To provide an acoustic control device capable of performing appropriate control even when sound field characteristics in a cabin are changed.SOLUTION: An acoustic control device 10 includes: control signal generation sections 24 each of which performs the signal processing of a sound source signal by a control filter W being an adaptive FIR filter, so as to generate a control signal to control a speaker; and control filter updating sections 28 each of which successively performs the adaptive updating of the control filet W so as to allow a difference between sound pressure in a viewing area V and sound pressure in a silent area Q to be a predetermined level.SELECTED DRAWING: Figure 2
【課題】車室内の音場特性が変化した場合であっても適切な制御を行うことができる音響制御装置を提供する。【解決手段】音響制御装置10は、音源信号を、適応FIRフィルタである制御フィルタWにより信号処理をして、スピーカを制御する制御信号を生成する制御信号生成部24と、視聴エリアV内の音圧と静音エリアQ内の音圧との差が所定レベルとなるように制御フィルタWを遂次適応更新する制御フィルタ更新部28と、を有する。【選択図】図2
ACOUSTIC CONTROL DEVICE
音響制御装置
2022-10-03
Patent
Electronic Resource
Japanese
IPC: | H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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