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Conference Papers Year : 2012

Some uniqueness results in sparse convolutive source separation

Abstract

The fundamental problems in the traditional frequency do- main approaches to convolutive blind source separation are 1) arbitrary permutations and 2) arbitrary scaling in each frequency bin of the esti- mated filters or sources. These ambiguities are corrected by taking into account some specific properties of the filters or sources, or both. This paper focusses on the filter permutation problem, assuming the absence of the scaling ambiguity, investigating the use of temporal sparsity of the filters as a property to aid permutation correction. Theoretical and ex- perimental results bring out the potential as well as the extent to which sparsity can be used as a hypothesis to formulate a well posed permuta- tion problem.
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Dates and versions

hal-00659913 , version 1 (14-01-2012)

Identifiers

  • HAL Id : hal-00659913 , version 1

Cite

Alexis Benichoux, Prasad Sudhakar, Frédéric Bimbot, Rémi Gribonval. Some uniqueness results in sparse convolutive source separation. International Conference on Latent Variable Analysis and Source Separation, Mar 2012, Tel Aviv, Israel. ⟨hal-00659913⟩
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