DE69939796D1 - Lärmkontrolleanordnung - Google Patents

Lärmkontrolleanordnung

Info

Publication number
DE69939796D1
DE69939796D1 DE69939796T DE69939796T DE69939796D1 DE 69939796 D1 DE69939796 D1 DE 69939796D1 DE 69939796 T DE69939796 T DE 69939796T DE 69939796 T DE69939796 T DE 69939796T DE 69939796 D1 DE69939796 D1 DE 69939796D1
Authority
DE
Germany
Prior art keywords
control arrangement
noise control
noise
arrangement
control
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
DE69939796T
Other languages
English (en)
Inventor
Kenichi Terai
Hiroyuki Hashimoto
Isao Kakuhari
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Priority claimed from JP15877699A external-priority patent/JP3359301B2/ja
Priority claimed from JP11158775A external-priority patent/JP2000089770A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69939796D1 publication Critical patent/DE69939796D1/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
    • G10K11/17821—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
    • G10K11/1783—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G10K11/17833—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 handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels
    • 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
    • G10K2210/3012—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
    • G10K2210/3027—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
    • G10K2210/3039—Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
DE69939796T 1998-07-16 1999-07-14 Lärmkontrolleanordnung Expired - Lifetime DE69939796D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP20236398 1998-07-16
JP15877699A JP3359301B2 (ja) 1999-06-04 1999-06-04 騒音制御装置
JP11158775A JP2000089770A (ja) 1998-07-16 1999-06-04 騒音制御装置

Publications (1)

Publication Number Publication Date
DE69939796D1 true DE69939796D1 (de) 2008-12-11

Family

ID=27321400

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69939796T Expired - Lifetime DE69939796D1 (de) 1998-07-16 1999-07-14 Lärmkontrolleanordnung

Country Status (3)

Country Link
US (1) US6418228B1 (de)
EP (1) EP0973151B8 (de)
DE (1) DE69939796D1 (de)

