发明名称 |
Method, system and computer program product for acoustic echo cancellation |
摘要 |
In response to a first signal, a first sound wave is output. A second sound wave is received that includes an acoustic echo of the first sound wave. In response to the second sound wave, a second signal is output that cancels an estimate of the acoustic echo. The estimate of the acoustic echo is iteratively adapted to increase a statistical independence between the first and second signals, irrespective of whether a first voice is present in the first sound wave, and irrespective of whether a second voice is present in the second sound wave. |
申请公布号 |
US9225843(B2) |
申请公布日期 |
2015.12.29 |
申请号 |
US201213629035 |
申请日期 |
2012.09.27 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
Ikram Muhammad Z. |
分类号 |
H04M9/08 |
主分类号 |
H04M9/08 |
代理机构 |
|
代理人 |
Davis, Jr. Michael A.;Cimino Frank D. |
主权项 |
1. A method performed by an information handling system for acoustic echo cancellation, the method comprising:
in response to a first signal, outputting a first sound wave; receiving a second sound wave that includes an acoustic echo of the first sound wave; computing an estimate of the acoustic echo; in response to the second sound wave, outputting a second signal that represents the second sound wave minus the estimate of the acoustic echo; and iteratively adapting the estimate of the acoustic echo to increase a statistical independence between the first signal and the second signal in a frequency domain based on second-order statistics without higher-order statistics, irrespective of whether a first voice is present in the first sound wave, and irrespective of whether a second voice is present in the second sound wave. |
地址 |
Dallas TX US |