Systems and methods for double-talk detection in acoustically harsh environments
US8498407B2 · kind B2 · utility
4Cited by
18References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2008 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Feb 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications device that is configured to detect double talk is described. An echo canceller is configured to cancel an echo from an input signal using an adaptive filter. A double-talk detector provides a double-talk statistic. The double-talk statistic is proportional to the ratio of the remaining echo energy in the cancellation error signal and the total cancellation error energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.