Noise canceling microphone
US7248708B2 · kind B2 · utility
15Cited by
5References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2005 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Jun 29, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/05
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved noise canceling microphone is provided including robust design features and advanced noise control and speech discrimination convergence characteristics. Two adaptive controllers are used to ensure robust performance in quickly changing acoustic environments ensuring an acceptable minimum performance characteristic. Additionally, a new real-time spectral estimation procedure is applied to a noise canceling communications microphone platform that permits continued and optimal adaptation of non-voice bandwidth frequencies during speech transients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.