Control method and device for echo canceller
US6449361B1 · kind B1 · utility
47Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Mar 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of controlling an echo canceller for providing an echo cancellation signal by subtracting an echo replica signal either from a transmit signal or a receive signal. The method includes the steps of a first step of performing a speech detection based on the echo cancellation signal provided by the echo canceller; a second step of detecting a double talk condition based on a result of the speech detection performed by the first step; and a third step of controlling a learning operation of the echo canceller based on a result of the double talk detection performed by the second step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.