DE69627725T2 - Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle - Google Patents

Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle

Info

Publication number
DE69627725T2
DE69627725T2 DE69627725T DE69627725T DE69627725T2 DE 69627725 T2 DE69627725 T2 DE 69627725T2 DE 69627725 T DE69627725 T DE 69627725T DE 69627725 T DE69627725 T DE 69627725T DE 69627725 T2 DE69627725 T2 DE 69627725T2
Authority
DE
Germany
Prior art keywords
active noise
noise control
feedforward system
digital feedforward
digital
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
DE69627725T
Other languages
English (en)
Other versions
DE69627725D1 (de
Inventor
Anthony J Brammer
Jianhua Pan
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
Application granted granted Critical
Publication of DE69627725D1 publication Critical patent/DE69627725D1/de
Publication of DE69627725T2 publication Critical patent/DE69627725T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • 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
    • G10K11/1785—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
    • G10K2210/3012—Algorithms
    • 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
    • G10K2210/3017—Copy, i.e. whereby an estimated transfer function in one functional block is copied to another block
    • 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
    • G10K2210/3028—Filtering, e.g. Kalman filters or special analogue or digital filters
    • 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
    • G10K2210/3051—Sampling, e.g. variable rate, synchronous, decimated or interpolated
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083—Reduction of ambient noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/01—Hearing devices using active noise cancellation
DE69627725T 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle Expired - Fee Related DE69627725T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83495P 1995-07-03 1995-07-03

Publications (2)

Publication Number Publication Date
DE69627725D1 DE69627725D1 (de) 2003-05-28
DE69627725T2 true DE69627725T2 (de) 2003-12-18

Family

ID=21693206

Family Applications (3)

Application Number Title Priority Date Filing Date
DE69627395T Expired - Fee Related DE69627395T2 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle
DE69616553T Expired - Fee Related DE69616553T2 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes system für aktive lärmkontrolle
DE69627725T Expired - Fee Related DE69627725T2 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle

Family Applications Before (2)

Application Number Title Priority Date Filing Date
DE69627395T Expired - Fee Related DE69627395T2 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle
DE69616553T Expired - Fee Related DE69616553T2 (de) 1995-07-03 1996-07-02 Digitales vorwärtsgeregeltes system für aktive lärmkontrolle

Country Status (4)

Country Link
US (1) US5852667A (de)
EP (1) EP0836736B1 (de)
DE (3) DE69627395T2 (de)
WO (1) WO1997002559A1 (de)

