EP0512445A2 - Dispositif actif d'atténuation du bruit utilisant des signaux radio pour le cycle de calibration - Google Patents

Dispositif actif d'atténuation du bruit utilisant des signaux radio pour le cycle de calibration Download PDF

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Publication number
EP0512445A2
EP0512445A2 EP92107482A EP92107482A EP0512445A2 EP 0512445 A2 EP0512445 A2 EP 0512445A2 EP 92107482 A EP92107482 A EP 92107482A EP 92107482 A EP92107482 A EP 92107482A EP 0512445 A2 EP0512445 A2 EP 0512445A2
Authority
EP
European Patent Office
Prior art keywords
signal
calibration
calibration cycle
cycle according
entertainment
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
EP92107482A
Other languages
German (de)
English (en)
Other versions
EP0512445B1 (fr
EP0512445A3 (en
Inventor
Bernhard Dipl-Ing. Lange
Steven S. Langston
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.)
Adam Opel GmbH
Original Assignee
Adam Opel GmbH
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 Adam Opel GmbH filed Critical Adam Opel GmbH
Publication of EP0512445A2 publication Critical patent/EP0512445A2/fr
Publication of EP0512445A3 publication Critical patent/EP0512445A3/de
Application granted granted Critical
Publication of EP0512445B1 publication Critical patent/EP0512445B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • 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
    • G10K11/17813—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 acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • G10K11/17817—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 acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms between the output signals and the error signals, i.e. secondary path
    • 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
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive 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
    • G10K11/1787—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
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3023—Estimation of noise, e.g. on error signals
    • G10K2210/30232—Transfer functions, e.g. impulse response
    • 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
    • G10K2210/3045—Multiple acoustic inputs, single acoustic output
    • 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
    • G10K2210/3225—Radio or other sources used in ANC for transfer function estimation; Means to avoid interference between desired signals, e.g. from a car stereo, and the ANC signal
    • 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
    • G10K2210/504—Calibration

Definitions

  • the invention relates to the calibration cycle for an ANC system (Active Noise Control System) with at least one loudspeaker and at least one microphone.
  • ANC system Active Noise Control System
  • the calibration cycle is necessary to optimize the system properties. It should conveniently be repeated every now and then. In this way, the complex transfer function between loudspeakers on the one hand and microphones on the other is determined, which are then simulated in a control algorithm using an adaptive filter and make the ANC system optimally functional. It will be convenient to repeat this from time to time so as not to waste any potential in the function of the ANC system. On the other hand, the associated noise is perceived by the driver as unpleasant, which speaks against repetitions of the calibration cycle. However, if the operating parameters of the vehicle change, a new calibration cycle is necessary and should disturb the passengers as little as possible.
  • FIG. 1 shows the circuit diagram for an ANC system for the calibration cycle.
  • the loudspeaker 1 outputs an uncorrelated acoustic signal to the microphone 2 with a downstream amplifier via a filter amplifier 11.
  • the adaptive filter 3 connected in parallel to this path has a complex frequency response which is obtained from the calibration cycle which is obtained in the switching block correlation 4 for filter setting. Ideally, the value 0 remains at the summing point 5.
  • the system is calibrated. Should another passenger get on or other operating parameters change, a new calibration cycle is necessary.
  • An adaptation of the radio signal to the conditions of the subsequent network is identified by 6. This can be a level or runtime adjustment.
  • the logic circuit 7 which can be a summer or modulator or multiplexer, the noise signal is fed to the adapted radio signal.
  • Reference numeral 8 shows a summer. Since the input signal 9 at the correlation circuit 4 consists essentially of two components, the adapted radio signal for elimination is supplied to it at 10.
  • the entertainment signal can be used as a calibration signal or an uncorrelated signal which is mixed into the entertainment signal. It can be added to the entertainment signal additively or multiplicatively. The entertainment signal can be completely or partially masked by the entertainment signal. A Dirac shock can also be used as a calibration signal be used. In addition, the entertainment signal can also be a special piece of music that is played via the car radio or via the cassette recorder or via a CD player or a memory chip.
  • the loudspeakers or microphones instead of the loudspeakers or microphones, other types of actuators or sensors can be used.
  • the radio signal instead of the radio signal, another noise or a different sound can be used to mask the calibration signal, which due to its properties is perceived as less disturbing than the calibration signal.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
EP92107482A 1991-05-08 1992-05-02 Dispositif actif d'atténuation du bruit utilisant des signaux radio pour le cycle de calibration Expired - Lifetime EP0512445B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4115009A DE4115009A1 (de) 1991-05-08 1991-05-08 Benutzung des radiosignals beim kalibrierzyklus eines aktiven geraeuschminderungssystems
DE4115009 1991-05-08

Publications (3)

Publication Number Publication Date
EP0512445A2 true EP0512445A2 (fr) 1992-11-11
EP0512445A3 EP0512445A3 (en) 1993-09-01
EP0512445B1 EP0512445B1 (fr) 1998-04-15

Family

ID=6431233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107482A Expired - Lifetime EP0512445B1 (fr) 1991-05-08 1992-05-02 Dispositif actif d'atténuation du bruit utilisant des signaux radio pour le cycle de calibration

Country Status (2)

