JP4739226B2 - フィードフォワードおよびフィードバック制御器を含むアクティブ雑音制御方法および装置 - Google Patents
フィードフォワードおよびフィードバック制御器を含むアクティブ雑音制御方法および装置 Download PDFInfo
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- JP4739226B2 JP4739226B2 JP2006541703A JP2006541703A JP4739226B2 JP 4739226 B2 JP4739226 B2 JP 4739226B2 JP 2006541703 A JP2006541703 A JP 2006541703A JP 2006541703 A JP2006541703 A JP 2006541703A JP 4739226 B2 JP4739226 B2 JP 4739226B2
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Classifications
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- 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
- G10K11/1781—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
- G10K11/17857—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
- G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure 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
- 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
- G10K2210/3028—Filtering, e.g. Kalman filters or special analogue or digital filters
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
e(t,θ)=H(q)u(t)+F(q,θ)G(q)u(t) (5)
ここで信号の定義は、
y(t):=H(q)u(t),uf(t):=−G(q)u(t) (6)
(6)は、
e(t,θ)=y(t)−F(q,θ)uf(t)
に導かれ、このために、最適なフィードフォワード・フィルタF(q;θ)を計算するための最小化
y(t)=H(q)u(t)=e(t) (12)
図2におけるANCシステムの機械的および幾何的な特性がいったん固定されると、G(q)26が固定されるため、初期のオフライン推定を用いてフィルタ処理された入力信号uf(t)を構成するG(q)26に関するモデルを推定することが可能となる。
推定エラーの構成は下記のように求められる。
ε(t,β)=e(t)−G(q,β)uc(t)
また最小化は下記のように求められる。
一般化されたFIRフィルタ31の使用を促進するために、等式(10)における基底関数fk(q)が選択される。基底関数の下位のモデルは一般化されたFIRフィルタ31として十分であり、一般化されたFIRフィルタ31は基底関数fk(q)に基づいて拡張して、フィードフォワード補償器16の正確度が増す。フィードフォワード補償器16の初期化の一部として、フィードフォワード・フィルタF(q)31の等式(10)における下位のIIRモデル
y(t)=H(q)u(t)=e(t)+F(q,θk−1)uf(t) (16)
また信号y(t)はエラー・マイクロフォン信号e(t)および等式(14)によって想定されることが可能なフィルタ処理された入力信号uf(t)=G(q)u(t)の測定を必要とする。等式(16)における信号y(t)、等式(14)における
e1(t)=H(q)u(t) (18)
さらに入力マイクロフォン12は(19)のように測定される。
e(t,θ)=e1(t)−F(q,θ)e2(t)−F(q,θ)G(q)v(t) (21)
あるいは推定モデルG(q)の
入力マイクロフォン12の特定の場所に関するフィードフォワードANCシステム10の性能は
フィルタ係数の有限数dは提案1において選択されて、フィルタ係数の実行可能な最適化を提供する。FIRパラメータ化、
添付の特許請求の範囲に本発明の種々の特徴を記載する。
Claims (9)
- システムにおける雑音源からの雑音を減少させるためのアクティブ騒音制御装置であって、
雑音源によって生成された雑音を検出する第一の検出器と、
前記第一の検出器から検出された雑音の雑音信号を受信して、雑音源からの雑音を減少させる制御信号を生成するための一般化された有限インパルス応答(FIR)フィルタと、
雑音源からの雑音を打ち消すための前記一般化されたFIRフィルタからの前記制御信号に基づいて、音を発生させる音発生器を備え、
前記一般化されたFIRフィルタが、
ここでf k (q)は前記一般化されたFIRフィルタの所望の動的な動作に対する情報を含む一般化された、すなわち正規直交の基底関数であり、θ 0 は前記一般化されたFIRフィルタの直接的なフィードスルー項であり、θ k は前記一般化されたFIRフィルタの最適なフィルタ係数であり、
前記一般化されたFIRフィルタは前記基底関数f k (q)を初期化することおよび、前記初期化された基底関数f k (q)に基づいて前記θ k を再帰的に推定することによって構成され、
前記基底関数f k (q)は、前記一般化されたFIRフィルタの初期近似情報ダイナミクスを含む所定の動的なモデルによって初期化されることを特徴とするアクティブ騒音制御装置。 - 前記一般化されたFIRフィルタがフィードフォワード補償器であることを特徴とする請求項1に記載の装置。
- 前記第一の検出器が雑音源の下流に設けられ、前記音発生器が前記第一の検出器の下流に設けられることを特徴とする請求項2に記載の装置。
- さらに前記音発生器の下流の雑音を検出する第二の検出器を備えることを特徴とする請求項1に記載のアクティブ騒音制御装置。
- 前記第二の検出器によって検出された雑音の信号が、
ここでW(q)は白色雑音信号n(t)に関する安定したかつ安定的に可逆的な雑音フィルタであり、H(q)は前記第一の検出器からの入力信号u(t)と前記第二の検出器によって検出された前記信号e(t)間の動的な関係を特徴づけ、G(q)は前記一般化されたFIRフィルタF(q)からの前記制御信号と前記第二の検出器によって検出された前記信号e(t)間の関係を特徴づけ、Gc(q)は、前記一般化されたFIRフィルタF(q)によって正フィードバック・ループを作成する、前記音発生器信号から前記第一の検出器からの前記信号u(t)に戻される音響結合を示す請求項4に記載の装置。 - 前記第一の検出器は、
- 前記第一の検出器と前記第二の検出器はマイクロフォンであり、前記音発生器はスピーカであることを特徴とする請求項1に記載の装置。
- 一般化された、すなわち正規直交の基底関数が音伝播のダイナミクスに基づいて選択される、請求項1に記載の装置。
- 音伝播のダイナミクスが音のダイナミクスについての従前の知識を含む、請求項8に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52556803P | 2003-11-26 | 2003-11-26 | |
US60/525,568 | 2003-11-26 | ||
PCT/US2004/039532 WO2005053586A1 (en) | 2003-11-26 | 2004-11-24 | Active noise control method and apparatus including feedforward and feedback controllers |
Publications (2)
Publication Number | Publication Date |
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JP2007517242A JP2007517242A (ja) | 2007-06-28 |
JP4739226B2 true JP4739226B2 (ja) | 2011-08-03 |
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JP2006541703A Expired - Fee Related JP4739226B2 (ja) | 2003-11-26 | 2004-11-24 | フィードフォワードおよびフィードバック制御器を含むアクティブ雑音制御方法および装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7688984B2 (ja) |
EP (1) | EP1703878A4 (ja) |
JP (1) | JP4739226B2 (ja) |
CN (1) | CN1886104A (ja) |
WO (1) | WO2005053586A1 (ja) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7539459B2 (en) * | 2004-04-02 | 2009-05-26 | Edwards Vacuum, Inc. | Active noise cancellation system, arrangement, and method |
JP4974570B2 (ja) * | 2006-04-14 | 2012-07-11 | 富士通テン株式会社 | 音響再生装置、音響再生システム、音響信号生成方法及び音響打消方法 |
US7911901B2 (en) * | 2006-07-24 | 2011-03-22 | Marvell World Trade Ltd. | Magnetic and optical rotating storage systems with audio monitoring |
GB2441835B (en) * | 2007-02-07 | 2008-08-20 | Sonaptic Ltd | Ambient noise reduction system |
US8175829B2 (en) * | 2008-03-28 | 2012-05-08 | Agilent Technologies, Inc. | Analyzer for signal anomalies |
US20110093247A1 (en) * | 2008-06-13 | 2011-04-21 | Control Station, Inc. | System and method for non-steady state model fitting |
US20100002385A1 (en) * | 2008-07-03 | 2010-01-07 | Geoff Lyon | Electronic device having active noise control and a port ending with curved lips |
CN101393736B (zh) * | 2008-10-28 | 2011-03-30 | 南京大学 | 无次级通道建模的有源噪声控制方法 |
US8077873B2 (en) * | 2009-05-14 | 2011-12-13 | Harman International Industries, Incorporated | System for active noise control with adaptive speaker selection |
US8737636B2 (en) | 2009-07-10 | 2014-05-27 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for adaptive active noise cancellation |
CN101789771B (zh) * | 2010-01-11 | 2014-03-05 | 南京大学 | 基于对数变换的脉冲噪声有源控制方法 |
CN102332260A (zh) * | 2011-05-30 | 2012-01-25 | 南京大学 | 一体式单通道反馈有源噪声控制系统 |
US10653044B2 (en) | 2013-01-10 | 2020-05-12 | International Business Machines Corporation | Energy efficiency based control for a cooling system |
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JP6433340B2 (ja) * | 2015-03-03 | 2018-12-05 | 株式会社小野測器 | 信号解析装置およびノッキング検出装置 |
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 |
EP3249216B1 (en) | 2016-05-27 | 2024-09-18 | Siemens Gamesa Renewable Energy A/S | Rotor blade with noise reduction means |
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US10462565B2 (en) | 2017-01-04 | 2019-10-29 | Samsung Electronics Co., Ltd. | Displacement limiter for loudspeaker mechanical protection |
US10506347B2 (en) | 2018-01-17 | 2019-12-10 | Samsung Electronics Co., Ltd. | Nonlinear control of vented box or passive radiator loudspeaker systems |
EP3759708A1 (en) * | 2018-02-27 | 2021-01-06 | Harman Becker Automotive Systems GmbH | Feedforward active noise control |