Families Citing this family (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6850252B1 (en) 1999-10-05 2005-02-01 Steven M. Hoffberg Intelligent electronic appliance system and method
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
US6418227B1 (en) * 1996-12-17 2002-07-09 Texas Instruments Incorporated Active noise control system and method for on-line feedback path modeling
US6078672A (en) * 1997-05-06 2000-06-20 Virginia Tech Intellectual Properties, Inc. Adaptive personal active noise system
FI973455A (fi) * 1997-08-22 1999-02-23 Nokia Mobile Phones Ltd Menetelmä ja järjestely melun vaimentamiseksi tilassa muodostamalla vastamelua
US6396930B1 (en) * 1998-02-20 2002-05-28 Michael Allen Vaudrey Active noise reduction for audiometry
US6606641B1 (en) * 1998-04-20 2003-08-12 Koninklijke Philips Electronics N.V. System for varying the dynamic range of coefficients in a digital filter
EP1118248B1 (de) * 1998-09-29 2005-03-23 Siemens Audiologische Technik GmbH Hörgerät und verfahren zum verarbeiten von mikrofonsignalen in einem hörgerät
GB2360165A (en) * 2000-03-07 2001-09-12 Central Research Lab Ltd A method of improving the audibility of sound from a loudspeaker located close to an ear
EP1150539A1 (de) * 2000-04-28 2001-10-31 Silicomp SPA Steuerungseinrichtung für eine Fernsprechteilnehmerstation und Kopfhörer zur Verwendung in der genannten Fernsprechteilnehmerstation
EP1170976A1 (de) * 2000-07-03 2002-01-09 AeroCom ApS Kommunicationssystem bei Umgebungsgeräuschen
KR100952400B1 (ko) * 2001-10-03 2010-04-14 코닌클리케 필립스 일렉트로닉스 엔.브이. 원하지 않는 라우드 스피커 신호들을 제거하는 방법
DE10229154A1 (de) * 2002-06-28 2004-01-15 Voith Paper Patent Gmbh Saugwalze
DE10301384A1 (de) * 2003-01-16 2004-08-26 Glasa, Hans-Jürgen, Dipl.-Ing. Schießanlage, insbesondere Wurfscheibenschießanlage
EP1475996B1 (de) * 2003-05-06 2009-04-08 Harman Becker Automotive Systems GmbH Verarbeitungssystem für Stereo Audiosignale
US6971944B2 (en) * 2004-02-17 2005-12-06 Lsi Logic Corporation Method and control system for improving CMP process by detecting and reacting to harmonic oscillation
US7308106B2 (en) * 2004-05-17 2007-12-11 Adaptive Technologies, Inc. System and method for optimized active controller design in an ANR system
CN2744105Y (zh) * 2004-08-17 2005-11-30 黄大伟 一种低成本且高效率的抗噪耳机及配套装置
EP1722360B1 (de) * 2005-05-13 2014-03-19 Harman Becker Automotive Systems GmbH System und Verfahren zur Verbesserung eines Audiosignals
US20060264190A1 (en) * 2005-05-23 2006-11-23 Boris Aleiner System and method for linearizing nonlinear power amplifiers
US7269039B2 (en) * 2005-08-19 2007-09-11 Honeywell International Inc. Method and device for producing rectifier gating signals using feed forward control
WO2007036443A1 (de) * 2005-09-27 2007-04-05 Anocsys Ag Verfahren zur aktiven geräuschverminderung und eine vorrichtung zur durchführung des verfahrens
GB2437772B8 (en) 2006-04-12 2008-09-17 Wolfson Microelectronics Plc Digital circuit arrangements for ambient noise-reduction.
JP5194434B2 (ja) * 2006-11-07 2013-05-08 ソニー株式会社 ノイズキャンセリングシステムおよびノイズキャンセル方法
JP5352952B2 (ja) * 2006-11-07 2013-11-27 ソニー株式会社 デジタルフィルタ回路、デジタルフィルタプログラムおよびノイズキャンセリングシステム
DE102006053855B4 (de) * 2006-11-14 2008-11-06 Benteler Automobiltechnik Gmbh Aktiver Druckwellenüberlagerer und Verfahren zur aktiven Überlagerung von Druckwellen
TWI310177B (en) * 2006-12-29 2009-05-21 Ind Tech Res Inst Noise canceling device and method thereof
GB2441835B (en) * 2007-02-07 2008-08-20 Sonaptic Ltd Ambient noise reduction system
GB2454605B (en) * 2007-02-16 2010-05-26 Wolfson Microelectronics Plc Ear-worn speaker-carrying devices
GB2446982B (en) * 2007-02-16 2009-04-29 Wolfson Microelectronics Plc Ear-worn speaker-carrying devices
US8094046B2 (en) * 2007-03-02 2012-01-10 Sony Corporation Signal processing apparatus and signal processing method
US8497928B2 (en) * 2007-07-31 2013-07-30 Palm, Inc. Techniques to automatically focus a digital camera
US20090136052A1 (en) * 2007-11-27 2009-05-28 David Clark Company Incorporated Active Noise Cancellation Using a Predictive Approach
GB0725111D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
GB0725108D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Slow rate adaption
JP4631939B2 (ja) * 2008-06-27 2011-02-16 ソニー株式会社 ノイズ低減音声再生装置およびノイズ低減音声再生方法
US8135140B2 (en) * 2008-11-20 2012-03-13 Harman International Industries, Incorporated System for active noise control with audio signal compensation
DE102009005302B4 (de) * 2009-01-16 2022-01-05 Sennheiser Electronic Gmbh & Co. Kg Schutzhelm und Vorrichtung zur aktiven Störschallunterdrückung
US8345888B2 (en) * 2009-04-28 2013-01-01 Bose Corporation Digital high frequency phase compensation
US8085946B2 (en) * 2009-04-28 2011-12-27 Bose Corporation ANR analysis side-chain data support
US8737636B2 (en) 2009-07-10 2014-05-27 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
EP2337020A1 (de) * 2009-12-18 2011-06-22 Nxp B.V. Vorrichtung und Verfahren zur Verarbeitung von akustischen Signalen
WO2011159858A1 (en) 2010-06-17 2011-12-22 Dolby Laboratories Licensing Corporation Method and apparatus for reducing the effect of environmental noise on listeners
US8908877B2 (en) 2010-12-03 2014-12-09 Cirrus Logic, Inc. Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
CN103270552B (zh) 2010-12-03 2016-06-22 美国思睿逻辑有限公司 在个人语音装置中的适应性噪音消除器的监督控制
GB201021912D0 (en) * 2010-12-23 2011-02-02 Soundchip Sa Noise Reducing Earphone
US8718291B2 (en) * 2011-01-05 2014-05-06 Cambridge Silicon Radio Limited ANC for BT headphones
US8693700B2 (en) 2011-03-31 2014-04-08 Bose Corporation Adaptive feed-forward noise reduction
US8948407B2 (en) * 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US9824677B2 (en) 2011-06-03 2017-11-21 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
GB2492983B (en) * 2011-07-18 2013-09-18 Incus Lab Ltd Digital noise-cancellation
US9325821B1 (en) 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
US10966014B2 (en) * 2011-10-07 2021-03-30 Texas Instruments Incorporated Method and system for hybrid noise cancellation
US9319781B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Frequency and direction-dependent ambient sound handling in personal audio devices having adaptive noise cancellation (ANC)
US9123321B2 (en) 2012-05-10 2015-09-01 Cirrus Logic, Inc. Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
US9318090B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US9369798B1 (en) 2013-03-12 2016-06-14 Cirrus Logic, Inc. Internal dynamic range control in an adaptive noise cancellation (ANC) system
US9414150B2 (en) 2013-03-14 2016-08-09 Cirrus Logic, Inc. Low-latency multi-driver adaptive noise canceling (ANC) system for a personal audio device
US9324311B1 (en) 2013-03-15 2016-04-26 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in a personal audio device
US9578432B1 (en) 2013-04-24 2017-02-21 Cirrus Logic, Inc. Metric and tool to evaluate secondary path design in adaptive noise cancellation systems
US9107011B2 (en) * 2013-07-03 2015-08-11 Sonetics Holdings, Inc. Headset with fit detection system
US9369557B2 (en) 2014-03-05 2016-06-14 Cirrus Logic, Inc. Frequency-dependent sidetone calibration
US9319784B2 (en) 2014-04-14 2016-04-19 Cirrus Logic, Inc. Frequency-shaped noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
KR20180044324A (ko) 2015-08-20 2018-05-02 시러스 로직 인터내셔널 세미컨덕터 리미티드 피드백 적응적 잡음 소거(anc) 제어기 및 고정 응답 필터에 의해 부분적으로 제공되는 피드백 응답을 갖는 방법
US10235987B1 (en) * 2018-02-23 2019-03-19 GM Global Technology Operations LLC Method and apparatus that cancel component noise using feedforward information
KR102640259B1 (ko) * 2018-02-27 2024-02-27 하만 베커 오토모티브 시스템즈 게엠베하 피드포워드 능동 노이즈 제어
US10636408B2 (en) 2018-09-28 2020-04-28 The Boeing Company Headrest-integrated active noise control
US10672377B2 (en) * 2018-09-28 2020-06-02 The Boeing Company Feedback-based correction of a control signal in an active noise control system
US10777184B2 (en) 2018-09-28 2020-09-15 The Boeing Company Correction of a control signal in an active noise control headrest
DK3681175T3 (da) * 2019-01-09 2022-07-04 Oticon As Høreanordning med direkte lydkompensation
US11462204B2 (en) * 2020-09-08 2022-10-04 Siemens Gamesa Renewable Energy A/S Wind turbine and method for noise reduction for a wind turbine
TWI740783B (zh) * 2021-02-24 2021-09-21 中原大學 具類比濾波器之前饋式主動噪音控制系統的設計方法

