DE69128221T2 - Akustische adaptive Vorrichtung zur Löschung von Geräuschsignalen. - Google Patents

Akustische adaptive Vorrichtung zur Löschung von Geräuschsignalen.

Info

Publication number
DE69128221T2
DE69128221T2 DE69128221T DE69128221T DE69128221T2 DE 69128221 T2 DE69128221 T2 DE 69128221T2 DE 69128221 T DE69128221 T DE 69128221T DE 69128221 T DE69128221 T DE 69128221T DE 69128221 T2 DE69128221 T2 DE 69128221T2
Authority
DE
Germany
Prior art keywords
noise signals
adaptive device
canceling noise
acoustic adaptive
acoustic
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 - Lifetime
Application number
DE69128221T
Other languages
English (en)
Other versions
DE69128221D1 (de
Inventor
Paul L Feintuch
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.)
Raytheon Co
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of DE69128221D1 publication Critical patent/DE69128221D1/de
Application granted granted Critical
Publication of DE69128221T2 publication Critical patent/DE69128221T2/de
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
    • G10K11/1781—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
    • G10K11/17879—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
    • G10K2210/30—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
    • G10K2210/301—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
    • G10K2210/50—Miscellaneous
    • G10K2210/503—Diagnostics; Stability; Alarms; Failsafe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/901—Noise or unwanted signal reduction in nonseismic receiving system

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Filters That Use Time-Delay Elements (AREA)
DE69128221T 1990-08-16 1991-08-07 Akustische adaptive Vorrichtung zur Löschung von Geräuschsignalen. Expired - Lifetime DE69128221T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/568,289 US5117401A (en) 1990-08-16 1990-08-16 Active adaptive noise canceller without training mode

Publications (2)

Publication Number Publication Date
DE69128221D1 DE69128221D1 (de) 1998-01-02
DE69128221T2 true DE69128221T2 (de) 1998-03-12

Family

ID=24270691

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69128221T Expired - Lifetime DE69128221T2 (de) 1990-08-16 1991-08-07 Akustische adaptive Vorrichtung zur Löschung von Geräuschsignalen.

Country Status (5)

Country Link
US (1) US5117401A (de)
EP (1) EP0471290B1 (de)
JP (1) JP2618121B2 (de)
CA (1) CA2047524C (de)
DE (1) DE69128221T2 (de)

