WO2009028349A1 - 特定信号消去方法、特定信号消去装置、適応フィルタ係数更新方法、適応フィルタ係数更新装置及びコンピュータプログラム - Google Patents

特定信号消去方法、特定信号消去装置、適応フィルタ係数更新方法、適応フィルタ係数更新装置及びコンピュータプログラム Download PDF

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Publication number
WO2009028349A1
WO2009028349A1 PCT/JP2008/064727 JP2008064727W WO2009028349A1 WO 2009028349 A1 WO2009028349 A1 WO 2009028349A1 JP 2008064727 W JP2008064727 W JP 2008064727W WO 2009028349 A1 WO2009028349 A1 WO 2009028349A1
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WO
WIPO (PCT)
Prior art keywords
adaptive filter
particular signal
filter coefficient
coefficient update
signal
Prior art date
Application number
PCT/JP2008/064727
Other languages
English (en)
French (fr)
Inventor
Akihiko Sugiyama
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to JP2009530053A priority Critical patent/JP5423966B2/ja
Priority to US12/675,492 priority patent/US8953776B2/en
Publication of WO2009028349A1 publication Critical patent/WO2009028349A1/ja
Priority to US14/587,276 priority patent/US9728178B2/en

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • 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
    • G10K2210/505—Echo cancellation, e.g. multipath-, ghost- or reverberation-cancellation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H2021/007—Computation saving measures; Accelerating measures
    • H03H2021/0076—Measures relating to the convergence time
    • H03H2021/0078—Measures relating to the convergence time varying the step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)

Abstract

　本発明の課題は、個別に推定された定常雑音と非定常雑音から成る混合雑音を利用し適応フィルタの係数を更新し特定の信号を消去することにある。本発明は、適応フィルタにより参照入力信号を処理して消去すべき特定信号の疑似信号を求め、該疑似信号を、マイクロフォンから入力した目的信号、消去すべき特定信号及び雑音を含む混在信号から減算して誤差信号を求める。定常雑音を推定して定常雑音推定値を求め非定常雑音を推定して非定常雑音推定値を求める。定常雑音推定値と非定常雑音推定値を混合し混合雑音推定値を求め、誤差信号と参照入力信号間の相関値と混合雑音推定値とから更新量を算出し、この更新量に基づき適応フィルタの係数を更新する。
PCT/JP2008/064727 2007-08-27 2008-08-19 特定信号消去方法、特定信号消去装置、適応フィルタ係数更新方法、適応フィルタ係数更新装置及びコンピュータプログラム WO2009028349A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009530053A JP5423966B2 (ja) 2007-08-27 2008-08-19 特定信号消去方法、特定信号消去装置、適応フィルタ係数更新方法、適応フィルタ係数更新装置及びコンピュータプログラム
US12/675,492 US8953776B2 (en) 2007-08-27 2008-08-19 Particular signal cancel method, particular signal cancel device, adaptive filter coefficient update method, adaptive filter coefficient update device, and computer program
US14/587,276 US9728178B2 (en) 2007-08-27 2014-12-31 Particular signal cancel method, particular signal cancel device, adaptive filter coefficient update method, adaptive filter coefficient update device, and computer program

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007220448 2007-08-27
JP2007-220448 2007-08-27

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US12/675,492 A-371-Of-International US8953776B2 (en) 2007-08-27 2008-08-19 Particular signal cancel method, particular signal cancel device, adaptive filter coefficient update method, adaptive filter coefficient update device, and computer program
US14/587,276 Division US9728178B2 (en) 2007-08-27 2014-12-31 Particular signal cancel method, particular signal cancel device, adaptive filter coefficient update method, adaptive filter coefficient update device, and computer program

Publications (1)

Publication Number Publication Date
WO2009028349A1 true WO2009028349A1 (ja) 2009-03-05

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Family Applications (1)

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Country Status (3)

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US (2) US8953776B2 (ja)
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WO (1) WO2009028349A1 (ja)

Cited By (5)

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JP2011130170A (ja) * 2009-12-17 2011-06-30 Oki Electric Industry Co Ltd エコーキャンセラ
JP5296247B1 (ja) * 2012-07-02 2013-09-25 リオン株式会社 音処理装置及びフィードバックキャンセル方法
JPWO2014112023A1 (ja) * 2013-01-17 2017-01-19 日本電気株式会社 雑音除去システム、音声検出システム、音声認識システム、雑音除去方法および雑音除去プログラム
US9660733B2 (en) 2014-11-10 2017-05-23 Fujitsu Limited Signal processing apparatus, signal processing method, and signal processing system
CN112748429A (zh) * 2020-12-28 2021-05-04 中国人民解放军空军工程大学 一种快速噪声对消滤波方法

