EP0342353A3 - Arrangement for diminishing the noise level within a motor car - Google Patents

Arrangement for diminishing the noise level within a motor car Download PDF

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Publication number
EP0342353A3
EP0342353A3 EP19890106308 EP89106308A EP0342353A3 EP 0342353 A3 EP0342353 A3 EP 0342353A3 EP 19890106308 EP19890106308 EP 19890106308 EP 89106308 A EP89106308 A EP 89106308A EP 0342353 A3 EP0342353 A3 EP 0342353A3
Authority
EP
European Patent Office
Prior art keywords
arrangement
noise
noise level
noise sensor
diminishing
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
Application number
EP19890106308
Other languages
German (de)
French (fr)
Other versions
EP0342353B1 (en
EP0342353A2 (en
Inventor
R. Dr. Freymann
R. Beer
R. Schmaderer
K. Stricker
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
Publication of EP0342353A2 publication Critical patent/EP0342353A2/en
Publication of EP0342353A3 publication Critical patent/EP0342353A3/en
Application granted granted Critical
Publication of EP0342353B1 publication Critical patent/EP0342353B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10K11/175—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
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • 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
    • G10K11/1781—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G10K11/17823—Reference signals, e.g. ambient acoustic environment
    • 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
    • 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
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3046—Multiple acoustic inputs, multiple acoustic outputs
    • 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
    • G10K2210/3216—Cancellation means disposed in the vicinity of the source
    • 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

Abstract

Eine Anordnung zur Verminderung des Geräuschpegels im Innenraum eines Kraftfahrzeuges umfaßt mindestens einen Geräuschsensor, mindestens einen Lautsprecher und eine Regeleinrichtung, die als Istgröße das Ausgangssignal des Geräuschsensors erhält und ein den Lautsprecher beaufschlagendes Stellsignal abgibt. Um eine wirksame und gegenüber Veränderungen des akustischen Übertragungsverhaltens des Innenraumes stabile Geräuschminderung über einen großen Frequenz­ bereich zu erzielen, ist erfindungsgemäß als Geräusch­ sensor ein in einem Helmholtz-Resonator unterge­ brachtes Mikrofon verwendet, und der oder die Laut­ sprecher sind nahe den Orten maximalen Schalldruckes von zu dämpfendem Hohlraumeigenfrequenzen des Kraft­ fahrzeuges angeordnet. An arrangement to reduce the noise level in the interior of a motor vehicle comprises at least a noise sensor, at least one speaker and a control device that is the actual variable Output signal of the noise sensor receives and on emits a control signal to the loudspeaker. To be effective and against changes in the acoustic transmission behavior of the interior stable noise reduction over a large frequency To achieve range is according to the invention as a noise sensor housed in a Helmholtz resonator used microphone, and the sound or sounds Speakers are close to the locations of maximum sound pressure of cavity natural frequencies of the force to be damped arranged vehicle.

EP89106308A 1988-05-18 1989-04-10 Arrangement for diminishing the noise level within a motor car Expired - Lifetime EP0342353B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3816921 1988-05-18
DE3816921A DE3816921A1 (en) 1988-05-18 1988-05-18 ARRANGEMENT FOR REDUCING NOISE LEVEL IN THE INTERIOR OF A MOTOR VEHICLE

Publications (3)

Publication Number Publication Date
EP0342353A2 EP0342353A2 (en) 1989-11-23
EP0342353A3 true EP0342353A3 (en) 1991-03-20
EP0342353B1 EP0342353B1 (en) 1993-08-11

Family

ID=6354628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106308A Expired - Lifetime EP0342353B1 (en) 1988-05-18 1989-04-10 Arrangement for diminishing the noise level within a motor car

Country Status (2)

Country Link
EP (1) EP0342353B1 (en)
DE (2) DE3816921A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH083395B2 (en) * 1988-09-30 1996-01-17 株式会社東芝 Silencer for cooling system
DE3923740C1 (en) * 1989-07-18 1990-12-06 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De
DE4015313A1 (en) * 1990-05-12 1991-11-14 Opel Adam Ag ACTIVE NOISE REDUCTION SYSTEM FOR THE INTERIOR OF MOTOR VEHICLES
DE4226885C2 (en) * 1992-08-13 2001-04-19 Bayerische Motoren Werke Ag Sound absorption process for motor vehicles
FR2732807B1 (en) * 1995-04-04 1997-05-16 Technofirst PERSONAL ACTIVE SOUND ATTENUATION METHOD AND DEVICE, SEAT PROVIDED WITH THE CORRESPONDING DEVICE, AND ACTIVE SOUND ATTENUATION SPACE OBTAINED
DE19742741C2 (en) * 1997-09-27 2001-08-16 Audi Ag Device for active low-frequency noise suppression in motor vehicles
DE19750218C2 (en) * 1997-11-13 1999-09-30 Dornier Gmbh Method for suppressing periodic pressure changes in a cavity with an external flow and an opening
DE102004016689A1 (en) * 2004-04-05 2005-10-27 Volkswagen Ag Improvement of acoustic situation in passenger cabin of vehicle, comprising use of Helmholtz-resonators
DE102007032600A1 (en) 2007-07-11 2009-01-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Apparatus and method for improving the attenuation of acoustic waves
DE102010021039B4 (en) * 2010-05-19 2015-02-12 Magna Car Top Systems Gmbh Roof for a passenger car

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518805A (en) * 1945-08-24 1950-08-15 Massa Frank Resonant chamber for microphones
EP0098594A2 (en) * 1982-07-07 1984-01-18 Nissan Motor Co., Ltd. A method and apparatus for controlling the sound field in a vehicle cabin or the like
EP0103257A1 (en) * 1982-09-09 1984-03-21 SINTRA-ALCATEL Société Anonyme dite: Method and apparatus to reduce static noise
GB2149614A (en) * 1983-10-31 1985-06-12 Secr Defence Active noise reduction apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1444097A (en) * 1965-05-17 1966-07-01 Renault Method and device for damping acoustic resonances in the passenger compartment of a vehicle
DE3106029A1 (en) * 1981-02-19 1982-09-09 Volkswagenwerk Ag, 3180 Wolfsburg Method and arrangement for reducing the noise level in the head region of motor vehicle occupants
ZA825676B (en) * 1981-08-11 1983-06-29 Sound Attenuators Ltd Method and apparatus for low frequency active attennuation
FR2531023B1 (en) * 1982-08-02 1987-04-30 Peugeot NOISE MITIGATION DEVICE IN THE INTERIOR OF A MOTOR VEHICLE
DE3612204A1 (en) * 1986-04-11 1987-10-15 Audi Ag Device for reducing noise

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518805A (en) * 1945-08-24 1950-08-15 Massa Frank Resonant chamber for microphones
EP0098594A2 (en) * 1982-07-07 1984-01-18 Nissan Motor Co., Ltd. A method and apparatus for controlling the sound field in a vehicle cabin or the like
EP0103257A1 (en) * 1982-09-09 1984-03-21 SINTRA-ALCATEL Société Anonyme dite: Method and apparatus to reduce static noise
GB2149614A (en) * 1983-10-31 1985-06-12 Secr Defence Active noise reduction apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
D.K. ANAND: "Introduction to control systems", 1984, Seiten 180-196, Pergamon Press, Oxford, GB *

Also Published As

Publication number Publication date
EP0342353B1 (en) 1993-08-11
DE58905218D1 (en) 1993-09-16
EP0342353A2 (en) 1989-11-23
DE3816921A1 (en) 1989-11-30

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