Families Citing this family (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3094517B2 (ja) * 1991-06-28 2000-10-03 日産自動車株式会社 能動型騒音制御装置
JPH0519776A (ja) * 1991-07-09 1993-01-29 Honda Motor Co Ltd 能動振動制御装置
JP2876874B2 (ja) * 1992-03-04 1999-03-31 日産自動車株式会社 車両用能動型騒音制御装置
WO1994001810A1 (en) * 1992-07-14 1994-01-20 Noise Cancellation Technologies, Inc. Low cost controller
JP2924496B2 (ja) * 1992-09-30 1999-07-26 松下電器産業株式会社 騒音制御装置
FR2699347B1 (fr) * 1992-12-14 1995-02-10 Commissariat Energie Atomique Procédé et dispositif d'extraction d'un signal utile d'extension spatiale finie à chaque instant et variable avec le temps.
US5388080A (en) * 1993-04-27 1995-02-07 Hughes Aircraft Company Non-integer sample delay active noise canceller
US5425105A (en) * 1993-04-27 1995-06-13 Hughes Aircraft Company Multiple adaptive filter active noise canceller
US5602765A (en) * 1993-07-27 1997-02-11 Nippon Telegraph And Telephone Corporation Adaptive transfer function estimating method and estimating device using the same
US5649015A (en) * 1993-08-24 1997-07-15 Midnite Kitty, Inc. Speaker simulator
WO1995008155A1 (en) * 1993-09-17 1995-03-23 Noise Cancellation Technologies, Inc. Causal modeling of predictable impulse noise
NL9302076A (nl) * 1993-11-30 1995-06-16 Tno Systeem voor het genereren van een tijdvariant signaal ter onderdrukking van een primair signaal met minimalisatie van een predictiefout.
US5596650A (en) * 1994-04-29 1997-01-21 Audio Products International Corp. Equalizing circuit for a loudspeaker system
US5586190A (en) * 1994-06-23 1996-12-17 Digisonix, Inc. Active adaptive control system with weight update selective leakage
US5748752A (en) * 1994-12-23 1998-05-05 Reames; James B. Adaptive voice enhancing system
EP1074970B1 (de) * 1995-07-03 2003-04-23 National Research Council Of Canada Digitales vorwärtsgeregeltes System für aktive Lärmkontrolle
US5852667A (en) * 1995-07-03 1998-12-22 Pan; Jianhua Digital feed-forward active noise control system
US5715320A (en) * 1995-08-21 1998-02-03 Digisonix, Inc. Active adaptive selective control system
US5631877A (en) * 1996-01-11 1997-05-20 The United States Of America As Represented By The Secretary Of The Navy Narrowband signal revealer
US5737433A (en) * 1996-01-16 1998-04-07 Gardner; William A. Sound environment control apparatus
US5999567A (en) * 1996-10-31 1999-12-07 Motorola, Inc. Method for recovering a source signal from a composite signal and apparatus therefor
US7853024B2 (en) 1997-08-14 2010-12-14 Silentium Ltd. Active noise control system and method
IL121555A (en) * 1997-08-14 2008-07-08 Silentium Ltd Active acoustic noise reduction system
DE19743376A1 (de) * 1997-09-30 1999-04-22 Siemens Ag Schallwellentherapieeinrichtung
US6341101B1 (en) * 2000-03-27 2002-01-22 The United States Of America As Represented By The Secretary Of The Navy Launchable countermeasure device and method
US20040125962A1 (en) * 2000-04-14 2004-07-01 Markus Christoph Method and apparatus for dynamic sound optimization
DE10018666A1 (de) 2000-04-14 2001-10-18 Harman Audio Electronic Sys Vorrichtung und Verfahren zum geräuschabhängigen Anpassen eines akustischen Nutzsignals
US20020136415A1 (en) * 2001-03-20 2002-09-26 Siemens Vdo Automotive, Inc. Active noise cancellation for a vehicle induction system with selectable modelling noise
US6978010B1 (en) * 2002-03-21 2005-12-20 Bellsouth Intellectual Property Corp. Ambient noise cancellation for voice communication device
KR101121764B1 (ko) * 2003-09-17 2012-03-23 사일런티움 리미티드 능동형 잡음 제어 시스템 및 방법
EP1580882B1 (de) * 2004-03-19 2007-01-10 Harman Becker Automotive Systems GmbH System und Verfahren zur Verbesserung eines Audiosignals
EP1619793B1 (de) * 2004-07-20 2015-06-17 Harman Becker Automotive Systems GmbH Audioverbesserungssystem und -verfahren
US7536301B2 (en) * 2005-01-03 2009-05-19 Aai Corporation System and method for implementing real-time adaptive threshold triggering in acoustic detection systems
US8170221B2 (en) * 2005-03-21 2012-05-01 Harman Becker Automotive Systems Gmbh Audio enhancement system and method
EP1720249B1 (de) 2005-05-04 2009-07-15 Harman Becker Automotive Systems GmbH System und Verfahren zur Intensivierung von Audiosignalen
US7876845B2 (en) * 2005-06-22 2011-01-25 Eices Research, Inc. Wireless communications systems and/or methods providing low interference, high privacy and/or cognitive flexibility
US8233554B2 (en) 2010-03-29 2012-07-31 Eices Research, Inc. Increased capacity communications for OFDM-based wireless communications systems/methods/devices
US8670493B2 (en) 2005-06-22 2014-03-11 Eices Research, Inc. Systems and/or methods of increased privacy wireless communications
USRE47633E1 (en) 2005-06-22 2019-10-01 Odyssey Wireless Inc. Systems/methods of conducting a financial transaction using a smartphone
WO2007001707A2 (en) * 2005-06-22 2007-01-04 Eices Research, Inc. Systems, methods, devices and/or computer program products for providing communications devoid of cyclostationary features
US20080310650A1 (en) * 2005-07-21 2008-12-18 Matsushita Electric Industrial Co., Ltd. Active noise reducing device
EP1941492A1 (de) * 2005-10-25 2008-07-09 Anocsys AG Verfahren zum schätzen eines nutzsignals mit hilfe eines adaptiven prozesses
