JP6110557B2 - 複数の回転装置からの高調波ノイズの能動低減 - Google Patents
複数の回転装置からの高調波ノイズの能動低減 Download PDFInfo
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- 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
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- 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
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- 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
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- G—PHYSICS
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- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
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- G10K2210/301—Computational
- G10K2210/3028—Filtering, e.g. Kalman filters or special analogue or digital filters
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
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Description
12 キャビン
14 出力変換器
16 キャビン伝達関数
18 入力エラー変換器
20 適応フィルタ
24 調波周波数コンピュータ
25 高調波正弦波発生器
26 モデル化されたキャビン伝達関数
27 乗算
31 調波周波数コンピュータ
32 高調波正弦波発生器
33 モデル化されたキャビン伝達関数
36 適応フィルタ
38 乗算
42 重複検出器
44 エンジンノイズキャンセラ
46 推進軸ノイズキャンセラ
Claims (15)
- 回転装置の回転速度に関連した周波数を有する複数の入力信号を取り込み、1つまたは複数のスピーカにノイズとほぼ同じ周波数であり、実質的に正反対の位相の音を発生させることによって、複数の前記回転装置によって生じた前記ノイズを低減するためのシステムであって、
各ノイズキャンセラが、入力信号から調波周波数を計算し、前記調波周波数を、出力正弦波を生成する高調波正弦波発生器に提供する調波周波数コンピュータ、および正弦波を使用して1つまたは複数の変換器を駆動するのに使用されるノイズ低減信号を作り出し、前記変換器の出力は前記回転装置によって生じたノイズを低減するように向けられている、適応フィルタを備える、複数のノイズキャンセラと、
前記調波周波数を比較し、前記調波周波数の近接性に基づいて、前記適応フィルタのうちの1つまたは複数の動作を改変する重複検出器とを備え、
前記重複検出器が、適応フィルタの1つまたは複数の可変パラメータの値を変更することによって前記適応フィルタのうちの1つまたは複数の動作を改変し、
前記可変パラメータが、前記適応フィルタの適応ステップサイズを含み、前記適応ステップサイズが、前記周波数の近接性が高いとき、減少される、システム。 - 前記適応ステップサイズが、2つの入力信号周波数がおよそ一致するとき、約2分の1だけ減少される、請求項1に記載のシステム。
- 前記周波数の近接性とその結果生じる前記適応フィルタの可変パラメータの値の変化との関係を記憶するコンピュータメモリをさらに備える、請求項1に記載のシステム。
- 前記変換器の出力が、自動車両のキャビン中に向けられる、請求項1に記載のシステム。
- 前記回転装置が、車両エンジンと車両推進軸とを備える、請求項4に記載のシステム。
- 回転装置の回転速度に関連した周波数を有する複数の入力信号を取り込み、1つまたは複数のスピーカにノイズとほぼ同じ周波数であり、実質的に正反対の位相の音を発生させることによって自動車両の複数の前記回転装置によって生じた前記ノイズを低減するためのシステムであって、
各ノイズキャンセラが、入力信号から調波周波数を計算し、前記調波周波数を、出力正弦波を生成する高調波正弦波発生器に提供する調波周波数コンピュータ、および正弦波を使用して1つまたは複数の変換器を駆動するのに使用されるノイズ低減信号を作り出し、前記変換器の出力は前記回転装置によって生じた車両キャビン内のノイズを低減するように向けられている、適応フィルタを備える、複数のノイズキャンセラと、
前記調波周波数を比較し、前記調波周波数の近接性に基づいて、前記適応フィルタのうちの1つまたは複数の動作を改変する重複検出器であって、前記適応フィルタの1つまたは複数の可変パラメータの値を変更することによって前記適応フィルタのうちの1つまたは複数の動作を改変し、前記可変パラメータが、前記適応フィルタの適応ステップサイズを含み、前記適応ステップサイズが、前記周波数の近接性が高いとき、減少される、重複検出器と、
前記周波数の近接性と、その結果生じる前記適応フィルタの可変パラメータの値の変化との関係を記憶するコンピュータメモリとを備えるシステム。 - 前記回転装置が、車両エンジンと車両推進軸とを備える、請求項6に記載のシステム。
- 複数の回転装置によって生じたノイズを低減するようになされた能動ノイズ低減システムを動作させるための方法であって、前記回転装置の回転速度に関連した周波数を有するシステム入力信号があり、前記能動ノイズ低減システムが、前記入力信号のそれぞれに関連付けられた別々の適応フィルタを備え、前記適応フィルタが、それらの出力に影響するチューニングパラメータを有し、前記適応フィルタが、1つまたは複数の変換器を駆動するのに使用されるノイズ低減信号を出力し、前記変換器の出力は前記回転装置によって生じたノイズを低減するように向けられており、
前記入力信号の前記周波数の近接性を決定するステップと、
前記入力信号の前記周波数の前記決定された近接性に基づいて、1つまたは複数の可変パラメータの値を変更するステップとを含み、
前記可変パラメータが、前記適応フィルタの適応ステップサイズを含み、前記適応ステップサイズが、前記周波数の近接性が高いとき、減少される、方法。 - 前記周波数の近接性と、その結果生じる前記適応フィルタの可変パラメータの値の変化との関係をコンピュータメモリに記憶させるステップをさらに含む、請求項8に記載の方法。
- 前記適応ステップサイズが、2つの入力信号周波数がおよそ一致するとき、約2分の1だけ減少される、請求項8に記載の方法。
- 前記可変パラメータの値が、計算され、前記適応フィルタに提供される、請求項8に記載の方法。
- 前記周波数の近接性が、前記可変パラメータの値の計算に影響するように制御信号を提供する重複検出器によって決定される、請求項11に記載の方法。
- 前記変換器の出力が、自動車両のキャビン中に向けられる、請求項8に記載の方法。
- 前記回転装置が、車両エンジンと、車両推進軸とを備える、請求項13に記載の方法。
- 前記可変パラメータが、前記適応フィルタの適応ステップサイズを含み、前記適応ステップサイズが、前記周波数の近接性が高いとき、減少され、前記可変パラメータの値が、計算され、前記適応フィルタに提供され、前記周波数の近接性が、前記可変パラメータの値の計算に影響するように制御信号を提供する重複検出器によって決定され、前記周波数の近接性と、その結果生じる前記適応フィルタの可変パラメータの値の変化との関係をコンピュータメモリに記憶させるステップをさらに含む、請求項14に記載の方法。
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US13/849,856 | 2013-03-25 | ||
US13/849,856 US9191739B2 (en) | 2013-03-25 | 2013-03-25 | Active reduction of harmonic noise from multiple rotating devices |
PCT/US2014/019354 WO2014158700A1 (en) | 2013-03-25 | 2014-02-28 | Active reduction of harmonic noise from multiple rotating devices |
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US9737533B2 (en) | 2009-05-12 | 2017-08-22 | Janssen Pharmaceuticals. Inc. | 1,2,4-triazolo [4,3-A] pyridine derivatives and their use for the treatment of prevention of neurological and psychiatric disorders |
US10071095B2 (en) | 2009-05-12 | 2018-09-11 | Janssen Pharmaceuticals, Inc. | 1,2,4-triazolo [4,3-A] pyridine derivatives and their use for the treatment of neurological and psychiatric disorders |
US10106542B2 (en) | 2013-06-04 | 2018-10-23 | Janssen Pharmaceutica Nv | Substituted 6,7-dihydropyrazolo[1,5-a]pyrazines as negative allosteric modulators of mGluR2 receptors |
US9708315B2 (en) | 2013-09-06 | 2017-07-18 | Janssen Pharmaceutica Nv | 1,2,4-triazolo[4,3-a]pyridine compounds and their use as positive allosteric modulators of MGLUR2 receptors |
US10537573B2 (en) | 2014-01-21 | 2020-01-21 | Janssen Pharmaceutica Nv | Combinations comprising positive allosteric modulators or orthosteric agonists of metabotropic glutamatergic receptor subtype 2 and their use |
US11103506B2 (en) | 2014-01-21 | 2021-08-31 | Janssen Pharmaceutica Nv | Combinations comprising positive allosteric modulators or orthosteric agonists of metabotropic glutamatergic receptor subtype 2 and their use |
US11369606B2 (en) | 2014-01-21 | 2022-06-28 | Janssen Pharmaceutica Nv | Combinations comprising positive allosteric modulators or orthosteric agonists of metabotropic glutamatergic receptor subtype 2 and their use |
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EP2939233B1 (en) | 2016-05-25 |
CN105051810B (zh) | 2018-10-19 |
JP2016521035A (ja) | 2016-07-14 |
US20140286499A1 (en) | 2014-09-25 |
US9191739B2 (en) | 2015-11-17 |
WO2014158700A1 (en) | 2014-10-02 |
CN105051810A (zh) | 2015-11-11 |
EP2939233A1 (en) | 2015-11-04 |
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