SOUND PICK-UP METHOD AND DEVICE FOR, IN PARTICULAR IN HANDSFREE TELEPHONE TERMINALS

摘要

The invention relates to processing signal for improving a sound pick-up in telephone and/ or videophone units. The inventive method consists in comparing (13) a signal transmitted by a unit microphone (Mic) with a threshold low value (THR_LOW) and in amplifying (14,15) said microphone-transmitted signal when it is less than the threshold low value. However, said steps depend on the test (10) carried out on a signal used for feeding the loud speaker (HP), in particular consisting in controlling said last signal (crete_HP) of a background noise order (BDF_d) in such a way that the background noise is not amplified by an acoustical coupling between the microphone (Mic) and the loud speaker (HP).