Patent ID: 6577675
Filing Date: 2003-06-10
Classification: G10L,H03H

Abstract:
A method for separating a mixture of source signals to regain said source signals, said method being based on measured signals, comprising the steps of:bringing every measured signal to a separation structure comprising adders and cross-connected linear filters of output signals of said separation structure, calculating cross-correlation functions between the signals after said adders for lags between a first lag and a last lag, and using a criterion function to determine how the linear filters comprised in said separation structure will be designed, wherein said criterion function is formulated as a sum of terms where the addition is extended to at least one cross-correlation function between output signals of the separation structure for a delay between said first lag and last lag, and wherein each term in said sum has a weight factor and a factor consisting of an even function of a specific cross-correlation function at a specific delay.