JP5342006B2 - アクティブ雑音低減フィルタの漏れ係数の調節 - Google Patents
アクティブ雑音低減フィルタの漏れ係数の調節 Download PDFInfo
- Publication number
- JP5342006B2 JP5342006B2 JP2011532120A JP2011532120A JP5342006B2 JP 5342006 B2 JP5342006 B2 JP 5342006B2 JP 2011532120 A JP2011532120 A JP 2011532120A JP 2011532120 A JP2011532120 A JP 2011532120A JP 5342006 B2 JP5342006 B2 JP 5342006B2
- Authority
- JP
- Japan
- Prior art keywords
- coefficient
- leakage
- filter
- factor
- signal
- 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.)
- Active
Links
Images
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
- G10K11/1781—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
- G10K11/1783—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
- G10K11/17835—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 using detection of abnormal input 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
- G10K11/1785—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
- G10K11/17883—General system configurations using both a reference signal and an error signal the reference signal being derived from a machine operating condition, e.g. engine RPM or vehicle speed
-
- 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
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
-
- 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
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
-
- 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
-
- 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
- G10K2210/3056—Variable gain
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Description
(new _ value) = α(old _ value) + (update _ amount)
となる。
漏れ係数に関する情報は、Simon Haykinによる「Adaptive Filter Theory」、第4版、ISBN 0130901261のセクション13.2に見出すことができる。論理ブロック52は、所定のトリガイベントが発生しているか否か、または代替的な漏れ係数を使用することを望ましくしうる所定のトリガ条件が存在するか否か判断する。イベントまたは条件の具体例は、以下で図3Eについて論じる際に説明する。論理ブロック52の値が偽の場合、デフォルトの漏れ係数Dが漏れ係数決定論理ブロック48で適用される。論理ブロック52の値が真の場合、代替的な、通常はより低い漏れ係数Aが漏れ係数決定論理ブロック48で適用されうる。代替的な漏れ係数は、アルゴリズムにしたがって計算されてよく、または所定の基準に基づいて離散的な数の所定の漏れ係数値から漏れ係数値を選択することによって機能してもよい。漏れ係数が急変して望ましくない結果が生じることを防ぐために、漏れ係数のストリームは、例えばローパスフィルタリングによって選択的に平滑化できる(ブロック50)。ローパスフィルタリングによって、適応フィルタ16が適用する漏れ係数は、デフォルトの漏れ係数および代替的な漏れ係数の制約を受ける。他の形態の平滑化は、一定時間におけるスルー制限または平均化を含むことができる。
(new _ value) = α(old _ value) + (update _ amount)
により係数更新プロセスに適用できる。
1つの実施形態では、漏れ係数αは、
(new _ value) = α((old _ value) + (update _ amount))
として係数更新プロセスに適用される。
この実施形態では、漏れ係数は古い値だけでなく更新量にも適用される。
S(n) = w1(n)sin(n)+ w2(n)cos(n)=|S(n)| sin(n + ang(S(n)))
ここで、S(n)は適応フィルタ16の正味出力、w1(n)は正弦項適応フィルタのフィルタ係数の新しい値、w2(n)は余弦項適応フィルタのフィルタ係数の新しい値、|S(n)|はS(n)の絶対値であり、
αdefault=αbase+λA
となることがあり、αbaseは基本漏れ値、Aは消去信号の振幅、λは、デフォルトの漏れ係数と消去信号の振幅との線形関係の傾き(通常は負)を表す数字である。他の例では、漏れ係数は、非線形関数、例えば二次関数または指数関数によって決定することができ、または他の例では、傾きはゼロであってよく、ゼロは、デフォルトの漏れ係数および代替的な漏れ係数が設定値を有する図3Bの実施形態と同じである。
(new _ value) = α(old _ value) + (update _ amount)
または
(new _ value) = α((old _ value)+ (update _ amount ))
により続く。
14 結合器
16 適応フィルタ
18 漏れ調節器
19 雑音低減基準信号生成器
20 係数計算器
22 フィルタ
22' 客室フィルタ
24, 24' 入力トランスデューサ
24" マイクロフォン
26 電力増幅器
28 出力トランスデューサ
28' 音響ドライバ
30 増幅器
32 エンターテイメントバス
34 車両データバス
36 ブリッジ
37 制御ブロック
38 信号線
40 信号線
44 エンターテイメント制御バス
48 漏れ係数決定論理ブロック
49 エンターテイメント音声信号バス
50 データ平滑化器
52 論理ブロック
53-1〜53-n 論理ブロック
55-1〜55-n 論理ブロック
59-1〜59-n 矢印
57 デフォルトの漏れ係数ブロック
60 適応レートモジュール
61 曲線
62 曲線
65 適応レート決定器
70 誤り信号レベル監視器
71 不安定制御ブロック
72 加算器
74 乗算器
77 更新量
80 変化率ブロック
81 ボックス
155-1〜155-n 漏れ係数計算器
