JP2006065324A - 2次元エネルギー密度センサを使用するエネルギー密度制御システム - Google Patents
2次元エネルギー密度センサを使用するエネルギー密度制御システム Download PDFInfo
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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
- G10K11/17857—Geometric disposition, e.g. placement of microphones
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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
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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
- G10K11/1781—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
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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
- G10K11/1787—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
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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
- G10K11/1787—General system configurations
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
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- Acoustics & Sound (AREA)
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- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
【解決手段】方法は、少なくとも1つの基準信号(105)を受信するステップと、2つ以下の実質的に直角に配置された音響センサの対(330)から圧力信号を受信するステップであって、音響センサの1つの対はx方向にあり、音響センサの1つの対はy方向にあり、音響センサ(330)は筐体(110)の内面に実質的に平行で近接している平面に配置されることと、圧力信号および基準信号(105)を使用して出力信号を生成し、音響センサ(330)の位置においてエネルギー密度を最小化するステップと、出力信号を音響アクチュエータ(340)に送信するステップと、を備えている。
【選択図】図1
Description
wi(n+1)=wi(n)−μρcvx(n)rvx(n−i)−μρcvy(n)rvy(n−i)−μp(n)rp(n−i)
110 プラント
125 処理ブロック
135 有限インパルス応答フィルタ
310 筐体
340a、340b、340c 音響アクチュエータ
330 2次元センサ
380 加算器
Claims (10)
- 筐体(enclosure)(110)内の雑音を低減する方法であって、
少なくとも1つの基準信号(105)を受信するステップと、
2つ以下の実質的に直角に配置された音響センサの対(330)から圧力信号を受信するステップであって、音響センサの1つの対はx方向にあり、音響センサの1つの対はy方向にあり、前記音響センサは、前記筐体(110)の内面に実質的に平行で近接している平面に配置されることと、
前記音響センサの位置におけるエネルギー密度を最小化するように、出力信号(140)を生成するために前記圧力信号および前記基準信号(105)を使用するステップと、
前記出力信号(140)を音響アクチュエータ(340)に送信するステップと、
を備えたことを特徴とする方法。 - 前記圧力信号を使用するステップは、前記x方向の音響センサの前記対からの前記圧力信号からx方向速度信号を、前記y方向の音響センサの前記対からの前記圧力信号からy方向速度信号を生成するステップ(230)をさらに含むことを特徴とする請求項1に記載の方法。
- 1つまたは複数の前記受信した圧力信号から平均圧力信号を生成するステップをさらに含むことを特徴とする請求項2に記載の方法。
- 前記基準信号(105)に制御フィルタ係数(135)を適用して前記出力信号(140)を生成するステップをさらに含むことを特徴とする請求項1に記載の方法。
- Filterd−X信号を生成するために、前記基準信号(105)にシステム識別フィルタ(320b)を適用するステップをさらに備えたことを特徴とする請求項4に記載の方法。
- 筐体(310)内の雑音を低減するシステムであって、
基準信号(350)と、
音響アクチュエータ(340)と、
2つ以下の実質的に直角に配置された音響センサの対(420、430)を含むセンサ装置(330)であって、音響センサの1つの対(430)はx方向にあり、音響センサの1つの対(420)はy方向にあり、前記音響センサ(420、430)は前記筐体(310)の内面に実質的に平行で近接している平面に配置されることと、
前記基準信号(350)、前記音響アクチュエータ(340)、および前記センサ装置(330)と通信するコントローラ(320)であって、
前記基準信号(350)を受信し、
前記センサ装置(330)からの圧力信号を受信し、
前記センサ装置(330)の位置におけるエネルギー密度を最小化するように、出力信号を生成するために前記圧力信号および前記基準信号(350)を使用し、
前記出力信号を前記音響アクチュエータ(340)に送信するように動作可能なことと、
