Method of accelerating the training of an acoustic echo canceller in a full-duplex beamforming-based audio conferencing system
US8213596B2 · kind B2 · utility
42Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Mar 29, 2006 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | May 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is set forth for accelerating the total acoustic echo cancellation convergence time in a microphone array full-duplex conferencing system with beamformer. The invention is based on sequentially switching the beamformer to untrained sectors during periods of far-end speech activity and performing real-time cancellation of far-end echo signals from the near-end signals to consecutively adapt and store filter coefficients for the echo canceller corresponding to each sector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.