Family Cites Families (9)

* 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
FR2662265A1 (fr) * 1990-05-18 1991-11-22 Philips Electronique Lab Dispositif eliminateur d'echos fixes pour echographe ultrasonore.
US5117401A (en) * 1990-08-16 1992-05-26 Hughes Aircraft Company Active adaptive noise canceller without training mode
US5267320A (en) * 1991-03-12 1993-11-30 Ricoh Company, Ltd. Noise controller which noise-controls movable point
JP3471370B2 (ja) * 1991-07-05 2003-12-02 本田技研工業株式会社 能動振動制御装置
US5311453A (en) * 1992-09-11 1994-05-10 Noise Cancellation Technologies, Inc. Variable point sampling
JP3419866B2 (ja) * 1993-12-28 2003-06-23 富士重工業株式会社 騒音低減装置
US5548543A (en) * 1994-12-08 1996-08-20 Stanford University Computationally efficient linear-phase finite impulse response filter

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US5852667A (en) 1998-12-22
DE69616553T2 (de) 2002-07-11
WO1997002559A1 (en) 1997-01-23
DE69616553D1 (de) 2001-12-06
DE69627395D1 (de) 2003-05-15
DE69627725D1 (de) 2003-05-28
EP0836736A1 (de) 1998-04-22
EP0836736B1 (de) 2001-10-31
DE69627395T2 (de) 2004-02-05

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