To provide a noise reduction device which can prevent noise control in a space from becoming unstable, when transfer characteristics in the space are varied.SOLUTION: A noise reduction device 10 reduces noise in a space 56 inside a movable body device. The noise reduction device 10 comprises: a state signal input terminal 11d into which a state signal indicating a state of a movable part prepared in the movable body device is inputted; and a control unit 17 which performs mutually different controls related to the output of a canceling sound, in accordance with whether or not the state signal includes information showing moving amounts of the movable part, when it is indicated that the movable part is not in a prescribed standard state due to the inputted state signal.SELECTED DRAWING: Figure 4A
【課題】空間における伝達特性に変化が生じた場合に、当該空間における騒音制御が不安定になることを抑制することができる騒音低減装置を提供する。【解決手段】騒音低減装置10は、移動体装置の内部の空間56における騒音を低減する騒音低減装置である。騒音低減装置10は、移動体装置に設けられた可動部の状態を示す状態信号が入力される状態信号入力端子11dと、入力された状態信号により可動部が所定の基準状態でないことが示される場合に、当該状態信号に可動部の移動量を示す情報が含まれるか否かに応じて、キャンセル音の出力に関する互いに異なる制御を行う制御部17とを備える。【選択図】図4A
NOISE REDUCTION DEVICE, MOVABLE BODY DEVICE AND NOISE REDUCTION METHOD
騒音低減装置、移動体装置、及び、騒音低減方法
2021-05-27
Patent
Electronic Resource
Japanese
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