A PIEZOELECTRIC SOUNDER DEVICE
    2.
    发明公开

    公开(公告)号:EP4439547A1

    公开(公告)日:2024-10-02

    申请号:EP23165991.3

    申请日:2023-03-31

    发明人: WINSHIP, Mark

    IPC分类号: G10K9/122

    CPC分类号: G10K9/122

    摘要: A piezo sounder device 100 comprising a piezo sounder 110 and a controller 120, wherein the controller 120 is configured, upon activation of the piezo sounder device 100, to drive the piezo sounder 110 at: a first frequency substantially corresponding to a resonant frequency of the piezo sounder 110 at a first operational temperature; and a second frequency substantially corresponding to a resonant frequency of the piezo sounder 110 at a second operational temperature. Also disclosed is a method 200 of manufacturing the device 100, and a method 300 of emitting a sound 400, 500.