To provide a technique capable of relaxing a passenger against noise generated in a vehicle.SOLUTION: A sound generation device executes pseudo-noise output processing to output from a speaker pseudo noise including a sound of frequency corresponding to a noise degree sound generated by rotating bodies that a vehicle comprises. The noise degree sound is characterized in having maximum sound pressure in a first range of rotating speed relative values, and sound pressure lower than the maximum sound pressure in a second range above or below the first range. In the pseudo-noise output processing, rotating speed relative values of the rotating bodies are acquired. Then the pseudo noise is not output when a rotating speed relative value belongs to the first range, and the pseudo noise is output when the rotating speed relative value belongs to the second range within a range in which the total value of the sound pressure of the noise degree sound and the output sound pressure of the pseudo noise does not exceed the maximum sound pressure.SELECTED DRAWING: Figure 4

    【課題】車内に発生するノイズによる乗員の不快感を和らげることのできる技術を提供する。【解決手段】音発生装置は、車両が備える回転体から発せられるノイズ次数音に相当する周波数の音を含んだ疑似ノイズをスピーカから出力する疑似ノイズ出力処理を実行する。ノイズ次数音は、回転速度相関値の第一範囲において音圧が最大音圧となり、第一範囲の前後の第二範囲において音圧が最大音圧よりも小さい音圧となる特性を有している。疑似ノイズ出力処理では、回転体の回転速度相関値を取得する。そして、回転速度相関値が第一範囲に属するときに疑似ノイズを出力せず、回転速度相関値が第二範囲に属するときに、ノイズ次数音の音圧と疑似ノイズの出力音圧との合算値が最大音圧を超えない範囲で疑似ノイズを出力する。【選択図】図4


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    Title :

    SOUND GENERATION DEVICE, SOUND GENERATION DEVICE-MOUNTED VEHICLE, AND SOUND GENERATION METHOD


    Additional title:

    音発生装置、音発生装置搭載車両、及び音発生方法


    Contributors:

    Publication date :

    2022-09-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler



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