Blind Signal Separation, An Overview

Abstract

Blind Signal Separation (BSS) is the process of recovering independent signals that correspond to the individual source signals using only observed linear mixtures of these. In an acoustic context, these source signals are correlated in time and are assumed to be independent of each other. The mixing system is convolutive in the sense that the microphones pick up delayed and attenuated versions of the source signals due to reflections in the room. The microphone signals typically contain some microphone noise.