Adaptive amplifier circuitry for microphone array
US7864969B1 · kind B1 · utility
15Cited by
9References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2006 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Aug 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Adaptive amplifier circuitry for a microphone array with alternative operating modes. In one mode, background noise is reduced when the speaker is in a near field position and a relatively quiet environment. In another mode, the microphone signals are amplified, with speech being boosted more than background noise, when the speaker moves from a near field position to a far field position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.