Method for synthesizing an echo path in an echo canceller
US5649012A · kind A · utility
13Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Sep 15, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of synthesizing an echo path in an echo canceller is provided. The method includes the steps of obtaining near end and far end signal samples at an echo canceller, locating the echo in a background task using a whitened version of the signal, transferring the echo location information to a foreground task, and eliminating the echo in the incoming signals by filtering the signal in the location passed to the foreground task by the background task.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.