DE59308951D1 - Sound absorption process for motor vehicles - Google Patents

Sound absorption process for motor vehicles

Info

Publication number
DE59308951D1
DE59308951D1 DE59308951T DE59308951T DE59308951D1 DE 59308951 D1 DE59308951 D1 DE 59308951D1 DE 59308951 T DE59308951 T DE 59308951T DE 59308951 T DE59308951 T DE 59308951T DE 59308951 D1 DE59308951 D1 DE 59308951D1
Authority
DE
Germany
Prior art keywords
motor vehicles
sound absorption
absorption process
sound
vehicles
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 - Fee Related
Application number
DE59308951T
Other languages
German (de)
Inventor
Raymond Dr Freymann
Helmut Spannheimer
Rainer Beer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Application granted granted Critical
Publication of DE59308951D1 publication Critical patent/DE59308951D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
DE59308951T 1992-08-13 1993-07-13 Sound absorption process for motor vehicles Expired - Fee Related DE59308951D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4226885A DE4226885C2 (en) 1992-08-13 1992-08-13 Sound absorption process for motor vehicles

Publications (1)

Publication Number Publication Date
DE59308951D1 true DE59308951D1 (en) 1998-10-08

Family

ID=6465521

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4226885A Expired - Fee Related DE4226885C2 (en) 1992-08-13 1992-08-13 Sound absorption process for motor vehicles
DE59308951T Expired - Fee Related DE59308951D1 (en) 1992-08-13 1993-07-13 Sound absorption process for motor vehicles

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4226885A Expired - Fee Related DE4226885C2 (en) 1992-08-13 1992-08-13 Sound absorption process for motor vehicles

Country Status (2)

Country Link
EP (1) EP0586831B1 (en)
DE (2) DE4226885C2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4446080B4 (en) * 1994-12-22 2004-03-18 Bayerische Motoren Werke Ag Sound absorption system for motor vehicles
EP0916817B1 (en) 1997-11-18 2006-02-08 Faurecia Abgastechnik GmbH Active silencer
DE19861018C2 (en) 1998-12-15 2001-06-13 Fraunhofer Ges Forschung Controlled acoustic waveguide for sound absorption
DE60006623T2 (en) * 1999-09-16 2004-09-23 Siemens Vdo Automotive Inc., Chatham Active tuned Helmholtz resonator with forced response
GB2387522B (en) * 2002-04-10 2005-09-28 Hobelsberger Max Tunable active sound absorbers
DE102004016689A1 (en) * 2004-04-05 2005-10-27 Volkswagen Ag Improvement of acoustic situation in passenger cabin of vehicle, comprising use of Helmholtz-resonators
FR2899011B1 (en) * 2006-03-24 2008-07-18 Eurocopter France METHOD AND DEVICE FOR PROCESSING NOISE ON BOARD AN AIRCRAFT
WO2013064602A1 (en) 2011-11-04 2013-05-10 Empa Eidgenössische Materialprüfungs- Und Forschungsanstalt Adaptive helmholtz resonator
DE102017115271B4 (en) * 2017-07-07 2019-04-18 Tenneco Gmbh Method for operating a motor vehicle noise suppression system
WO2019007700A1 (en) 2017-07-07 2019-01-10 Tenneco Gmbh Noise cancellation system
CN111720189B (en) * 2019-03-22 2024-01-23 广州汽车集团股份有限公司 Exhaust system sound quality adjusting device and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3412432A1 (en) * 1984-04-03 1985-10-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Sound-absorbing building element
DE3720946A1 (en) * 1986-07-03 1988-01-07 Volkswagen Ag Body platform for a motor vehicle
DE3729765A1 (en) * 1987-09-05 1989-03-16 Bayerische Motoren Werke Ag Sound absorption system
US5119427A (en) * 1988-03-14 1992-06-02 Hersh Alan S Extended frequency range Helmholtz resonators
DE3816921A1 (en) * 1988-05-18 1989-11-30 Bayerische Motoren Werke Ag ARRANGEMENT FOR REDUCING NOISE LEVEL IN THE INTERIOR OF A MOTOR VEHICLE
DE4011705A1 (en) * 1990-04-11 1991-10-17 Freudenberg Carl Fa AIR SOUND ABSORBING MOLDED PART
US5119902A (en) * 1990-04-25 1992-06-09 Ford Motor Company Active muffler transducer arrangement
DE4027511C1 (en) * 1990-08-30 1991-10-02 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen, De

Also Published As

Publication number Publication date
DE4226885C2 (en) 2001-04-19
EP0586831A3 (en) 1994-03-30
DE4226885A1 (en) 1994-02-17
EP0586831B1 (en) 1998-09-02
EP0586831A2 (en) 1994-03-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee