Method for driving a condenser microphone
US8965008B2 · kind B2 · utility
3Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Mar 4, 2011 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Apr 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for driving a condenser microphone is provided. The condenser microphone comprises a membrane and an electrode constituting a capacity. A polarization voltage is applied between the membrane and the electrode. According to the method, an electrical signal generated by the condenser microphone based on a received acoustic signal causing a deflection of the membrane) is detected, and the polarization voltage is varied in response to the detected electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.