US10701485B2 (en) | 2018-03-08 | 2020-06-30 | Samsung Electronics Co., Ltd. | Energy limiter for loudspeaker protection |
US10542361B1 (en) | 2018-08-07 | 2020-01-21 | Samsung Electronics Co., Ltd. | Nonlinear control of loudspeaker systems with current source amplifier |
US11012773B2 (en) | 2018-09-04 | 2021-05-18 | Samsung Electronics Co., Ltd. | Waveguide for smooth off-axis frequency response |
US10797666B2 (en) | 2018-09-06 | 2020-10-06 | Samsung Electronics Co., Ltd. | Port velocity limiter for vented box loudspeakers |
US10586523B1 (en) | 2019-03-29 | 2020-03-10 | Sonova Ag | Hearing device with active noise control based on wind noise |
CN110808750B (zh) * | 2019-11-08 | 2021-03-26 | 电子科技大学 | 一种基于逆滤波的邻道干扰抑制方法和装置 |
US11356773B2 (en) | 2020-10-30 | 2022-06-07 | Samsung Electronics, Co., Ltd. | Nonlinear control of a loudspeaker with a neural network |
CN114040284B (zh) * | 2021-09-26 | 2024-02-06 | 北京小米移动软件有限公司 | 噪声的处理方法、噪声的处理装置、终端及存储介质 |
KR20240024638A (ko) * | 2022-08-17 | 2024-02-26 | 삼성전자주식회사 | 전자 장치 및 그 제어 방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06202669A (ja) * | 1992-12-28 | 1994-07-22 | Toshiba Corp | 能動消音装置 |
JPH08194489A (ja) * | 1995-01-17 | 1996-07-30 | Hitachi Ltd | 能動消音システムおよびこのシステムを搭載した装置 |
JPH11202875A (ja) * | 1998-01-09 | 1999-07-30 | Yutaka Maeda | アクティブノイズコントローラ |
JP2001295622A (ja) * | 2000-04-18 | 2001-10-26 | Fuji Xerox Co Ltd | 能動型消音装置 |
JP2003288079A (ja) * | 2002-03-27 | 2003-10-10 | Toshiba Corp | 能動消音装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
NL9302013A (nl) * | 1993-11-19 | 1995-06-16 | Tno | Systeem voor snelle convergentie van een adaptief filter bij het genereren van een tijdvariant signaal ter opheffing van een primair signaal. |
EP0814456A3 (en) * | 1996-06-17 | 1998-10-07 | Lord Corporation | Active noise or vibration control (ANVC) system and method including enhanced reference signals |
US6208739B1 (en) * | 1998-05-20 | 2001-03-27 | The Regents Of The University Of Michigan | Noise and vibration suppression method and system |
-
2004
- 2004-11-24 WO PCT/US2004/039532 patent/WO2005053586A1/en not_active Application Discontinuation
- 2004-11-24 CN CNA2004800349708A patent/CN1886104A/zh active Pending
- 2004-11-24 JP JP2006541703A patent/JP4739226B2/ja not_active Expired - Fee Related
- 2004-11-24 EP EP04812117A patent/EP1703878A4/en not_active Withdrawn
- 2004-11-24 US US10/579,520 patent/US7688984B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06202669A (ja) * | 1992-12-28 | 1994-07-22 | Toshiba Corp | 能動消音装置 |
JPH08194489A (ja) * | 1995-01-17 | 1996-07-30 | Hitachi Ltd | 能動消音システムおよびこのシステムを搭載した装置 |
JPH11202875A (ja) * | 1998-01-09 | 1999-07-30 | Yutaka Maeda | アクティブノイズコントローラ |
JP2001295622A (ja) * | 2000-04-18 | 2001-10-26 | Fuji Xerox Co Ltd | 能動型消音装置 |
JP2003288079A (ja) * | 2002-03-27 | 2003-10-10 | Toshiba Corp | 能動消音装置 |
Also Published As
Publication number | Publication date |
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JP2007517242A (ja) | 2007-06-28 |
US7688984B2 (en) | 2010-03-30 |
US20070086598A1 (en) | 2007-04-19 |
WO2005053586A1 (en) | 2005-06-16 |
CN1886104A (zh) | 2006-12-27 |
EP1703878A4 (en) | 2009-08-26 |
EP1703878A1 (en) | 2006-09-27 |
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