Acoustic transducers with a low pressure zone and diaphragms having a pressure sensor
US11297406B2 · kind B2 · utility
1Cited by
1References
20Claims
0Family size
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Key dates
| Filing date | Dec 18, 2020 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Dec 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Acoustic transducers for generating electrical signals in response to acoustic signals are disclosed. In some embodiments, an acoustic transducer includes an at least partially evacuated hermetically sealed cavity defined in part by a first diaphragm. The acoustic transducer also includes a backplate disposed at least partially within the cavity. The cavity having a pressure lower than atmospheric pressure. The acoustic transducer further includes a pressure sensor coupled to the backplate and configured to sense the pressure in the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.