Families Citing this family (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL121555A (en) 1997-08-14 2008-07-08 Silentium Ltd Active acoustic noise reduction system
US7853024B2 (en) 1997-08-14 2010-12-14 Silentium Ltd. Active noise control system and method
US6724706B1 (en) * 1999-02-26 2004-04-20 Matsushita Electric Industrial Co., Ltd. Digital adaptive equalizer for different quality signals
US6608904B1 (en) * 1999-06-04 2003-08-19 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for canceling interference in a loudspeaker communication path through adaptive discrimination
AU5806400A (en) * 1999-07-19 2001-02-05 Oticon A/S Feedback cancellation with low frequency input
JP3502594B2 (ja) * 2000-05-24 2004-03-02 松下電器産業株式会社 車輌用能動騒音低減装置
AU2003261203A1 (en) * 2002-07-19 2004-02-09 The Penn State Research Foundation A linear independent method for noninvasive online secondary path modeling
JP2004080210A (ja) * 2002-08-13 2004-03-11 Fujitsu Ltd デジタルフィルタ
DE60226611D1 (de) * 2002-10-21 2008-06-26 Silentium Ltd Aktivsystem zur Reduktion des akustischen Rauschens
US7613312B2 (en) * 2003-05-30 2009-11-03 Panasonic Corporation Audio processing apparatus for implementing level corrections of audio data
JP4077383B2 (ja) * 2003-09-10 2008-04-16 松下電器産業株式会社 能動型振動騒音制御装置
JP2005252933A (ja) * 2004-03-08 2005-09-15 Matsushita Electric Ind Co Ltd Ａｍラジオ受信機
EP1766261B1 (de) * 2004-06-10 2012-02-08 Lord Corporation Verfahren und system zur steuerung von helikopterschwingungen
US8267652B2 (en) 2004-08-30 2012-09-18 Lord Corporation Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations
US8162606B2 (en) 2004-08-30 2012-04-24 Lord Corporation Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations
US7448854B2 (en) 2004-08-30 2008-11-11 Lord Corporation Helicopter vibration control system and rotary force generator for canceling vibrations
US7722322B2 (en) 2004-08-30 2010-05-25 Lord Corporation Computer system and program product for controlling vibrations
US8090482B2 (en) * 2007-10-25 2012-01-03 Lord Corporation Distributed active vibration control systems and rotary wing aircraft with suppressed vibrations
JP2006270661A (ja) * 2005-03-25 2006-10-05 Yokogawa Electric Corp Σδアナログ／デジタル変換器
JP5029356B2 (ja) * 2005-07-15 2012-09-19 日本電気株式会社 適応ディジタルフィルタ、信号処理方法、ｆｍ受信機およびプログラム
WO2007013281A1 (ja) * 2005-07-27 2007-02-01 Matsushita Electric Industrial Co., Ltd. 能動型振動騒音制御装置
JP4322916B2 (ja) * 2006-12-26 2009-09-02 本田技研工業株式会社 能動型振動騒音制御装置
US8855329B2 (en) 2007-01-22 2014-10-07 Silentium Ltd. Quiet fan incorporating active noise control (ANC)
GB0725108D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Slow rate adaption
GB0725112D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Adapting cut-off frequency
GB0725111D0 (en) 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Lower rate emulation
JP4506873B2 (ja) * 2008-05-08 2010-07-21 ソニー株式会社 信号処理装置、信号処理方法
US8611553B2 (en) 2010-03-30 2013-12-17 Bose Corporation ANR instability detection
US8184822B2 (en) * 2009-04-28 2012-05-22 Bose Corporation ANR signal processing topology
US8085946B2 (en) * 2009-04-28 2011-12-27 Bose Corporation ANR analysis side-chain data support
US8472637B2 (en) 2010-03-30 2013-06-25 Bose Corporation Variable ANR transform compression
US8073151B2 (en) * 2009-04-28 2011-12-06 Bose Corporation Dynamically configurable ANR filter block topology
JP5497891B2 (ja) * 2009-04-28 2014-05-21 ボーズ・コーポレーション 音依存のａｎｒ信号処理調整
US8345888B2 (en) * 2009-04-28 2013-01-01 Bose Corporation Digital high frequency phase compensation
US8073150B2 (en) * 2009-04-28 2011-12-06 Bose Corporation Dynamically configurable ANR signal processing topology
US8315405B2 (en) * 2009-04-28 2012-11-20 Bose Corporation Coordinated ANR reference sound compression
US8165313B2 (en) * 2009-04-28 2012-04-24 Bose Corporation ANR settings triple-buffering
US8090114B2 (en) 2009-04-28 2012-01-03 Bose Corporation Convertible filter
US8532310B2 (en) 2010-03-30 2013-09-10 Bose Corporation Frequency-dependent ANR reference sound compression
US8737636B2 (en) 2009-07-10 2014-05-27 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation
US9837097B2 (en) * 2010-05-24 2017-12-05 Nec Corporation Single processing method, information processing apparatus and signal processing program
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
WO2012075343A2 (en) 2010-12-03 2012-06-07 Cirrus Logic, Inc. Oversight control of an adaptive noise canceler in a personal audio device
US9928824B2 (en) 2011-05-11 2018-03-27 Silentium Ltd. Apparatus, system and method of controlling noise within a noise-controlled volume
JP6182524B2 (ja) 2011-05-11 2017-08-16 シレンティウム リミテッド ノイズ・コントロールのデバイス、システム、および方法
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US8848936B2 (en) 2011-06-03 2014-09-30 Cirrus Logic, Inc. Speaker damage prevention in adaptive noise-canceling personal audio devices
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9824677B2 (en) * 2011-06-03 2017-11-21 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
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9076431B2 (en) 2011-06-03 2015-07-07 Cirrus Logic, Inc. Filter architecture for an adaptive noise canceler in a personal audio device
US8811602B2 (en) * 2011-06-30 2014-08-19 Broadcom Corporation Full duplex speakerphone design using acoustically compensated speaker distortion
US9325821B1 (en) * 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
US9142205B2 (en) 2012-04-26 2015-09-22 Cirrus Logic, Inc. Leakage-modeling adaptive noise canceling for earspeakers
US9014387B2 (en) 2012-04-26 2015-04-21 Cirrus Logic, Inc. Coordinated control of adaptive noise cancellation (ANC) among earspeaker channels
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
US9076427B2 (en) 2012-05-10 2015-07-07 Cirrus Logic, Inc. Error-signal content controlled adaptation of secondary and leakage path models in noise-canceling personal audio devices
US9082387B2 (en) 2012-05-10 2015-07-14 Cirrus Logic, Inc. Noise burst adaptation of secondary path adaptive response in noise-canceling 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)
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US9107010B2 (en) 2013-02-08 2015-08-11 Cirrus Logic, Inc. Ambient noise root mean square (RMS) detector
US9369798B1 (en) 2013-03-12 2016-06-14 Cirrus Logic, Inc. Internal dynamic range control in an adaptive noise cancellation (ANC) system
US9106989B2 (en) 2013-03-13 2015-08-11 Cirrus Logic, Inc. Adaptive-noise canceling (ANC) effectiveness estimation and correction in a personal audio device
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
US9215749B2 (en) 2013-03-14 2015-12-15 Cirrus Logic, Inc. Reducing an acoustic intensity vector with adaptive noise cancellation with two error microphones
US9635480B2 (en) 2013-03-15 2017-04-25 Cirrus Logic, Inc. Speaker impedance monitoring
US9467776B2 (en) 2013-03-15 2016-10-11 Cirrus Logic, Inc. Monitoring of speaker impedance to detect pressure applied between mobile device and ear
US9324311B1 (en) 2013-03-15 2016-04-26 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in a personal audio device
US9208771B2 (en) 2013-03-15 2015-12-08 Cirrus Logic, Inc. Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9066176B2 (en) 2013-04-15 2015-06-23 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation including dynamic bias of coefficients of an adaptive noise cancellation system
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
US9460701B2 (en) 2013-04-17 2016-10-04 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by biasing anti-noise level
US9578432B1 (en) 2013-04-24 2017-02-21 Cirrus Logic, Inc. Metric and tool to evaluate secondary path design in adaptive noise cancellation systems
US9264808B2 (en) 2013-06-14 2016-02-16 Cirrus Logic, Inc. Systems and methods for detection and cancellation of narrow-band noise
US9392364B1 (en) 2013-08-15 2016-07-12 Cirrus Logic, Inc. Virtual microphone for adaptive noise cancellation in personal audio devices
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
SG11201602643XA (en) 2013-10-02 2016-05-30 Univ Putra Malaysia Method and apparatus for nonlinear compensation in an active noise control system
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
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
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
US9369557B2 (en) 2014-03-05 2016-06-14 Cirrus Logic, Inc. Frequency-dependent sidetone calibration
US9479860B2 (en) 2014-03-07 2016-10-25 Cirrus Logic, Inc. Systems and methods for enhancing performance of audio transducer based on detection of transducer status
US9648410B1 (en) 2014-03-12 2017-05-09 Cirrus Logic, Inc. Control of audio output of headphone earbuds based on the environment around the headphone earbuds
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
US9609416B2 (en) 2014-06-09 2017-03-28 Cirrus Logic, Inc. Headphone responsive to optical signaling
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
WO2017029550A1 (en) 2015-08-20 2017-02-23 Cirrus Logic International Semiconductor Ltd Feedback adaptive noise cancellation (anc) controller and method having a feedback response partially provided by a fixed-response filter
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
US11074903B1 (en) * 2020-03-30 2021-07-27 Amazon Technologies, Inc. Audio device with adaptive equalization