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US8675901B2 (en) * 2011-10-14 2014-03-18 Panasonic Corporation Howling suppression device, hearing aid, howling suppression method, and integrated circuit
US8781023B2 (en) 2011-11-01 2014-07-15 At&T Intellectual Property I, L.P. Method and apparatus for improving transmission of data on a bandwidth expanded channel
US8774308B2 (en) * 2011-11-01 2014-07-08 At&T Intellectual Property I, L.P. Method and apparatus for improving transmission of data on a bandwidth mismatched channel
US8909685B2 (en) * 2011-12-16 2014-12-09 Sap Se Pattern recognition of a distribution function
US9100257B2 (en) * 2012-01-25 2015-08-04 Marvell World Trade Ltd. Systems and methods for composite adaptive filtering
CN103888630A (zh) 2012-12-20 2014-06-25 杜比实验室特许公司 用于控制声学回声消除的方法和音频处理装置
US10135968B2 (en) * 2013-04-15 2018-11-20 Nuance Communications, Inc. System and method for acoustic echo cancellation
CN105812994B (zh) * 2014-12-30 2018-08-21 展讯通信（上海）有限公司 一种降低失真回声的方法及装置
CN105812598B (zh) * 2014-12-30 2019-04-30 展讯通信（上海）有限公司 一种降低回声的方法及装置
WO2019187841A1 (ja) * 2018-03-30 2019-10-03 パナソニックＩｐマネジメント株式会社 騒音低減装置

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JPS63279622A (ja) * 1987-05-11 1988-11-16 Nec Corp 最大修正量制限形エコ−キヤンセラ
JPH1041859A (ja) * 1996-07-23 1998-02-13 Nec Corp 音響エコーキャンセラ
JP2000252891A (ja) * 1999-02-26 2000-09-14 Toshiba Corp 信号処理装置
JP2002076999A (ja) * 2000-08-25 2002-03-15 Nec Eng Ltd システム同定方法および装置
WO2006049260A1 (ja) * 2004-11-08 2006-05-11 Nec Corporation 信号処理の方法、信号処理の装置および信号処理用プログラム

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JP3008763B2 (ja) 1993-12-28 2000-02-14 日本電気株式会社 適応フィルタによるシステム同定の方法および装置
US6570985B1 (en) * 1998-01-09 2003-05-27 Ericsson Inc. Echo canceler adaptive filter optimization
DE60108752T2 (de) * 2000-05-26 2006-03-30 Koninklijke Philips Electronics N.V. Verfahren zur rauschunterdrückung in einem adaptiven strahlformer
US7478042B2 (en) * 2000-11-30 2009-01-13 Panasonic Corporation Speech decoder that detects stationary noise signal regions
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JPS63279622A (ja) * 1987-05-11 1988-11-16 Nec Corp 最大修正量制限形エコ−キヤンセラ
JPH1041859A (ja) * 1996-07-23 1998-02-13 Nec Corp 音響エコーキャンセラ
JP2000252891A (ja) * 1999-02-26 2000-09-14 Toshiba Corp 信号処理装置
JP2002076999A (ja) * 2000-08-25 2002-03-15 Nec Eng Ltd システム同定方法および装置
JP3631668B2 (ja) * 2000-08-25 2005-03-23 日本電気エンジニアリング株式会社 システム同定方法および装置
WO2006049260A1 (ja) * 2004-11-08 2006-05-11 Nec Corporation 信号処理の方法、信号処理の装置および信号処理用プログラム

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011130170A (ja) * 2009-12-17 2011-06-30 Oki Electric Industry Co Ltd エコーキャンセラ
JP5296247B1 (ja) * 2012-07-02 2013-09-25 リオン株式会社 音処理装置及びフィードバックキャンセル方法
JPWO2014112023A1 (ja) * 2013-01-17 2017-01-19 日本電気株式会社 雑音除去システム、音声検出システム、音声認識システム、雑音除去方法および雑音除去プログラム
US9660733B2 (en) 2014-11-10 2017-05-23 Fujitsu Limited Signal processing apparatus, signal processing method, and signal processing system
CN112748429A (zh) * 2020-12-28 2021-05-04 中国人民解放军空军工程大学 一种快速噪声对消滤波方法
CN112748429B (zh) * 2020-12-28 2023-09-08 中国人民解放军空军工程大学 一种快速噪声对消滤波方法

Also Published As

Publication number Publication date
US20100223311A1 (en) 2010-09-02
JP5423966B2 (ja) 2014-02-19
US8953776B2 (en) 2015-02-10
JPWO2009028349A1 (ja) 2010-11-25
US9728178B2 (en) 2017-08-08
US20150117658A1 (en) 2015-04-30

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