を備えたことを特徴とするシステム。 - 前記コントローラ(320)は前記x方向の音響センサの前記対(430)からの前記圧力信号からx方向速度信号と、前記y方向の音響センサの前記対(420)からの前記圧力信号からy方向速度信号とを生成するようにさらに動作可能であることを特徴とする請求項6に記載のシステム。
- 前記コントローラ(320)は、1つまたは複数の前記受信した圧力信号から平均圧力信号を生成するようさらに動作可能であることを特徴とする請求項7に記載のシステム。
- 前記コントローラ(320)は、前記出力信号を生成するために前記基準信号(350)に制御フィルタ係数を適用するようさらに動作可能であることを特徴とする請求項6に記載のシステム。
- 前記コントローラ(320)は、前記基準信号(350)にシステム識別フィルタを適用してFilterd−X信号を生成するようさらに動作可能であることを特徴とする請求項9に記載のシステム。
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US10/913,312 | 2004-08-09 | ||
US10/913,312 US7327849B2 (en) | 2004-08-09 | 2004-08-09 | Energy density control system using a two-dimensional energy density sensor |
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JP2006065324A true JP2006065324A (ja) | 2006-03-09 |
JP2006065324A5 JP2006065324A5 (ja) | 2008-09-25 |
JP5336690B2 JP5336690B2 (ja) | 2013-11-06 |
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JP (1) | JP5336690B2 (ja) |
DE (1) | DE102005037034B4 (ja) |
GB (1) | GB2417156B (ja) |
Cited By (1)
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US10909962B2 (en) | 2017-09-15 | 2021-02-02 | Kabushiki Kaisha Toshiba | Noise reduction device, flight vehicle, power generation device, and noise reduction method |
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US8270625B2 (en) * | 2006-12-06 | 2012-09-18 | Brigham Young University | Secondary path modeling for active noise control |
JP5156934B2 (ja) * | 2008-03-07 | 2013-03-06 | 学校法人日本大学 | 音響測定装置 |
JP5093702B2 (ja) * | 2008-06-20 | 2012-12-12 | 学校法人日本大学 | 音響エネルギ計測装置並びにこれを用いた音響性能評価装置及び音響情報計測装置 |
US8638956B2 (en) * | 2009-08-06 | 2014-01-28 | Ken K. Deng | Acoustic velocity microphone using a buoyant object |
US20120079282A1 (en) * | 2010-06-28 | 2012-03-29 | Lionstone Capital Corporation | Seamless end-to-end data obfuscation and encryption |
US10603633B2 (en) * | 2012-02-24 | 2020-03-31 | Corning Incorporated | Honeycomb structure comprising a cement skin composition with crystalline inorganic fibrous material |
WO2013135819A1 (en) * | 2012-03-14 | 2013-09-19 | Bang & Olufsen A/S | A method of applying a combined or hybrid sound -field control strategy |
GB201804129D0 (en) * | 2017-12-15 | 2018-05-02 | Cirrus Logic Int Semiconductor Ltd | Proximity sensing |
CN116094564A (zh) * | 2017-12-29 | 2023-05-09 | 苹果公司 | 频域正交频分复用(ofdm)符号内多rx波束测量和动态rx波束扫描的方法 |
CN108847250B (zh) * | 2018-07-11 | 2020-10-02 | 会听声学科技(北京)有限公司 | 一种定向降噪方法、系统及耳机 |
CN112071298A (zh) * | 2020-09-08 | 2020-12-11 | 珠海格力电器股份有限公司 | 油烟机降噪控制方法、系统及油烟机 |
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GB2417156B (en) | 2008-01-16 |
US20060029233A1 (en) | 2006-02-09 |
DE102005037034A1 (de) | 2006-03-23 |
JP5336690B2 (ja) | 2013-11-06 |
US7327849B2 (en) | 2008-02-05 |
GB2417156A (en) | 2006-02-15 |
GB0515390D0 (en) | 2005-08-31 |
DE102005037034B4 (de) | 2018-10-04 |
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