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517525A3 (en) * 1991-06-06 1993-12-08 Matsushita Electric Ind Co Ltd Noise suppressor
EP0525456B1 (de) * 1991-07-10 1996-11-06 Sharp Kabushiki Kaisha Anordnung mit mehreren digitalen adaptiven Filter
JP3089082B2 (ja) * 1991-07-10 2000-09-18 シャープ株式会社 適応型ディジタルフィルタ
US5337366A (en) * 1992-07-07 1994-08-09 Sharp Kabushiki Kaisha Active control apparatus using adaptive digital filter
US5278913A (en) * 1992-07-28 1994-01-11 Nelson Industries, Inc. Active acoustic attenuation system with power limiting
JP2924496B2 (ja) * 1992-09-30 1999-07-26 松下電器産業株式会社 騒音制御装置
JPH06202669A (ja) * 1992-12-28 1994-07-22 Toshiba Corp 能動消音装置
JP2856625B2 (ja) * 1993-03-17 1999-02-10 株式会社東芝 適応形能動消音装置
US5586189A (en) 1993-12-14 1996-12-17 Digisonix, Inc. Active adaptive control system with spectral leak
JP3685503B2 (ja) * 1994-03-30 2005-08-17 三洋電機株式会社 電子消音装置
US5586190A (en) 1994-06-23 1996-12-17 Digisonix, Inc. Active adaptive control system with weight update selective leakage
US5715320A (en) * 1995-08-21 1998-02-03 Digisonix, Inc. Active adaptive selective control system
US5710822A (en) * 1995-11-07 1998-01-20 Digisonix, Inc. Frequency selective active adaptive control system

Also Published As

Publication number Publication date
EP0973151B1 (de) 2008-10-29
EP0973151A3 (de) 2003-01-02
EP0973151B8 (de) 2009-02-25
EP0973151A2 (de) 2000-01-19
US6418228B1 (en) 2002-07-09

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORPORATION, KADOMA-SHI, OSAKA, JP

8381 Inventor (new situation)

Inventor name: TERAI, KENICHI, SHIJONAWATE-SHI, OSAKA 575-001, JP

Inventor name: HASHIMOTO, HIROYUKI, DAITSOU-SHI, OSAKA, JP

Inventor name: KAKUHARI, ISAO, NIINA, MINO-SHI, OSAKA 562-000, JP

8381 Inventor (new situation)

Inventor name: TERAI, KENICHI, SHIJONAWATE-SHI, OSAKA 575-001, JP

Inventor name: HASHIMOTO, HIROYUKI, DAITOU-SHI, OSAKA, JP

Inventor name: KAKUHARI, ISAO, NIINA, MINO-SHI, OSAKA 562-000, JP

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

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP