Echo suppression and echo cancellation
US7099460B1 · kind B1 · utility
2Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2000 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Nov 17, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Echo canceling method including the steps of determining an Euclidean norm of an echo-replica signal, determining an Euclidean norm of an input signal, determining a gradient step size, correcting the coefficients of an adaptive filter, deriving an updated echo-replica signal, and determining an updated error signal by subtracting the updated echo-replica signal from the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.