Adaptive echo cancelling system for telephony applications
US6108412A · kind A · utility
9Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1997 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Oct 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/23
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This invention deals with an adaptive echo cancelling system for communication networks. The system includes an adaptive filter for acoustic echo cancellation that uses a combination of echo cancelling and gain control techniques. The main advantages of the combination of these approaches are good communication quality during double talk and easier control of the output echo level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.