SYSTEM FOR THE DIGITAL PROCESSING OF AN ACOUSTIC OR ELECTRICAL SIGNAL, AND TELEPHONE SET PROVIDED WITH SUCH A PROCESSING SYSTEM

摘要

The invention relates to a system for the digital processing of an acoustic signal, arranged in a telephone set provided with a loudspeaker (28) and a microphone (27), between said loudspeaker and said microphone. The aforementioned system comprises automatic gain control means (30) associated with an echo cancellation device (29). Said system also comprises calculation means (30, 36) which are configured to apply a transfer function of the automatic gain control means to the echo cancellation device input, so that the signal from the microphone and the signal for the loudspeaker are each manipulated by a function comprising the same term, corresponding to the transfer function of the automatic gain control means.