For convenience of the echo canceller transmission channels by using a coding law pseudo - logarithmic

摘要

Echo canceller inserted in a pcm link convenience, 1984, a coding law pseudo - logarithmic (for example a law of the ccitt) has, close to an installation for connection to a codec subscriber cd, in order to cancel out in the speech signals close to s issued by the codec cd is the transmission channel ve the effect of the echo y of the speech signals x issued to the remote codec cd by the reception channel vr and comprising a manner known per se, a