I. Introduction
This paper deals with the general problem of source separation with a single channel, which can be formulated as follows. Let and be two sampled audio signals (also called sources) and the sum of these two signals $$x(n)=s_{1}(n)+s_{2}(n)\eqno{\hbox{(1)}}$$ also called mix. Given , the source separation problem in the case of a single channel consists in estimating the contributions of each of the two sources .