Dual microphone noise reduction for headset application
US7773759B2 · kind B2 · utility
64Cited by
5References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Jun 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/05
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Improved vocal signals are obtained in headsets and similar devices by including a microphone inside a chamber formed at least in part by the wearer's ear. This second microphone provides a reduced noise input signal. The reduced noise signal is corrected by input from another microphone, located outside the chamber. This correction can include echo cancellation, spectral shaping, frequency extension, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.