157 デフォルトの漏れ係数計算器
163-1〜163-n 論理ブロック
166-1〜166-n 論理ブロック
168-1〜168-n 適応レート計算器
167 デフォルトの適応レートブロック
170 デフォルトの適応レート計算器
Claims (8)
- アクティブ雑音低減システムを動かすための方法であって、
雑音信号に応じて適応フィルタにフィルタ係数を提供する段階と、
漏れ係数を決定する段階と、
前記漏れ係数を平滑化して平滑化済み漏れ係数を提供する段階と、
前記フィルタ係数に前記平滑化済み漏れ係数を適用して修正済みフィルタ係数を提供する段階と、
前記フィルタ係数を使用する前記適応フィルタを音声信号に適用して、アクティブ雑音低減信号を生成する段階と、
を含み、
前記決定する段階が、基準入力信号の周波数の関数として漏れ係数を決定する段階を含み、
前記基準入力信号の周波数の変化率が、所定の閾値レベルより大きいか否かが判断され、所定の閾値レベルを上回っていない場合、前記漏れ係数が変更されることを特徴とする方法。 - 前記フィルタ係数に前記平滑化済み漏れ係数を適用して修正済みフィルタ係数を提供する段階が、古いフィルタ係数値およびフィルタ係数更新量と前記平滑化済み漏れ係数とを掛ける段階を含むことを特徴とする請求項1に記載の方法。
- アクティブ雑音低減信号を提供するための適応フィルタと、
前記適応フィルタにフィルタ係数を提供するための係数計算器と、
前記フィルタ係数に適用する平滑化済み漏れ係数を提供するデータ平滑化器を具備している漏れ調節器と、
音声信号に前記係数を適用するための回路と、
を含み、
前記漏れ調節器は、基準入力信号の周波数の関数として漏れ係数を決定し、前記データ平滑化器に前記漏れ係数を提供する回路をさらに含み、
前記基準入力信号の周波数の変化率が、所定の閾値レベルより大きいか否かが判断され、所定の閾値レベルを上回っていない場合、前記漏れ係数が変更されることを特徴とするアクティブ雑音低減システム。 - 前記漏れ係数を決定する段階は、
第1トリガ条件に応じて第1漏れ係数を提供する段階と、
第2トリガ条件に応じて、前記第1漏れ係数とは異なる第2漏れ係数を提供する段階と、
前記第1トリガ条件および前記第2トリガ条件がない場合、デフォルトの漏れ係数を提供する段階と、
を含み、
前記第1漏れ係数を前記提供する段階、前記第2漏れ係数を前記提供する段階、および前記デフォルトの漏れ係数を前記提供する段階のうち少なくとも1つが、基準入力信号の周波数の関数として前記漏れ係数値を決定することを特徴とする請求項1に記載の方法。 - フィルタ係数更新量に前記漏れ係数を適用する段階をさらに含むことを特徴とする請求項1に記載の方法。
- 車両のアクティブ雑音軽減システムの動作に組み込まれることを特徴とする請求項1に記載の方法。
- 前記漏れ係数を前記適用する段階が、前記漏れ係数を前記適用する段階の前に適応フィルタ係数値と係数値更新量とを結合する段階を含むことを特徴とする請求項1に記載の方法。
- 前記漏れ係数を前記適用する段階が、
前記適応フィルタ係数値に前記漏れ係数を適用して修正済み適応フィルタ係数値を提供する段階と、
前記係数値更新量に前記漏れ係数を適用して修正済み係数値更新量を提供する段階と、
前記修正済み適応フィルタ係数値と前記修正済み係数値更新量とを結合する段階と
を含むことを特徴とする請求項1に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/254,037 | 2008-10-20 | ||
US12/254,037 US8355512B2 (en) | 2008-10-20 | 2008-10-20 | Active noise reduction adaptive filter leakage adjusting |
PCT/US2009/057787 WO2010047907A1 (en) | 2008-10-20 | 2009-09-22 | Adjusting leakage factors of an active noise reduction filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012506069A JP2012506069A (ja) | 2012-03-08 |
JP5342006B2 true JP5342006B2 (ja) | 2013-11-13 |
Family
ID=41571074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011532120A Active JP5342006B2 (ja) | 2008-10-20 | 2009-09-22 | アクティブ雑音低減フィルタの漏れ係数の調節 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8355512B2 (ja) |
EP (1) | EP2351019B1 (ja) |
JP (1) | JP5342006B2 (ja) |
CN (1) | CN102187387A (ja) |
WO (1) | WO2010047907A1 (ja) |
Families Citing this family (94)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070297619A1 (en) * | 2006-06-26 | 2007-12-27 | Bose Corporation*Ewc* | Active noise reduction engine speed determining |
US8194873B2 (en) * | 2006-06-26 | 2012-06-05 | Davis Pan | Active noise reduction adaptive filter leakage adjusting |
US8204242B2 (en) * | 2008-02-29 | 2012-06-19 | Bose Corporation | Active noise reduction adaptive filter leakage adjusting |
US8355512B2 (en) | 2008-10-20 | 2013-01-15 | Bose Corporation | Active noise reduction adaptive filter leakage adjusting |
US8306240B2 (en) * | 2008-10-20 | 2012-11-06 | Bose Corporation | Active noise reduction adaptive filter adaptation rate adjusting |
US8135140B2 (en) * | 2008-11-20 | 2012-03-13 | Harman International Industries, Incorporated | System for active noise control with audio signal compensation |
US9020158B2 (en) * | 2008-11-20 | 2015-04-28 | Harman International Industries, Incorporated | Quiet zone control system |
US8718289B2 (en) * | 2009-01-12 | 2014-05-06 | Harman International Industries, Incorporated | System for active noise control with parallel adaptive filter configuration |
US8189799B2 (en) * | 2009-04-09 | 2012-05-29 | Harman International Industries, Incorporated | System for active noise control based on audio system output |
US8199924B2 (en) * | 2009-04-17 | 2012-06-12 | Harman International Industries, Incorporated | System for active noise control with an infinite impulse response filter |
US8077873B2 (en) * | 2009-05-14 | 2011-12-13 | Harman International Industries, Incorporated | System for active noise control with adaptive speaker selection |
DE202009009804U1 (de) * | 2009-07-17 | 2009-10-29 | Sennheiser Electronic Gmbh & Co. Kg | Headset und Hörer |
JP5937611B2 (ja) | 2010-12-03 | 2016-06-22 | シラス ロジック、インコーポレイテッド | パーソナルオーディオデバイスにおける適応ノイズキャンセラの監視制御 |
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 |
US9857776B2 (en) * | 2011-04-05 | 2018-01-02 | Bridgestone Corporation | Vehicle vibration reduction system |
US9076431B2 (en) | 2011-06-03 | 2015-07-07 | Cirrus Logic, Inc. | Filter architecture for an adaptive noise canceler in a personal audio device |
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 |
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 |
US9214150B2 (en) | 2011-06-03 | 2015-12-15 | Cirrus Logic, Inc. | Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices |
US8958571B2 (en) * | 2011-06-03 | 2015-02-17 | Cirrus Logic, Inc. | MIC covering detection in personal audio devices |
US9325821B1 (en) * | 2011-09-30 | 2016-04-26 | Cirrus Logic, Inc. | Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling |
US8892046B2 (en) * | 2012-03-29 | 2014-11-18 | Bose Corporation | Automobile communication system |
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 |
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 |
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 |
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) |
CN102724152B (zh) * | 2012-07-12 | 2014-10-08 | 西南交通大学 | 基于Laguerre结构的多项式自适应有源噪声对消方法 |
US9129586B2 (en) | 2012-09-10 | 2015-09-08 | Apple Inc. | Prevention of ANC instability in the presence of low frequency noise |
US9532139B1 (en) | 2012-09-14 | 2016-12-27 | Cirrus Logic, Inc. | Dual-microphone frequency amplitude response self-calibration |
US9031248B2 (en) | 2013-01-18 | 2015-05-12 | Bose Corporation | Vehicle engine sound extraction and reproduction |
US9959852B2 (en) | 2013-01-18 | 2018-05-01 | Bose Corporation | Vehicle engine sound extraction |
US9107010B2 (en) | 2013-02-08 | 2015-08-11 | Cirrus Logic, Inc. | Ambient noise root mean square (RMS) detector |
US9167067B2 (en) | 2013-02-14 | 2015-10-20 | Bose Corporation | Motor vehicle noise management |
US9369798B1 (en) | 2013-03-12 | 2016-06-14 | Cirrus Logic, Inc. | Internal dynamic range control in an adaptive noise cancellation (ANC) system |
US9118987B2 (en) * | 2013-03-12 | 2015-08-25 | Bose Corporation | Motor vehicle active noise reduction |
US9831898B2 (en) * | 2013-03-13 | 2017-11-28 | Analog Devices Global | Radio frequency transmitter noise cancellation |
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 |
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 |
US9467776B2 (en) | 2013-03-15 | 2016-10-11 | Cirrus Logic, Inc. | Monitoring of speaker impedance to detect pressure applied between mobile device and ear |
US9502020B1 (en) | 2013-03-15 | 2016-11-22 | 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 |
US9344796B2 (en) | 2013-03-25 | 2016-05-17 | Bose Corporation | Active reduction of harmonic noise from multiple noise sources |
US9191739B2 (en) * | 2013-03-25 | 2015-11-17 | Bose Corporation | Active reduction of harmonic noise from multiple rotating devices |
US9177542B2 (en) * | 2013-03-29 | 2015-11-03 | Bose Corporation | Motor vehicle adaptive feed-forward noise reduction |
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 |
US9460701B2 (en) | 2013-04-17 | 2016-10-04 | Cirrus Logic, Inc. | Systems and methods for adaptive noise cancellation by biasing anti-noise level |
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 |
US9264808B2 (en) | 2013-06-14 | 2016-02-16 | Cirrus Logic, Inc. | Systems and methods for detection and cancellation of narrow-band noise |
US9837066B2 (en) | 2013-07-28 | 2017-12-05 | Light Speed Aviation, Inc. | System and method for adaptive active noise reduction |
US9392364B1 (en) | 2013-08-15 | 2016-07-12 | Cirrus Logic, Inc. | Virtual microphone for adaptive noise cancellation in personal audio devices |
US9269344B2 (en) | 2013-09-03 | 2016-02-23 | Bose Corporation | Engine harmonic cancellation system afterglow mitigation |
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 |
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 |
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 |
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 |
EP3178084B1 (en) * | 2014-09-24 | 2018-10-03 | Bose Corporation | Active reduction of harmonic noise from multiple noise sources |
US9240819B1 (en) * | 2014-10-02 | 2016-01-19 | Bose Corporation | Self-tuning transfer function for adaptive filtering |
US9552805B2 (en) | 2014-12-19 | 2017-01-24 | Cirrus Logic, Inc. | Systems and methods for performance and stability control for feedback adaptive noise cancellation |
US9508336B1 (en) | 2015-06-25 | 2016-11-29 | Bose Corporation | Transitioning between arrayed and in-phase speaker configurations for active noise reduction |
US9640169B2 (en) | 2015-06-25 | 2017-05-02 | Bose Corporation | Arraying speakers for a uniform driver field |
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 |
EP3182407B1 (en) * | 2015-12-17 | 2020-03-11 | Harman Becker Automotive Systems GmbH | Active noise control by adaptive noise filtering |
DE102016100542A1 (de) * | 2016-01-14 | 2017-07-20 | Faurecia Emissions Control Technologies, Germany Gmbh | Verfahren zur Erzeugung eines Ansteuerungssignals für einen in einem Motorfahrzeug angeordneten Lautsprecher sowie Abgasanlage für einen Motor und Soundsystem für eine Fahrgastzelle |
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 |
JP2017197021A (ja) * | 2016-04-27 | 2017-11-02 | パナソニックIpマネジメント株式会社 | 能動型騒音低減装置及び能動型騒音低減方法 |
EP3529798A1 (en) * | 2016-10-20 | 2019-08-28 | Harman Becker Automotive Systems GmbH | Noise control |
US10163432B2 (en) * | 2017-02-23 | 2018-12-25 | 2236008 Ontario Inc. | Active noise control using variable step-size adaptation |
KR20180103476A (ko) | 2017-03-10 | 2018-09-19 | 현대자동차주식회사 | 차량 내부의 소음 제어 시스템 및 그 제어 방법 |
SE541331C2 (en) * | 2017-11-30 | 2019-07-09 | Creo Dynamics Ab | Active noise control method and system |
SE1850077A1 (en) | 2018-01-24 | 2019-07-25 | Creo Dynamics Ab | Active noise control method and system using variable actuator and sensor participation |
