Stability study for source separation in convolutive mixtures of two sources

Abstract Blind separation of sources in convolutive mixtures involves the stability of an IIR filter for both direct and recursive structures. In this communication, in the case of two convolutive mixtures of two sources, we are interested in sufficient conditions on mixture filters which imply the stability of this IIR filter. Various stability criteria of IIR filters are studied in order to obtain a simple condition for stability.