Invention Grant
- Patent Title: Sound production device, sound-production-device equipped vehicle, and sound production method
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Application No.: US17652745Application Date: 2022-02-28
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Publication No.: US11676569B2Publication Date: 2023-06-13
- Inventor: Yu Miyahara , Yuta Tsukada
- Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Applicant Address: JP Toyota
- Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Toyota
- Agency: Hunton Andrews Kurth LLP
- Priority: JP 2021032698 2021.03.02
- Main IPC: G10K11/16
- IPC: G10K11/16 ; G10K11/178 ; G07C5/08

Abstract:
A sound production device includes memories, processors, a rotation speed correlation value acquisition device configured to acquire a rotation speed correlation value of a rotating body, and a speaker. A noise order sound has a characteristic in which a sound pressure of the noise order sound reaches a maximum sound pressure in a first range of the rotation speed correlation value, and the sound pressure becomes smaller than the maximum sound pressure in second ranges adjacent to both sides the first range. When the rotation speed correlation value falls within the first range, the processors do not output a dummy noise. When the rotation speed correlation value falls within either of the second ranges, the processors output the dummy noise.
Public/Granted literature
- US20220284880A1 SOUND PRODUCTION DEVICE, SOUND-PRODUCTION-DEVICE EQUIPPED VEHICLE, AND SOUND PRODUCTION METHOD Public/Granted day:2022-09-08
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