CN112714932A (zh) | 2018-09-12 | 2021-04-27 | Ask工业有限公司 | 用于生成声学补偿信号的方法和装置 |
US11442089B2 (en) * | 2019-10-09 | 2022-09-13 | Rohde & Schwarz Gmbh & Co. Kg | Apparatus and method for determining a trigger time |
US11564034B2 (en) * | 2020-05-21 | 2023-01-24 | Bose Corporation | Road noise-cancellation system responsive to entertainment audio |
CN113421541B (zh) * | 2021-08-23 | 2021-10-29 | 南京南大电子智慧型服务机器人研究院有限公司 | 一种基于系数平滑的频域有源噪声控制系统 |
GB2613898A (en) * | 2021-12-20 | 2023-06-21 | British Telecomm | Noise cancellation |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4243959A (en) * | 1979-06-21 | 1981-01-06 | Bell Telephone Laboratories, Incorporated | Adaptive filter with tap coefficient leakage |
US5386472A (en) * | 1990-08-10 | 1995-01-31 | General Motors Corporation | Active noise control system |
US5359662A (en) * | 1992-04-29 | 1994-10-25 | General Motors Corporation | Active noise control system |
US5321759A (en) * | 1992-04-29 | 1994-06-14 | General Motors Corporation | Active noise control system for attenuating engine generated noise |
US5222148A (en) * | 1992-04-29 | 1993-06-22 | General Motors Corporation | Active noise control system for attenuating engine generated noise |
US5418857A (en) * | 1993-09-28 | 1995-05-23 | Noise Cancellation Technologies, Inc. | Active control system for noise shaping |
US5689572A (en) * | 1993-12-08 | 1997-11-18 | Hitachi, Ltd. | Method of actively controlling noise, and apparatus thereof |
US5475761A (en) * | 1994-01-31 | 1995-12-12 | Noise Cancellation Technologies, Inc. | Adaptive feedforward and feedback control system |
US5627896A (en) * | 1994-06-18 | 1997-05-06 | Lord Corporation | Active control of noise and vibration |
US5586190A (en) * | 1994-06-23 | 1996-12-17 | Digisonix, Inc. | Active adaptive control system with weight update selective leakage |
JPH08261277A (ja) * | 1995-03-27 | 1996-10-08 | Mazda Motor Corp | 車両の振動低減装置 |
US5715320A (en) * | 1995-08-21 | 1998-02-03 | Digisonix, Inc. | Active adaptive selective control system |
US5694474A (en) * | 1995-09-18 | 1997-12-02 | Interval Research Corporation | Adaptive filter for signal processing and method therefor |
US5838599A (en) * | 1996-09-13 | 1998-11-17 | Measurex Corporation | Method and apparatus for nonlinear exponential filtering of signals |
US5996096A (en) * | 1996-11-15 | 1999-11-30 | International Business Machines Corporation | Dynamic redundancy for random access memory assemblies |
US5805457A (en) * | 1996-12-06 | 1998-09-08 | Sanders; David L. | System for analyzing sound quality in automobiles using musical intervals |
US6418227B1 (en) * | 1996-12-17 | 2002-07-09 | Texas Instruments Incorporated | Active noise control system and method for on-line feedback path modeling |
JP3216704B2 (ja) * | 1997-08-01 | 2001-10-09 | 日本電気株式会社 | 適応アレイ装置 |
US6243829B1 (en) * | 1998-05-27 | 2001-06-05 | Hewlett-Packard Company | Memory controller supporting redundant synchronous memories |
AU2725201A (en) * | 1999-11-29 | 2001-06-04 | Syfx | Signal processing system and method |
US6658285B2 (en) * | 2000-03-15 | 2003-12-02 | Resolution Medical, Inc. | Continuous localization and guided treatment of cardiac arrhythmias |
CA2401672A1 (en) | 2000-03-28 | 2001-10-04 | Tellabs Operations, Inc. | Perceptual spectral weighting of frequency bands for adaptive noise cancellation |
