An extended ACDC Algorithm for the Blind Estimation of Convolutive Mixing Systems

Alfred Mertins, Iain Russel

Abstract

This paper presents an extension of the ACDC algorithm introduced by Yeredor for the instantaneous mixing problem to the more general convolutive mixing problem with non-white sources. Further assumptions made on the source signals are their mutual statistical independence, nonstationarity and smoothness of their power spectra. The algorithm iterates the estimation of the mixing system (AC step) and the source statistics (DC step) until convergence is achieved. The proposed algorithm operates in the frequency domain, but unlike most frequency domain algorithms, it carries out some of the operations jointly for all frequencies. This allows us to overcome frequency dependent permutation and scaling problems.

Original languageEnglish
Title of host publicationSeventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings
Number of pages4
PublisherIEEE
Publication date01.01.2003
Pages527-530
Article number1224930
ISBN (Print)0-7803-7946-2
DOIs
Publication statusPublished - 01.01.2003
Event7th International Symposium on Signal Processing and Its Applications - Paris, France
Duration: 01.07.200304.07.2003
Conference number: 106263

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