-26 2001-04-10 George R. Geiger Audio speaker
US6072880A (en) * 1998-02-27 2000-06-06 Tenneco Automotive Inc. Modular active silencer with port dish
US6005957A (en) * 1998-02-27 1999-12-21 Tenneco Automotive Inc. Loudspeaker pressure plate
AU5286699A (en) * 1998-07-22 2000-02-14 Friedmund Nagel Device and method for reducing the noise emissions of internal combustion engines and for diagnosing the same
DE19832979C1 (de) * 1998-07-22 1999-11-04 Friedmund Nagel Vorrichtung und Verfahren zur Reduzierung der Schallemission bei Verbrennungsmotoren
US6771787B1 (en) * 1998-09-03 2004-08-03 Bose Corporation Waveguide electroacoustical transducing
JP2000120497A (ja) * 1998-10-19 2000-04-25 Honda Motor Co Ltd 自動車用吸気消音装置
DE60001610T2 (de) * 1999-09-14 2003-11-06 Siemens Vdo Automotive Inc Aktiv gesteuertes Einlasslärm mir Quadripole-Einlassvorrichtung
DE60000904T2 (de) * 1999-09-14 2003-09-18 Siemens Vdo Automotive Inc Aktiv gesteuerter Einlasslärm mit Multipole-Einlassvorrichtung
US6332511B1 (en) * 1999-12-07 2001-12-25 Burgess-Manning, Inc. Silencer assembly having single strand fiberglass acoustic pack material
US6700984B1 (en) * 1999-12-07 2004-03-02 California Institute Of Technology Non-linearly tapering transmission line speakers
KR20010065212A (ko) * 1999-12-29 2001-07-11 이계안 차량 엔진용 밸브 트레인의 흡·배기 밸브와 밸브씨트 간의 접촉성을 감지하기 위한 음파 검사기
US6394062B2 (en) 2000-03-30 2002-05-28 Siemens Canada Limited Dust sensing assembly air intake system
US7162040B2 (en) * 2000-03-30 2007-01-09 Siemens Vdo Automotive, Inc. Mounting assembly for active noise attenuation system
US7035414B2 (en) * 2000-03-30 2006-04-25 Siemens Vdo Automotive Inc. Active noise attenuation system
EP1143411A3 (de) * 2000-04-06 2004-11-03 Siemens VDO Automotive Inc. Stabilitätslösung für aktive Lärmdämpfung
US20010046302A1 (en) * 2000-04-14 2001-11-29 Daly Paul D. Active noise cancellation optimized air gaps
US20010046300A1 (en) * 2000-04-17 2001-11-29 Mclean Ian R. Offline active control of automotive noise
DE10021031A1 (de) * 2000-05-02 2001-11-08 Mann & Hummel Filter Leitungssystem mit elektromechanischem Wandler zur Erzeugung eines Korrekturgeräusches
US20010036279A1 (en) * 2000-05-08 2001-11-01 Daly Paul D. Active noise cancellation system
US20010036282A1 (en) * 2000-05-12 2001-11-01 Roy Haworth Active noise attenuation inlet microphone system
US6940983B2 (en) * 2000-05-19 2005-09-06 Siemens Vdo Automotive Inc. Resonator for active noise attenuation system
US20010036280A1 (en) * 2000-06-05 2001-11-01 Astorino John F. Active noise cancellation system recalibration
US6557665B2 (en) 2000-06-06 2003-05-06 Siemens Canada Limited Active dipole inlet using drone cone speaker driver
US6996242B2 (en) * 2000-06-06 2006-02-07 Siemens Vdo Automotive Inc. Integrated and active noise control inlet
US6605131B2 (en) 2000-06-13 2003-08-12 Siemens Vdo Automotive Inc. Integrated active noise control with self-cleaning filter apparatus
US20020039422A1 (en) * 2000-09-20 2002-04-04 Daly Paul D. Driving mode for active noise cancellation
US6775384B2 (en) 2000-09-20 2004-08-10 Siemens Vdo Automotive Inc. Environmentally robust noise attenuation system
US6898289B2 (en) 2000-09-20 2005-05-24 Siemens Vdo Automotive Inc. Integrated active noise attenuation system and fluid reservoir
US20020076058A1 (en) * 2000-12-19 2002-06-20 Astorino John Frank Engine rotation reference signal for noise attenuation
