Signal processing method and device of mems microphone and mems microphone
US12207061B2 · kind B2 · utility
0Cited by
3References
17Claims
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Assignee
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Key dates
| Filing date | Dec 16, 2020 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Apr 11, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal processing method and device of a MEMS microphone and a MEMS microphone are disclosed. The method comprises: acquiring a first electrical signal obtained by converting a received optical signal by an optical sensor disposed near a sound hole of the MEMS microphone; acquiring a second electrical signal output by the MEMS microphone; and judging that the second electrical signal is an interference signal when within a substantially overlapping time range, the first electrical signal acquired reaches a preset first threshold value and the second electrical signal acquired meets a preset condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.