EP1074971A3 - Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle - Google Patents

Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle Download PDF

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Publication number
EP1074971A3
EP1074971A3 EP00122368A EP00122368A EP1074971A3 EP 1074971 A3 EP1074971 A3 EP 1074971A3 EP 00122368 A EP00122368 A EP 00122368A EP 00122368 A EP00122368 A EP 00122368A EP 1074971 A3 EP1074971 A3 EP 1074971A3
Authority
EP
European Patent Office
Prior art keywords
signal
antinoise
acoustic
noise
control system
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
EP00122368A
Other languages
English (en)
French (fr)
Other versions
EP1074971B1 (de
EP1074971A2 (de
Inventor
Jianhua Pan
Anthony J. Brammer
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.)
National Research Council of Canada
Original Assignee
National Research Council of Canada
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 National Research Council of Canada filed Critical National Research Council of Canada
Priority claimed from EP96920661A external-priority patent/EP0836736B1/de
Publication of EP1074971A2 publication Critical patent/EP1074971A2/de
Publication of EP1074971A3 publication Critical patent/EP1074971A3/de
Application granted granted Critical
Publication of EP1074971B1 publication Critical patent/EP1074971B1/de
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
    • G10K11/1781—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
    • G10K11/17825—Error signals
    • 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
    • G10K11/1781—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
    • G10K11/17853—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
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • 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
    • G10K2210/3027—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
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3053—Speeding up computation or convergence, or decreasing the computational load
    • 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
    • G10K2210/3213—Automatic gain control [AGC]

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP00122368A 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle Expired - Lifetime EP1074971B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US83495P 1995-07-03 1995-07-03
US834P 1995-07-03
EP96920661A EP0836736B1 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes system für aktive lärmkontrolle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP96920661A Division EP0836736B1 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes system für aktive lärmkontrolle

Publications (3)

Publication Number Publication Date
EP1074971A2 EP1074971A2 (de) 2001-02-07
EP1074971A3 true EP1074971A3 (de) 2001-05-09
EP1074971B1 EP1074971B1 (de) 2003-04-09

Family

ID=26144773

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00122367A Expired - Lifetime EP1074970B1 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle
EP00122368A Expired - Lifetime EP1074971B1 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00122367A Expired - Lifetime EP1074970B1 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle

Country Status (1)

Country Link
EP (2) EP1074970B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2446966B (en) 2006-04-12 2010-07-07 Wolfson Microelectronics Plc Digital circuit arrangements for ambient noise-reduction
GB2465681B (en) * 2006-04-12 2010-12-15 Wolfson Microelectronics Plc Digital circuit arrangements for ambient noise-reduction
JP2008122729A (ja) 2006-11-14 2008-05-29 Sony Corp ノイズ低減装置、ノイズ低減方法、ノイズ低減プログラムおよびノイズ低減音声出力装置
GB2441835B (en) * 2007-02-07 2008-08-20 Sonaptic Ltd Ambient noise reduction system
US8737636B2 (en) 2009-07-10 2014-05-27 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
US9082389B2 (en) * 2012-03-30 2015-07-14 Apple Inc. Pre-shaping series filter for active noise cancellation adaptive filter
GB2582373B (en) 2019-03-22 2021-08-11 Dyson Technology Ltd Noise control
GB2582374B (en) * 2019-03-22 2021-08-18 Dyson Technology Ltd Noise control
CN113421540B (zh) * 2021-07-26 2023-10-31 北京安声浩朗科技有限公司 主动降噪方法、主动降噪装置及半入耳式主动降噪耳机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471290A2 (de) * 1990-08-16 1992-02-19 Hughes Aircraft Company Adaptiver aktiver Lärmdämpfer ohne Übungsmodus
US5267320A (en) * 1991-03-12 1993-11-30 Ricoh Company, Ltd. Noise controller which noise-controls movable point
US5311453A (en) * 1992-09-11 1994-05-10 Noise Cancellation Technologies, Inc. Variable point sampling
US5410605A (en) * 1991-07-05 1995-04-25 Honda Giken Kogyo Kabushiki Kaisha Active vibration control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8504541D0 (en) * 1985-02-21 1985-03-27 Plessey Co Plc Noise reduction arrangements
JP2598483B2 (ja) * 1988-09-05 1997-04-09 日立プラント建設株式会社 電子消音システム
US5548543A (en) * 1994-12-08 1996-08-20 Stanford University Computationally efficient linear-phase finite impulse response filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471290A2 (de) * 1990-08-16 1992-02-19 Hughes Aircraft Company Adaptiver aktiver Lärmdämpfer ohne Übungsmodus
US5267320A (en) * 1991-03-12 1993-11-30 Ricoh Company, Ltd. Noise controller which noise-controls movable point
US5410605A (en) * 1991-07-05 1995-04-25 Honda Giken Kogyo Kabushiki Kaisha Active vibration control system
US5311453A (en) * 1992-09-11 1994-05-10 Noise Cancellation Technologies, Inc. Variable point sampling

Also Published As

Publication number Publication date
EP1074971B1 (de) 2003-04-09
EP1074970B1 (de) 2003-04-23
EP1074970A2 (de) 2001-02-07
EP1074970A3 (de) 2001-05-09
EP1074971A2 (de) 2001-02-07

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