To provide a noise reduction device capable of obtaining a noise reduction effect without unstable control even when a position relationship between a speaker and a microphone is changed.SOLUTION: A noise reduction device 10 reduces noise in a second position by cancel sound outputted from a first position. The noise reduction device 10 comprises a correction section 14 for correcting a first transmission characteristic with the first position and the second position having a reference position relationship to be a second transmission characteristic in accordance with a signal showing a position relationship between the first position and the second position, and correcting a reference signal on the basis of the second transmission characteristic.SELECTED DRAWING: Figure 4
【課題】スピーカ及びマイクの位置関係に変化が生じた場合であっても制御が不安定になることなく騒音低減効果を得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、第1位置から出力される打ち消し音によって第2位置における騒音を低減する。騒音低減装置10は、第1位置及び第2位置の位置関係を示す信号に応じて第1位置及び第2位置が基準位置関係となる場合の第1伝達特性を第2伝達特性に補正し、第2伝達特性に基づいて基準信号を補正する補正部14を備える。【選択図】図4
NOISE REDUCTION DEVICE, MOBILE DEVICE AND NOISE REDUCTION METHOD
騒音低減装置、移動体装置、及び、騒音低減方法
04.04.2019
Patent
Elektronische Ressource
Japanisch
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