To solve the problem that continuous listening cannot be performed since a sound transmission route is interfered by a baggage and a movement of a listener due to a directivity of a super-directivity speaker of an on-vehicle audio device.SOLUTION: An on-vehicle audio device includes: occupant detection means 210 for detecting features and behaviors of an occupant; seat information acquisition means 600 for acquiring a seat position; depth estimation means 240 for estimating a depth in a vehicle; reflection position selection means 310 for selecting a reflection position of an ultrasonic wave; sound source recording means 520 for recording a sound source signal; a speaker part 800 for converting the sound source signal into an ultrasonic wave so as to perform irradiation; means 250 for calculating in-vehicle position information of existence of occupant on the basis of features of occupant detected by the occupant detection means and information to be obtained by the seat information acquisition means or the depth estimation means; and sound wave transmission route calculation means 320 for calculating a sound wave transmission route for sound irradiation on the basis of the in-vehicle position information, the reflection position, and a position of the speaker part. The sound source signal is converted into an ultrasonic wave in accordance with the sound wave transmission route, so as to perform irradiation to an occupant.SELECTED DRAWING: Figure 3
【課題】車載オーディオ装置の超指向性スピーカーの指向性により荷物や聴講者の動きによって音の伝達経路が妨げられ継続した聴講ができない。【解決手段】乗員の特徴・動作を検出する乗員検出手段210と、座席位置を取得する座席情報取得手段600と、車両内の奥行を推定する奥行推定手段240と、超音波の反射位置を選択する反射位置選択手段310と、音源信号を記録する音源記録手段520と、音源信号を超音波に変換して照射するスピーカー部800と、乗員検出手段によって検出した乗員の特徴と座席情報取得手段または奥行推定手段から得られる情報を基に乗員が存在する車両内位置情報を算出する手段250と、車両内位置情報と反射位置とスピーカー部の位置から、音を照射する音波伝達経路を算出する音波伝達経路計算手段320を備え、音波伝達経路に従って音源信号を超音波に変換して乗員へ照射する。【選択図】図3
ON-VEHICLE AUDIO DEVICE
車載オーディオ装置
2019-06-24
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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