US6741707B2 (en) * | 2001-06-22 | 2004-05-25 | Trustees Of Dartmouth College | Method for tuning an adaptive leaky LMS filter |
CA2354808A1 (en) * | 2001-08-07 | 2003-02-07 | King Tam | Sub-band adaptive signal processing in an oversampled filterbank |
US7409616B1 (en) * | 2003-06-27 | 2008-08-05 | Cypress Semiconductor Corp. | Built in self test system and method for detecting and correcting cycle slip within a deserializer |
US20050147258A1 (en) * | 2003-12-24 | 2005-07-07 | Ville Myllyla | Method for adjusting adaptation control of adaptive interference canceller |
US7426464B2 (en) * | 2004-07-15 | 2008-09-16 | Bitwave Pte Ltd. | Signal processing apparatus and method for reducing noise and interference in speech communication and speech recognition |
DE602005018023D1 (de) * | 2005-04-29 | 2010-01-14 | Harman Becker Automotive Sys | Kompensation des Echos und der Rückkopplung |
US20070297619A1 (en) | 2006-06-26 | 2007-12-27 | Bose Corporation*Ewc* | Active noise reduction engine speed determining |
US8194873B2 (en) * | 2006-06-26 | 2012-06-05 | Davis Pan | Active noise reduction adaptive filter leakage adjusting |
US8483413B2 (en) * | 2007-05-04 | 2013-07-09 | Bose Corporation | System and method for directionally radiating sound |
US9560448B2 (en) * | 2007-05-04 | 2017-01-31 | Bose Corporation | System and method for directionally radiating sound |
US8204242B2 (en) | 2008-02-29 | 2012-06-19 | Bose Corporation | Active noise reduction adaptive filter leakage adjusting |
US8306240B2 (en) * | 2008-10-20 | 2012-11-06 | Bose Corporation | Active noise reduction adaptive filter adaptation rate adjusting |
US8355512B2 (en) | 2008-10-20 | 2013-01-15 | Bose Corporation | Active noise reduction adaptive filter leakage adjusting |
US8335318B2 (en) * | 2009-03-20 | 2012-12-18 | Bose Corporation | Active noise reduction adaptive filtering |
-
2008
- 2008-10-20 US US12/254,037 patent/US8355512B2/en active Active
-
2009
- 2009-09-22 EP EP09792824.6A patent/EP2351019B1/en active Active
- 2009-09-22 JP JP2011532120A patent/JP5342006B2/ja active Active
- 2009-09-22 WO PCT/US2009/057787 patent/WO2010047907A1/en active Application Filing
- 2009-09-22 CN CN2009801408091A patent/CN102187387A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2010047907A1 (en) | 2010-04-29 |
CN102187387A (zh) | 2011-09-14 |
JP2012506069A (ja) | 2012-03-08 |
US20100098263A1 (en) | 2010-04-22 |
EP2351019B1 (en) | 2016-03-02 |
EP2351019A1 (en) | 2011-08-03 |
US8355512B2 (en) | 2013-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5342006B2 (ja) | アクティブ雑音低減フィルタの漏れ係数の調節 | |
JP5342007B2 (ja) | アクティブ雑音低減適応フィルタの適応レート調節 | |
JP4995276B2 (ja) | エンジン速度決定アクティブ雑音減少 | |
JP5005765B2 (ja) | アクティブノイズ除去適応フィルタの漏洩調整 | |
US8204242B2 (en) | Active noise reduction adaptive filter leakage adjusting | |
EP3367378B1 (en) | Active noise control using variable step-size adaptation | |
WO2019210983A1 (en) | Feedfoward active noise control | |
JP2021517986A (ja) | フィードフォワードアクティブノイズコントロール |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130115 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130329 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130709 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130808 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5342006 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |