| 摘要 |
<p>A communication unit having an acoustic echo canceller for cancelling an acoustic echo caused by a received voice signal amplified through a loud speaker returning to a microphone, said communication unit comprising: means for suppressing a transmitted residual acoustic echo signal left unremoved by said acoustic echo canceller owing to a peripheral noise by means of inserting a loss corresponding to said peripheral noise into a transmission path side. <IMAGE></p> |
