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MX9708004A - Sistema de cancelacion de ruido. - Google Patents

Sistema de cancelacion de ruido.

Info

Publication number
MX9708004A
MX9708004A MX9708004A MX9708004A MX9708004A MX 9708004 A MX9708004 A MX 9708004A MX 9708004 A MX9708004 A MX 9708004A MX 9708004 A MX9708004 A MX 9708004A MX 9708004 A MX9708004 A MX 9708004A
Authority
MX
Mexico
Prior art keywords
speaker
noise
circuitry
canceling
time delay
Prior art date
Application number
MX9708004A
Other languages
English (en)
Other versions
MXPA97008004A (es
Inventor
Mark A Daniels
Original Assignee
Carrier Corp
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 Carrier Corp filed Critical Carrier Corp
Publication of MXPA97008004A publication Critical patent/MXPA97008004A/es
Publication of MX9708004A publication Critical patent/MX9708004A/es

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
    • G10K11/17823—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
    • G10K11/1781—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
    • G10K11/17857—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
    • G10K2210/105—Appliances, e.g. washing machines or dishwashers
    • G10K2210/1053—Hi-fi, i.e. anything involving music, radios or loudspeakers
    • 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
    • G10K2210/1082—Microphones, e.g. systems using "virtual" 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/112—Ducts
    • 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
    • G10K2210/3026—Feedback
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3027—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
    • G10K2210/3045—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
    • G10K2210/3049—Random noise used, e.g. in model identification
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Duct Arrangements (AREA)
  • Pipe Accessories (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Dos microfonos separados a lo largo de un ducto de un sistema de acondicionamiento de aire proporcionan salidas del sistema de circuito, por lo que el ruido que se está generando se distingue del ruido reflejado. El sistema de circuito impone un retraso de tiempo que corresponde al tiempo requerido para que el ruido generado pase del microfono corriente arriba a una bocina de cancelacion. La bocina de cancelacion es activada por el sistema de circuito, sometido al retraso de tiempo, de manera que el ruido en la bocina es cancelado por la bocina apropiadamente activada. En una modalidad preferida, el movimiento de la bocina es percibido, por lo que el sonido real que se está produciendo puede ser producido con el sonido requerido por la señal de activacion de la bocina de cancelacion.
MX9708004A 1996-10-18 1997-10-17 Sistema de cancelacion de ruido. MX9708004A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08731788 1996-10-18
US08/731,788 US5832095A (en) 1996-10-18 1996-10-18 Noise canceling system

Publications (2)

Publication Number Publication Date
MXPA97008004A MXPA97008004A (es) 1998-04-01
MX9708004A true MX9708004A (es) 1998-04-30

Family

ID=24940948

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9708004A MX9708004A (es) 1996-10-18 1997-10-17 Sistema de cancelacion de ruido.

Country Status (11)

Country Link
US (1) US5832095A (es)
EP (1) EP0837452A3 (es)
JP (1) JP3375527B2 (es)
CN (1) CN1196101C (es)
AU (1) AU723757B2 (es)
BR (1) BR9705074A (es)
ID (1) ID18590A (es)
MX (1) MX9708004A (es)
NO (1) NO974782L (es)
SG (1) SG53091A1 (es)
TW (1) TW351046B (es)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3346198B2 (ja) * 1996-12-10 2002-11-18 富士ゼロックス株式会社 能動消音装置
FI981409A7 (fi) * 1998-06-17 1999-12-18 Genelec Oy Menetelmä ja laitteisto akustisen heijastuksen vähentämiseksi huoneessa
GB9920883D0 (en) 1999-09-03 1999-11-10 Titon Hardware Ventilation assemblies
JP4560858B2 (ja) * 1999-10-25 2010-10-13 ソニー株式会社 送受信装置
US6308562B1 (en) * 1999-12-22 2001-10-30 W-H Energy Systems, Inc. Technique for signal detection using adaptive filtering in mud pulse telemetry
FI114258B (fi) * 2000-06-09 2004-09-15 Nokia Corp Menetelmä häiriön vaikutuksen vähentämiseksi ja vastaanotin
US6644590B2 (en) 2000-09-15 2003-11-11 General Dynamics Advanced Information Systems, Inc. Active system and method for vibration and noise reduction
WO2002037468A1 (en) * 2000-10-31 2002-05-10 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Preventing oscillations in flow systems
KR20060002167A (ko) * 2004-07-01 2006-01-09 삼성전자주식회사 공기조화기의 소음 예측방법 및 이를 이용한 공기조화기의제조방법
US7282873B2 (en) * 2004-11-16 2007-10-16 Lenovo (Singapore) Pte. Ltd. Mutual active cancellation of fan noise and vibration
CN1905763B (zh) * 2006-08-07 2011-11-23 北京中星微电子有限公司 麦克风校正系统、装置和方法
GB0725114D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Gain calibration based on evice properties
US8165311B2 (en) * 2009-04-06 2012-04-24 International Business Machines Corporation Airflow optimization and noise reduction in computer systems
US20110051946A1 (en) * 2009-09-03 2011-03-03 Paul William Gardiner Air conditioner with integrated sound system
TWI383379B (zh) * 2009-11-27 2013-01-21 C Media Electronics Inc 白噪音階段增益調整方法與應用該方法之裝置
DE102010014226A1 (de) * 2010-04-08 2011-11-24 Hamburg Innovation Gmbh Verfahren und System zur aktiven Lärmreduktion
US9380382B2 (en) 2010-04-15 2016-06-28 Nortek Air Solutions, Llc Methods and systems for active sound attenuation in a fan unit
US9091280B2 (en) 2010-04-15 2015-07-28 Nortek Air Solutions, Llc Methods and systems for active sound attenuation in an air handling unit
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
US9171551B2 (en) * 2011-01-14 2015-10-27 GM Global Technology Operations LLC Unified microphone pre-processing system and method
US20120275614A1 (en) * 2011-04-28 2012-11-01 Sony Corporation Noise cancellation unit
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
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
DE102011106647A1 (de) * 2011-07-05 2013-01-10 J. Eberspächer GmbH & Co. KG Antischall-system für abgasanlagen und verfahren zum steuern desselben
US9325821B1 (en) * 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
US9014387B2 (en) 2012-04-26 2015-04-21 Cirrus Logic, Inc. Coordinated control of adaptive noise cancellation (ANC) among earspeaker channels
US9142205B2 (en) 2012-04-26 2015-09-22 Cirrus Logic, Inc. Leakage-modeling adaptive noise canceling for earspeakers
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)
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
DE102012212843A1 (de) * 2012-07-23 2014-01-23 Behr Gmbh & Co. Kg Klimagerät
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
US9613613B2 (en) * 2013-02-13 2017-04-04 Ixblue Method for active narrow-band acoustic control with variable transfer function(s), and corresponding system
US9369798B1 (en) 2013-03-12 2016-06-14 Cirrus Logic, Inc. Internal dynamic range control in an adaptive noise cancellation (ANC) system
US9215749B2 (en) 2013-03-14 2015-12-15 Cirrus Logic, Inc. Reducing an acoustic intensity vector with adaptive noise cancellation with two error microphones
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
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
US9635480B2 (en) 2013-03-15 2017-04-25 Cirrus Logic, Inc. Speaker impedance monitoring
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
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
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
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
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
US9369557B2 (en) 2014-03-05 2016-06-14 Cirrus Logic, Inc. Frequency-dependent sidetone calibration
JP6343970B2 (ja) * 2014-03-07 2018-06-20 パナソニックＩｐマネジメント株式会社 信号処理装置、プログラム、レンジフード装置
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
CN106469551A (zh) * 2015-08-19 2017-03-01 中兴通讯股份有限公司 一种管道降噪系统及方法
US10026388B2 (en) 2015-08-20 2018-07-17 Cirrus Logic, Inc. 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
CN105321524A (zh) * 2015-09-29 2016-02-10 深圳东方酷音信息技术有限公司 一种数字式前反馈自适应混合有源噪声控制方法及装置
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
CN105782631B (zh) * 2016-04-23 2017-11-03 河南工程学院 基于多模型自适应切换的管道噪声控制方法及装置
CN106847255B (zh) * 2017-03-10 2020-06-16 南京大学 一种三维宽带施罗德散射体
CN107452368B (zh) * 2017-08-14 2021-05-07 海尔优家智能科技（北京）有限公司 一种家电设备的降噪方法及装置
JP6957542B2 (ja) 2019-03-18 2021-11-02 株式会社東芝 推定装置、推定方法
JP2023060750A (ja) * 2021-10-18 2023-04-28 株式会社マキタ 作業機
CN119044885B (zh) * 2024-08-19 2025-04-08 佛山大学 一种单传声器声源测向及定位装置

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044203A (en) * 1972-11-24 1977-08-23 National Research Development Corporation Active control of sound waves
DE3237262C1 (de) * 1982-10-08 1983-10-27 Michael 4000 Düsseldorf Bolz Lautsprecher mit Membrangegenkopplung
US4683590A (en) * 1985-03-18 1987-07-28 Nippon Telegraph And Telphone Corporation Inverse control system
US4636586A (en) * 1985-09-20 1987-01-13 Rca Corporation Speakerphone with adaptive cancellation of room echoes
US4829590A (en) * 1986-01-13 1989-05-09 Technology Research International, Inc. Adaptive noise abatement system
JPS62164400A (ja) * 1986-01-14 1987-07-21 Hitachi Plant Eng & Constr Co Ltd 電子消音システム
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
US5119427A (en) * 1988-03-14 1992-06-02 Hersh Alan S Extended frequency range Helmholtz resonators
US4815139A (en) * 1988-03-16 1989-03-21 Nelson Industries, Inc. Active acoustic attenuation system for higher order mode non-uniform sound field in a duct
US4837834A (en) * 1988-05-04 1989-06-06 Nelson Industries, Inc. Active acoustic attenuation system with differential filtering
DE68916356T2 (de) * 1988-09-30 1994-10-13 Toshiba Kawasaki Kk Lärmunterdrücker.
US4987598A (en) * 1990-05-03 1991-01-22 Nelson Industries Active acoustic attenuation system with overall modeling
US5283834A (en) * 1991-08-26 1994-02-01 Nelson Industries, Inc. Acoustic system suppressing detection of higher order modes
US5347585A (en) * 1991-09-10 1994-09-13 Calsonic Corporation Sound attenuating system
US5206911A (en) * 1992-02-11 1993-04-27 Nelson Industries, Inc. Correlated active attenuation system with error and correction signal input
DE69327885T2 (de) * 1992-05-26 2000-10-05 Fujitsu Ten Ltd., Kobe Lärm-Kontroll-Gerät
US5377275A (en) * 1992-07-29 1994-12-27 Kabushiki Kaisha Toshiba Active noise control apparatus
JP3340496B2 (ja) * 1993-03-09 2002-11-05 富士通株式会社 アクティブ騒音制御システムの伝達特性の推定方法
US5420932A (en) * 1993-08-23 1995-05-30 Digisonix, Inc. Active acoustic attenuation system that decouples wave modes propagating in a waveguide
US5418873A (en) * 1993-09-09 1995-05-23 Digisonix, Inc. Active acoustic attenuation system with indirect error sensing
JPH07104890A (ja) * 1993-10-01 1995-04-21 Fujitsu Ltd 騒音低減装置
US5689572A (en) * 1993-12-08 1997-11-18 Hitachi, Ltd. Method of actively controlling noise, and apparatus thereof
US5526292A (en) * 1994-11-30 1996-06-11 Lord Corporation Broadband noise and vibration reduction
EP0836737A1 (en) * 1995-07-05 1998-04-22 Alumax Inc. Method and apparatus for active noise control of high order modes in ducts
US5713438A (en) * 1996-03-25 1998-02-03 Lord Corporation Method and apparatus for non-model based decentralized adaptive feedforward active vibration control

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EP0837452A3 (en) 2001-01-24
SG53091A1 (en) 1998-09-28
BR9705074A (pt) 1999-03-30
CN1196101C (zh) 2005-04-06
ID18590A (id) 1998-04-23
US5832095A (en) 1998-11-03
AU4187797A (en) 1998-04-23
NO974782D0 (no) 1997-10-16
TW351046B (en) 1999-01-21
CN1180980A (zh) 1998-05-06
NO974782L (no) 1998-05-11
JP3375527B2 (ja) 2003-02-10
JPH10149170A (ja) 1998-06-02
EP0837452A2 (en) 1998-04-22
AU723757B2 (en) 2000-09-07

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