Underdetermined source separation with structured source priors

Abstract : We consider the source extraction problem for stereo instantaneous musical mixtures with more than two sources. We prove that usual separation methods based only on spatial diversity have performance limitations when the sources overlap in the time-frequency plane. We propose a new separation scheme combining spatial diversity and structured source priors. We present possible priors based on nonlinear Independent Subspace Analysis (ISA) and Hidden Markov Models (HMM), whose parameters are learnt on solo musical excerpts. We show with an example that they actually improve the separation performance.
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Communication dans un congrès
4th Int. Conf. on Independent Component Analysis and Blind Signal Separation (ICA), Sep 2004, Granada, Spain. pp.327--332, 2004
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Contributeur : Emmanuel Vincent <>
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Emmanuel Vincent, Xavier Rodet. Underdetermined source separation with structured source priors. 4th Int. Conf. on Independent Component Analysis and Blind Signal Separation (ICA), Sep 2004, Granada, Spain. pp.327--332, 2004. 〈inria-00544694〉

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