METHOD AND DEVICE FOR PROCESSING STRONG ECHOES, IN PARTICULAR IN HANDSFREE TELEPHONE TERMINALS

摘要

The invention relates to processing echoes in telephone and/or videophone units, wherein a strong echo can cause an interaction between a loud speaker and a microphone. For identifying a strong echo risk, the inventive method consists in jointly detecting a strong attack (32), greater than a predetermined threshold, on a signal feeding the loud speaker (HP) and a low level (33) which is less than a selected threshold of a signal transmitted by the microphone (Mic).