Echo cancelling/suppression for handsets
US6999582B1 · kind B1 · utility
25Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2000 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Jan 20, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for suppressing echo signals generated in a communication path such as acoustic coupling between a speaker and a microphone in a telephone device handset includes the steps of monitoring signals supplied to the communication path to determine an attribute thereof and masking signals received from the communication path as a function of the determined attribute of the monitored signals thereby to suppress echo.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.