Microphone with automatic bias control
US9609432B2 · kind B2 · utility
1Cited by
0References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Sep 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microphone comprising an automatic bias control providing a better signal quality is proposed. The microphone comprises a bias control circuit that can provide two or more voltages to the microphone's capacitor. The bias control circuit increases the voltage if the collapse frequency is low and decreases the voltage if the collapse frequency is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.