| 摘要 |
<p>With prior acoustic echo cancellers, removing an echo component with high accuracy is difficult in cases when a time lag occurs in proportion to time, caused by a lag in the sampling rate between an A/D converter and a D/A converter. In the present invention, an acoustic echo component can be removed with high accuracy, even when a time lag occurs in proportion to time, by using an acoustic echo canceller characterized in having a time-lag coefficient estimation unit for estimating a proportional coefficient for the time-proportional time lag, and further characterized in using the time lag coefficient output by the estimation unit to remove the acoustic echo component.</p> |
