Acoustic echo cancellation using blind source separation
US8855295B1 · kind B1 · utility
12Cited by
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24Claims
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Key dates
| Filing date | Jun 25, 2012 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Sep 21, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0272
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Techniques for utilizing blind source separation as a front-end to an acoustic echo canceller are described herein. The techniques include removing a first portion of an acoustic echo from an audio signal using blind source separation and a reference signal. The techniques then further remove a second portion of the acoustic echo using an acoustic echo canceller and the reference signal. Further, output of the blind source separation may be used to improve double-talk detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.