Frequency-domain contrast functions for separation of convolutive mixtures

  • Authors:

  • J.-C. Pesquet;Binning Chen;A. P. Petropulu

  • Affiliations:

  • Lab. Systemes de Commun., Univ. de Marne-la-Vallee, Marne la Vallee, France;-;-

  • Venue:
  • ICASSP '01 Proceedings of the Acoustics, Speech, and Signal Processing, 2001. on IEEE International Conference - Volume 05
  • Year:
  • 2001

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Abstract

This paper addresses the problem of blind separation of convolutive mixtures via contrast maximization. New frequency-domain contrast functions are constructed based on second and higher-order spectra of the observations. They allow one to separate mixtures of sources which are spatially independent, and temporally possibly non i.i.d. linear or non-linear processes. The proposed criteria provide a framework for extending to the convolutive case contrasts that have been proposed in the context of instantaneous mixtures.