WO2007063467A2 (en) * 2005-11-30 2007-06-07 Koninklijke Philips Electronics N.V. Noise reduction system and method
WO2008006404A2 (de) * 2006-07-13 2008-01-17 Anocsys Ag Verfahren zum betrieb eines aktiven geräuschreduktionssystems
US8811118B2 (en) * 2006-09-22 2014-08-19 Baker Hughes Incorporated Downhole noise cancellation in mud-pulse telemetry
US8855329B2 (en) * 2007-01-22 2014-10-07 Silentium Ltd. Quiet fan incorporating active noise control (ANC)
US20080187147A1 (en) * 2007-02-05 2008-08-07 Berner Miranda S Noise reduction systems and methods
EP2133866B1 (de) * 2008-06-13 2016-02-17 Harman Becker Automotive Systems GmbH Adaptives Geräuschdämpfungssystem
US9374746B1 (en) 2008-07-07 2016-06-21 Odyssey Wireless, Inc. Systems/methods of spatial multiplexing
US8538008B2 (en) * 2008-11-21 2013-09-17 Acoustic Technologies, Inc. Acoustic echo canceler using an accelerometer
DE102009056784A1 (de) 2009-12-03 2011-06-09 Conti Temic Microelectronic Gmbh Verfahren und Vorrichtung zum Betrieb eines Elektromotors
JP5412574B2 (ja) * 2010-03-05 2014-02-12 パイオニア株式会社 Ｆｍ受信装置及びフィルタリング処理方法
US9806790B2 (en) 2010-03-29 2017-10-31 Odyssey Wireless, Inc. Systems/methods of spectrally efficient communications
US8559485B2 (en) 2010-04-08 2013-10-15 Andrew Llc Autoregressive signal processing for repeater echo cancellation
WO2012074403A2 (en) * 2010-12-01 2012-06-07 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Active noise reducing filter apparatus, and a method of manufacturing such an apparatus
KR101909432B1 (ko) 2010-12-03 2018-10-18 씨러스 로직 인코포레이티드 개인용 오디오 디바이스에서 적응형 잡음 제거기의 실수 제어
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
ES2834442T3 (es) 2011-05-11 2021-06-17 Silentium Ltd Sistema y método de control del ruido
US9928824B2 (en) 2011-05-11 2018-03-27 Silentium Ltd. Apparatus, system and method of controlling noise within a noise-controlled volume
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
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)
US8958571B2 (en) * 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
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
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)
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
JP5934037B2 (ja) * 2012-06-25 2016-06-15 住友理工株式会社 能動型振動騒音抑制装置
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
US9502020B1 (en) 2013-03-15 2016-11-22 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in a personal audio device
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9462376B2 (en) 2013-04-16 2016-10-04 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9478210B2 (en) 2013-04-17 2016-10-25 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9578432B1 (en) 2013-04-24 2017-02-21 Cirrus Logic, Inc. Metric and tool to evaluate secondary path design in adaptive noise cancellation systems
US9666176B2 (en) 2013-09-13 2017-05-30 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
US9620101B1 (en) 2013-10-08 2017-04-11 Cirrus Logic, Inc. Systems and methods for maintaining playback fidelity in an audio system with adaptive noise cancellation
US10219071B2 (en) 2013-12-10 2019-02-26 Cirrus Logic, Inc. Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
US9704472B2 (en) 2013-12-10 2017-07-11 Cirrus Logic, Inc. Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system
US9369557B2 (en) 2014-03-05 2016-06-14 Cirrus Logic, Inc. Frequency-dependent sidetone calibration
US10181315B2 (en) * 2014-06-13 2019-01-15 Cirrus Logic, Inc. Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
US9552805B2 (en) 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
JP6964581B2 (ja) 2015-08-20 2021-11-10 シーラス ロジック インターナショナル セミコンダクター リミテッド 固定応答フィルタによって部分的に提供されるフィードバック応答を有するフィードバック適応雑音消去（ａｎｃ）コントローラおよび方法
US9578415B1 (en) 2015-08-21 2017-02-21 Cirrus Logic, Inc. Hybrid adaptive noise cancellation system with filtered error microphone signal
US10013966B2 (en) 2016-03-15 2018-07-03 Cirrus Logic, Inc. Systems and methods for adaptive active noise cancellation for multiple-driver personal audio device
US11238879B2 (en) 2017-11-02 2022-02-01 Microsemi Semiconductor (U.S.) Inc. Acoustic delay measurement using adaptive filter with programmable delay buffer
CN111771239B (zh) * 2018-02-27 2024-07-02 哈曼贝克自动***股份有限公司 前馈有源噪声控制
US10565979B1 (en) * 2018-10-16 2020-02-18 Harman International Industries, Incorporated Concurrent noise cancelation systems with harmonic filtering
KR20210110596A (ko) * 2019-01-04 2021-09-08 하만인터내셔날인더스트리스인코포레이티드 고주파수 광대역 공기 전달 잡음 능동 잡음 소거
KR102364070B1 (ko) * 2020-02-25 2022-02-18 충남대학교산학협력단 피드백 및 피드포워드 통합 능동소음제어의 주파수 영역 안정화 방법 및 시스템
KR102560155B1 (ko) * 2021-01-05 2023-07-25 포항공과대학교 산학협력단 능동 노이즈 제어 장치 및 그를 위한 가상 에러 신호의 생성 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4677677A (en) * 1985-09-19 1987-06-30 Nelson Industries Inc. Active sound attenuation system with on-line adaptive feedback cancellation
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
US4736431A (en) * 1986-10-23 1988-04-05 Nelson Industries, Inc. Active attenuation system with increased dynamic range
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
US5251262A (en) * 1990-06-29 1993-10-05 Kabushiki Kaisha Toshiba Adaptive active noise cancellation apparatus

