To provide a vehicle sound generation device that outputs a sound that makes it easy for a driver to recognize a change in a vehicle state.SOLUTION: A vehicle sound generation device 1 includes: a sound control device 10 that generates a synthetic sound signal Ss representing a synthetic sound SC including one or more element sounds having one or more frequencies corresponding to the number of rotations of an electric motor; and a speaker 20 that outputs the synthetic sound SC based on the synthetic sound signal Ss. The sound pressure of the synthetic sound SC includes a reference sound pressure component and a fluctuating sound pressure component. The reference sound pressure component is set so that the magnitude of the reference sound pressure component increases as the number of rotations increases. The fluctuating sound pressure component is set so that the magnitude of the fluctuating sound pressure component fluctuates within a predetermined amplitude with a predetermined increase amount of the number of rotations as a cycle, as the number of rotations increases.SELECTED DRAWING: Figure 2
【課題】ドライバに対して車両状態の変化を認識し易いように音を発生する車両用音生成装置を提供する。【解決手段】車両用音生成装置1は、電動モータの回転数に応じた1又は複数の周波数を有する1又は複数の要素音を含む合成音SCを表す合成音信号Ssを生成する音制御装置10と、合成音信号Ssに基づいて、合成音SCを出力するスピーカ20と、を備える。合成音SCの音圧は、基準音圧成分と変動音圧成分を含む。基準音圧成分は、回転数の増加に応じて、基準音圧成分の大きさが増加するように設定される。変動音圧成分は、回転数の増加に応じて、変動音圧成分の大きさが回転数の所定の増加量を周期として所定の振幅内で変動するように設定されている。【選択図】図2
VEHICLE SOUND GENERATION DEVICE
車両用音生成装置
2021-08-05
Patent
Electronic Resource
Japanese
SOUND GENERATION DEVICE, SOUND GENERATION DEVICE-MOUNTED VEHICLE, AND SOUND GENERATION METHOD
European Patent Office | 2022
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