US6702061B2 (en) 2001-03-15 2004-03-09 Siemens Vdo Automotive, Inc. Environmentally protected microphone for an active noise control system
US6959093B2 (en) * 2001-04-12 2005-10-25 Siemens Vdo Automotive Inc. Low frequency active noise control
DE10144787C5 (de) * 2001-09-11 2009-11-12 Continental Automotive Gmbh Fahrzeug mit einem Schallabstrahlelement
DE10144786B4 (de) * 2001-09-11 2006-11-23 Siemens Ag Fahrzeug mit einem Lautsprecher
US6684977B2 (en) * 2001-09-13 2004-02-03 Siemens Vdo Automotive, Inc. Speaker retention assembly for an active noise control system
WO2003028007A1 (en) * 2001-09-25 2003-04-03 Siemens Vdo Automotive Inc. Modular active noise cancellation air filter speaker and microphone assembly
US20030112981A1 (en) * 2001-12-17 2003-06-19 Siemens Vdo Automotive, Inc. Active noise control with on-line-filtered C modeling
US20030215101A1 (en) * 2002-05-15 2003-11-20 Siemens Vdo Automotive, Inc. Active noise control system with an elongated transmission member
DE10221448B4 (de) * 2002-05-15 2014-02-13 Mahle Filtersysteme Gmbh Frischluftanlage für ein Kraftfahrzeug
US7279964B2 (en) 2003-07-30 2007-10-09 Siemens Aktiengesellschaft Drive circuit, device, and method for suppressing noise, and use
JP2005167315A (ja) * 2003-11-28 2005-06-23 Pioneer Electronic Corp スピーカユニット
US8351629B2 (en) * 2008-02-21 2013-01-08 Robert Preston Parker Waveguide electroacoustical transducing
US8295526B2 (en) * 2008-02-21 2012-10-23 Bose Corporation Low frequency enclosure for video display devices
DE102008018085A1 (de) * 2008-04-09 2009-10-15 J. Eberspächer GmbH & Co. KG Aktiver Schalldämpfer
US8351630B2 (en) * 2008-05-02 2013-01-08 Bose Corporation Passive directional acoustical radiating
DE102009032553A1 (de) * 2009-07-10 2011-01-20 J. Eberspächer GmbH & Co. KG Abgasanlage und zugehörige Verbindungsanordnung für einen Aktuator
DE102009040898A1 (de) * 2009-09-11 2011-03-17 Volkswagen Ag Fahrzeug mit einer Audioanlage zur Erzeugung eines Motorgeräuschs
US8265310B2 (en) * 2010-03-03 2012-09-11 Bose Corporation Multi-element directional acoustic arrays
US8553894B2 (en) 2010-08-12 2013-10-08 Bose Corporation Active and passive directional acoustic radiating
US9218801B2 (en) * 2010-09-29 2015-12-22 GM Global Technology Operations LLC Aural smoothing of a vehicle
DE102010056398A1 (de) * 2010-12-28 2012-06-28 GM Global Technology Operations LLC Lüftungsdüse für ein Kraftfahrzeug
KR101337907B1 (ko) * 2011-11-14 2013-12-09 기아자동차주식회사 차량의 흡기계 능동 소음 제어 장치
DE102012201725B4 (de) * 2012-02-06 2016-02-25 Eberspächer Exhaust Technology GmbH & Co. KG Aktiver Schalldämpfer
CN102651215B (zh) * 2012-04-27 2014-03-12 浙江吉利汽车研究院有限公司杭州分公司 汽车发动机噪声产生装置及其控制方法
US20140212265A1 (en) * 2013-01-30 2014-07-31 Robert A. Putnam Gas turbine inlet silencer
US9508337B2 (en) * 2013-05-17 2016-11-29 Ask Industries Societa Per Azioni Low-noise fume extractor hood
US9394812B2 (en) * 2014-07-09 2016-07-19 Aai Corporation Attenuating engine noise using a reverse resonator
EP3234314B1 (de) * 2014-12-19 2020-03-11 General Electric Company System zur aktiven geräuschregelung
US10057701B2 (en) 2015-03-31 2018-08-21 Bose Corporation Method of manufacturing a loudspeaker
US9451355B1 (en) 2015-03-31 2016-09-20 Bose Corporation Directional acoustic device
FR3034564B1 (fr) * 2015-04-02 2017-04-28 Focal Jmlab Dispositif d'adaptation d'impedance acoustique et haut-parleur equipe d'un tel dispositif
