PROBLEM TO BE SOLVED: To achieve suppression of howling in a cabin.SOLUTION: A howling suppression device 100, provided at the front part of a cabin R having a front seat and a rear seat, includes: a second microphone 12 converting collected sound into a second signal M2 for output; a third speaker 23 provided at the rear part of the cabin R; a second pitch conversion part P2 which generates a second conversion sound signal p2a by applying, to a second signal M2, pitch conversion processing for shifting a pitch by a second pitch; and a second drive part D2 for driving a third speaker 23 on the basis of the second conversion sound signal p2a.SELECTED DRAWING: Figure 3
【課題】車室においてハウリングを抑圧する。【解決手段】ハウリング抑圧装置100は、前部座席と後部座席とを備えた車室R前部に設けられ、集音した音を第2信号M2に変換して出力する第2マイク12と、車室Rの後部に設けられた第3スピーカ23と、第2ピッチだけピッチをシフトさせるピッチ変換処理を第2信号M2に施して第2変換音信号p2aを生成する第2ピッチ変換部P2と、第2変換音信号p2aに基づいて第3スピーカ23を駆動する第2駆動部D2とを備える。【選択図】図3
HOWLING SUPPRESSION DEVICE
ハウリング抑圧装置
2018-06-21
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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