Also Published As

Publication number Publication date
JPH04254894A (ja) 1992-09-10
CA2047524A1 (en) 1992-02-17
US5117401A (en) 1992-05-26
CA2047524C (en) 1994-11-01
JP2618121B2 (ja) 1997-06-11
EP0471290B1 (de) 1997-11-19
EP0471290A3 (en) 1992-08-26
DE69128221D1 (de) 1998-01-02
EP0471290A2 (de) 1992-02-19

Similar Documents

Publication Publication Date Title
DE69128221T2 (de) Akustische adaptive Vorrichtung zur Löschung von Geräuschsignalen.
DE69131883D1 (de) Vorrichtung zur Rauschreduzierung
DE69022762D1 (de) Vorrichtung zur Lärmverminderung.
DE59105354D1 (de) Vorrichtung zur Stosswellenbehandlung.
DE69110700D1 (de) Akustischer Teilband-Echokompensator.
DE69110812D1 (de) Perinataler Puls-Aufnehmer zur Oxymetrie.
ATE303680T1 (de) Adaptives signalangepasstes filter
DE69129087T2 (de) Gerät zur wiedergabe von tonsignalen
DE69129664D1 (de) Vorrichtung zur geräuschunterdrückung
DE69319552T2 (de) Signalverarbeitung zur Geisterbildauslöschung
DE3673514D1 (de) Vorrichtung zur daempfung von getriebegeraeusch.
DE3852866D1 (de) Filterschaltung zur Geisterbildauslöschung.
DE69100625D1 (de) Akustische oberflächenwellenfilter.
DE69105154D1 (de) Sprachsignalverarbeitungsvorrichtung.
DE69517263T2 (de) Vorrichtung zur Erzeugung von Tonsignalen
DE69104551D1 (de) Vorrichtung für Lithotripsie.
DE69112708D1 (de) Vorrichtung zur Synthetisierung von Musiktönen.
DE69112855D1 (de) Sprachsignalverarbeitungsvorrichtung.
DE69631708D1 (de) Einrichtung zur Echounterdrückung
DE69229942T2 (de) Vorrichtung zur Störfrequenzunterdrückung
DE69103572D1 (de) Vorrichtung zur Wiedergabe von digitalen Signalen.
DE69120150D1 (de) Gerät zur wiedergabe von tonsignalen
DE69108303D1 (de) Vorrichtung zur Synthetisierung von Musiktönen.
DE69423449T2 (de) Vorrichtung zur Rauschverminderung
DE69227083D1 (de) Vorrichtung zur Hinzufügung von Toneffekten

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: RAYTHEON CO. (N.D.GES.D. STAATES DELAWARE), LEXING