DE102016100542A1 (de) * 2016-01-14 2017-07-20 Faurecia Emissions Control Technologies, Germany Gmbh Verfahren zur Erzeugung eines Ansteuerungssignals für einen in einem Motorfahrzeug angeordneten Lautsprecher sowie Abgasanlage für einen Motor und Soundsystem für eine Fahrgastzelle
EP3446307B1 (de) 2016-04-20 2022-03-23 General Electric Company Systeme und vorrichtungen zur aktiven geräuschunterdrückung
BE1024535B1 (fr) * 2016-09-05 2018-04-04 Safran Aero Boosters S.A. Banc d'essai de turbomachine avec contrôle actif du bruit
US10040446B2 (en) 2016-10-24 2018-08-07 International Business Machines Corporation Reducing noise generated by a motorized device
CN110486927A (zh) * 2018-05-15 2019-11-22 中国船舶重工集团公司第七一一研究所 噪声主动控制设备
CN113775446B (zh) * 2021-08-31 2023-05-16 北汽福田汽车股份有限公司 发动机的进气系统和具有其的车辆

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936606A (en) * 1971-12-07 1976-02-03 Wanke Ronald L Acoustic abatement method and apparatus
GB1456018A (en) * 1972-11-24 1976-11-17 Nat Res Dev Active control of sound waves
GB2076049B (en) * 1980-05-17 1983-10-26 Rolls Royce Variable acoustic impedance lining
US4665549A (en) * 1985-12-18 1987-05-12 Nelson Industries Inc. Hybrid active silencer
GB8603678D0 (en) * 1986-02-14 1986-03-19 Gen Electric Co Plc Active noise control
US5446790A (en) * 1989-11-24 1995-08-29 Nippondenso Co., Ltd. Intake sound control apparatus
US5457749A (en) * 1990-04-09 1995-10-10 Noise Cancellation Technologies, Inc. Electronic muffler
US5319165A (en) * 1990-04-25 1994-06-07 Ford Motor Company Dual bandpass secondary source
US5229556A (en) * 1990-04-25 1993-07-20 Ford Motor Company Internal ported band pass enclosure for sound cancellation
JP3094517B2 (ja) * 1991-06-28 2000-10-03 日産自動車株式会社 能動型騒音制御装置
US5170019A (en) * 1991-07-25 1992-12-08 Lee Jung W Sound muffling device for internal combustion engines
JPH0598928A (ja) * 1991-10-11 1993-04-20 Nissan Motor Co Ltd 内燃機関の吸排気音低減装置
US5550334A (en) * 1991-10-30 1996-08-27 Noise Cancellation Technologies, Inc. Actively sound reduced muffler having a venturi effect configuration
JPH05134684A (ja) * 1991-11-12 1993-05-28 Fujitsu Ltd 消音装置
US5176114A (en) * 1992-04-20 1993-01-05 Siemens Automotive Limited Engine intake manifold tuning by active noise control
US5336856A (en) * 1992-07-07 1994-08-09 Arvin Industries, Inc. Electronic muffler assembly with exhaust bypass
JPH06101444A (ja) * 1992-09-21 1994-04-12 Sango Co Ltd 能動型消音器
JPH06149268A (ja) * 1992-11-02 1994-05-27 Fuji Heavy Ind Ltd 車室内騒音低減装置
SE505194C2 (sv) * 1992-11-03 1997-07-14 Electrolux Ab Ventilationsanordning för kök
DE4314204C1 (de) * 1993-04-30 1994-11-03 Daimler Benz Ag Abgasanlage für eine Brennkraftmaschine eines Fahrzeuges
PL173055B1 (pl) * 1993-07-07 1998-01-30 Leistritz Abgastech Aktywny tłumik dźwięku
DE4342133A1 (de) * 1993-12-10 1995-06-14 Nokia Deutschland Gmbh Anordnung zur aktiven Schalldämpfung
US5513266A (en) * 1994-04-29 1996-04-30 Digisonix, Inc. Integral active and passive silencer
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
EP0755045B1 (de) * 1995-07-20 2002-10-02 Harman Audio Electronic Systems GmbH Anordnung zur Auslöschung von Schallwellen

Also Published As

Publication number Publication date
EP0878001A1 (de) 1998-11-18
EP0878001B1 (de) 2001-10-10
WO1997020307A1 (en) 1997-06-05
JP2000501471A (ja) 2000-02-08
CN1207819A (zh) 1999-02-10
DE69615867D1 (de) 2001-11-15
BR9611800A (pt) 1999-07-13
KR19990071802A (ko) 1999-09-27
US5828759A (en) 1998-10-27

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