Publication Details

This paper originally appeared as: Mei, T, Xi, J, Chicharo, JF and Yin, F, De-cumulant based approaches for convolutive blind source separation, Proceedings of 2004 International Intelligent Multimedia, Video and Speech Processing, 20-22 October 2004, 471-474. Copyright IEEE 2004.


This paper studies the blind separation of signal sources (BSS) based on the approach of de-cumulant. It considers the cases where independent signal sources are mixed through convolutive mixing system with unity autochannel frequency responses and causal cross-channel FIR filters. Firstly, it tries to show that the de-cumulant is sufficient for separation. Secondly, novel algorithms are developed based on zero-forcing of cross-cumulant pairs. These algorithms are developed in the time-domain and so there is not the frequency permutation ambiguity problem usually suffered by most of the frequency-domain algorithms. Simulation results are presented to support the validity of the proposed algorithms.