Adaption-based reduction of echo and noise
US9595997B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 2, 2013 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Feb 4, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02166
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The systems, devices, and processes described herein may generate a signal, such as an audio signal or an electrical signal, that may include echo and/or noise. The echo may be at least partially canceled based at least in part on acoustic echo cancellation or local echo cancellation, while the noise may be at least partially reduced based at least in part on noise reduction. A residual amount of echo and/or noise may then be determined. The residual echo and/or noise may be suppressed based at least in part on adaptive filtering of the signal, which may include modifying weights of an algorithm associated with an adaptive filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.