发明公开
- 专利标题: MICRO-SPEAKER DEVICE
-
申请号: US18609732申请日: 2024-03-19
-
公开(公告)号: US20240323591A1公开(公告)日: 2024-09-26
- 发明人: Christian Bretthauer
- 申请人: Infineon Technologies AG
- 申请人地址: DE Neubiberg
- 专利权人: Infineon Technologies AG
- 当前专利权人: Infineon Technologies AG
- 当前专利权人地址: DE Neubiberg
- 优先权: EP 163803 2023.03.23
- 主分类号: H04R1/28
- IPC分类号: H04R1/28 ; H04R1/02 ; H04R3/04 ; H04R17/00
摘要:
A speaker device comprises a housing having an acoustic aperture, a transducer element in the housing configured to receive a first actuation signal and to generate an acoustic output signal. The speaker device comprises a shutter element in the housing configured to receive a second actuation signal and arranged laterally offset to the transducer in the housing. The shutter element is arranged in an acoustic path between the transducer element and the acoustic aperture and comprises a shutter portion movable in opposite directions in response to the second actuation signal. A controller provides the first actuation signal to the transducer element, while the first actuation signal has an ultrasonic signal component modulated with an audio signal component. The controller provides the second actuation signal to the shutter element that has half the frequency of the ultrasonic signal component.
信息查询
IPC分类: