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1. WO2014128856 - 能動振動騒音制御装置

公開番号 WO/2014/128856
公開日 28.08.2014
国際出願番号 PCT/JP2013/054147
国際出願日 20.02.2013
IPC
G10K 11/178 2006.01
G物理学
10楽器;音響
K音を発生する装置;騒音または他の音響波を防ぎ,または減衰させるための方法または装置一般;他に分類されない音響
11音を伝達し,導きまたは指向させるための方法または装置一般;騒音または他の音響波を防ぎ,または減衰させるための方法または装置一般
16騒音または他の音響波を防ぎ,または減衰させるための方法または装置一般
175干渉効果を用いるもの;音をマスキングするもの
178電気音響的に元の音響波を逆位相で再発生することによるもの
CPC
G10K 11/1781
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1781characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
G10K 11/17817
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1781characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
17813characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
17817between the output signals and the error signals, i.e. secondary path
G10K 11/17825
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1781characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
17821characterised by the analysis of the input signals only
17825Error signals
G10K 11/17835
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1783handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
17833by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels
17835using detection of abnormal input signals
G10K 11/17854
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1785Methods, e.g. algorithms; Devices
17853of the filter
17854the filter being an adaptive filter
G10K 11/17881
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods 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
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
175using interference effects; Masking sound
178by electro-acoustically regenerating the original acoustic waves in anti-phase
1787General system configurations
17879using both a reference signal and an error signal
17881the reference signal being an acoustic signal, e.g. recorded with a microphone
出願人
  • 三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP]/[JP] (AllExceptUS)
  • 矢野 敦仁 YANO, Atsuyoshi (US)
発明者
  • 矢野 敦仁 YANO, Atsuyoshi
代理人
  • 田澤 英昭 TAZAWA, Hideaki
優先権情報
公開言語 (言語コード) 日本語 (JA)
出願言語 (言語コード) 日本語 (JA)
指定国 (国コード)
発明の名称
(EN) ACTIVE VIBRATION/NOISE CONTROL DEVICE
(FR) DISPOSITIF DE CONTRÔLE ACTIF DE BRUIT DE VIBRATION
(JA) 能動振動騒音制御装置
要約
(EN)
Provided is an active vibration/noise control device in which a sound source signal that is set on the basis of a control frequency specified in accordance with a vibration noise source that emits a vibration noise is input to a control signal filter (2) and a control signal is output. A filter coefficient update unit (4) updates a coefficient of the control signal filter (2) on the basis of the sound source signal and an error signal. On the basis of the control frequency and the error signal, a signal-to-noise ratio measurement unit (5) outputs a signal-to-noise ratio that is determined by vibration noise and noise that is included in the error signal. An update control unit (6) adjusts the update step width of the filter coefficient update unit (4) on the basis of the signal-to-noise ratio.
(FR)
Selon l'invention, un filtre de signaux de commande (2) reçoit en entrée des signaux de source sonore qui sont déterminés sur la base d'une fréquence de commande spécifiée selon une source sonore de bruit de vibration générant un bruit de vibration, et émet en sortie des signaux de commande. Une unité de modification de coefficient de filtre (4) modifie le coefficient du filtre de signaux de commande (2) sur la base des signaux de source sonore et de signaux d'erreur. Une unité de mesure de rapport de perturbation vis-à-vis de signaux (5) émet en sortie un rapport de perturbation vis-à-vis de signaux établi selon une perturbation et le bruit de vibration contenu dans les signaux d'erreur, sur la base de la fréquence de commande et des signaux d'erreur. Une unité de commande de modification (6) régule une amplitude de pas de modification de l'unité de modification de coefficient de filtre (4) sur la base du rapport de perturbation vis-à-vis de signaux.
(JA)
 制御信号フィルタ2は、振動騒音を発する振動騒音源に応じて特定される制御周波数に基づいて定められた音源信号が入力され、制御信号を出力する。フィルタ係数更新部4は、音源信号と誤差信号に基づいて制御信号フィルタ2の係数を更新する。信号対外乱比計測部5は、制御周波数と誤差信号に基づいて誤差信号に含まれる振動騒音と外乱によって決定される信号対外乱比を出力する。更新制御部6は、信号対外乱比に基づいてフィルタ係数更新部4の更新ステップ幅を調整する。
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