To provide an active noise reduction device that can inhibit the occurrence of a noise.SOLUTION: An active noise reduction device 10 reduces a noise in the interior space of a vehicle 50. The active noise reduction device 10 includes a control unit 20 that performs control to reduce a signal level of a cancellation signal when a signal level of a reference signal being input is lower than a threshold, and a threshold control unit 21 that changes a threshold based on a signal level of an error signal or information on the vehicle 50.SELECTED DRAWING: Figure 2
【課題】異音の発生を抑制することができる能動騒音低減装置を提供する。【解決手段】能動騒音低減装置10は、車両50の車室内の騒音を低減する。能動騒音低減装置10は、入力された参照信号の信号レベルが閾値よりも低い場合に、キャンセル信号の信号レベルを低下させる制御を行う制御部20と、誤差信号の信号レベル、または、車両50に関する情報に基づいて閾値を変更する閾値制御部21とを備える。【選択図】図2
ACTIVE NOISE REDUCTION DEVICE, VEHICLE AND ACTIVE NOISE REDUCTION METHOD
能動騒音低減装置、車両、及び、能動騒音低減方法
30.05.2019
Patent
Elektronische Ressource
Japanisch
ACTIVE NOISE REDUCTION DEVICE, ACTIVE NOISE REDUCTION SYSTEM AND ACTIVE NOISE REDUCTION METHOD
Europäisches Patentamt | 2024
|ACTIVE NOISE REDUCTION DEVICE AND ACTIVE NOISE REDUCTION METHOD
Europäisches Patentamt | 2021
|Active noise reduction device and active noise reduction method
Europäisches Patentamt | 2021
|ACTIVE NOISE REDUCTION DEVICE AND ACTIVE NOISE REDUCTION METHOD
Europäisches Patentamt | 2018
|ACTIVE NOISE REDUCTION DEVICE AND ACTIVE NOISE REDUCTION METHOD
Europäisches Patentamt | 2017
|