Delayed adaptation structure for improved double-talk immunity in echo cancellation devices
US8265263B2 · kind B2 · utility
1Cited by
4References
9Claims
0Family size
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Key dates
| Filing date | Aug 2, 2007 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Jun 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/234
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a system having an adaptive filter block for receiving a reference signal and adapting to an input signal, and a block for detecting corruption of the input signal by an interference signal and in response limiting adaptation of the adaptive filter block, the improvement comprising delaying and applying the input signal to the adaptive filter block while applying the input signal to the block for detecting corruption without delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.