Country Link
EP (1) EP0512445B1 (fr)
DE (2) DE4115009A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017512A1 (fr) * 1993-01-28 1994-08-04 The Secretary Of State For Defence Casque anti-bruit equipe d'un systeme de regulation du bruit active
WO1994024662A1 (fr) * 1993-04-21 1994-10-27 Sri International Methode de calcul de la ponderation de filtres pour systemes de neutralisation des ondes de pression
WO1994029848A1 (fr) * 1993-06-11 1994-12-22 Caterpillar Inc. Modelage de la fonction 'pertes sur le signal d'ecoute' dans la suppression active du bruit
FR2771541A1 (fr) * 1997-11-21 1999-05-28 Jean Claude Decaux Procede et dispositif d'insonorisation active
EP1770685A1 (fr) 2005-10-03 2007-04-04 Maysound ApS Système de réduction de la perception audible du bruit de fond pour un être-humain.
EP1357540A3 (fr) * 2002-04-22 2009-04-01 Siemens VDO Automotive Inc. Calibration d'un microphone pour un système actif de suppresion du bruit
DE102015214134A1 (de) * 2015-07-27 2017-02-02 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Regelungsvorrichtung zur aktiven Schallunterdrückung in einem Kraftfahrzeug
DE102016001593A1 (de) * 2016-02-11 2017-08-17 Audi Ag Verfahren zum Erzeugen eines Gegenschalls für eine Geräuschminderung in einem Kraftfahrzeug

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3410129B2 (ja) * 1992-12-25 2003-05-26 富士重工業株式会社 車室内騒音低減装置
DE4315000A1 (de) * 1993-05-06 1994-11-10 Opel Adam Ag Geräuschkompensierte Freisprechanlage in Kraftfahrzeugen
DE19639216A1 (de) * 1996-09-25 1998-03-26 Thomson Brandt Gmbh Wiedergabe- oder Aufzeichnungsgerät zum Lesen oder Bespielen eines optischen Aufzeichnungsträgers mit einer Schaltung zum Unterdrücken von Jaulgeräuschen sowie Verfahren dazu
ID19364A (id) * 1996-09-25 1998-07-02 Thomson Brandt Gmbh Mereproduksi atau alat perekaman untuk mereproduksi, atau perekam, suatu medium perekam optikal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO1990003026A1 (fr) * 1988-09-06 1990-03-22 Topexpress Limited Reduction de bruit dans des cabines de vehicules
WO1990009655A1 (fr) * 1989-02-13 1990-08-23 Group Lotus Plc Suppression du bruit dans des vehicules
WO1990013109A1 (fr) * 1989-04-20 1990-11-01 Group Lotus Plc Synthetiseur de son pour vehicule
EP0461801A2 (fr) * 1990-06-11 1991-12-18 Matsushita Electric Industrial Co., Ltd. Circuit de suppression de bruit pour équipement audio

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO1990003026A1 (fr) * 1988-09-06 1990-03-22 Topexpress Limited Reduction de bruit dans des cabines de vehicules
WO1990009655A1 (fr) * 1989-02-13 1990-08-23 Group Lotus Plc Suppression du bruit dans des vehicules
WO1990013109A1 (fr) * 1989-04-20 1990-11-01 Group Lotus Plc Synthetiseur de son pour vehicule
EP0461801A2 (fr) * 1990-06-11 1991-12-18 Matsushita Electric Industrial Co., Ltd. Circuit de suppression de bruit pour équipement audio

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994017512A1 (fr) * 1993-01-28 1994-08-04 The Secretary Of State For Defence Casque anti-bruit equipe d'un systeme de regulation du bruit active
WO1994024662A1 (fr) * 1993-04-21 1994-10-27 Sri International Methode de calcul de la ponderation de filtres pour systemes de neutralisation des ondes de pression
WO1994029848A1 (fr) * 1993-06-11 1994-12-22 Caterpillar Inc. Modelage de la fonction 'pertes sur le signal d'ecoute' dans la suppression active du bruit
FR2771541A1 (fr) * 1997-11-21 1999-05-28 Jean Claude Decaux Procede et dispositif d'insonorisation active
WO1999027520A1 (fr) * 1997-11-21 1999-06-03 Decaux Jean Claude Procede et dispositif d'insonorisation active
EP1357540A3 (fr) * 2002-04-22 2009-04-01 Siemens VDO Automotive Inc. Calibration d'un microphone pour un système actif de suppresion du bruit
EP1770685A1 (fr) 2005-10-03 2007-04-04 Maysound ApS Système de réduction de la perception audible du bruit de fond pour un être-humain.
WO2007038922A1 (fr) * 2005-10-03 2007-04-12 Maysound Aps Systeme assurant une reduction de la perception de bruit audible pour un utilisateur humain
DE102015214134A1 (de) * 2015-07-27 2017-02-02 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Regelungsvorrichtung zur aktiven Schallunterdrückung in einem Kraftfahrzeug
DE102016001593A1 (de) * 2016-02-11 2017-08-17 Audi Ag Verfahren zum Erzeugen eines Gegenschalls für eine Geräuschminderung in einem Kraftfahrzeug

Also Published As

Publication number Publication date
EP0512445B1 (fr) 1998-04-15
DE59209279D1 (de) 1998-05-20
EP0512445A3 (en) 1993-09-01
DE4115009A1 (de) 1992-11-12

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