Supervised and semi-supervised separation of sounds from single-channel mixtures

Authors:
Paris Smaragdis;Bhiksha Raj;Madhusudana Shashanka
Affiliations:
Mitsubishi Electric Research Laboratories, Cambridge MA;Mitsubishi Electric Research Laboratories, Cambridge MA;Department of Cognitive and Neural Systems, Boston University, Boston MA
Venue:
ICA'07 Proceedings of the 7th international conference on Independent component analysis and signal separation
Year:
2007

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Abstract

In this paper we describe a methodology for model-based single channel separation of sounds. We present a sparse latent variable model that can learn sounds based on their distribution of time/ frequency energy. This model can then be used to extract known types of sounds from mixtures in two scenarios. One being the case where all sound types in the mixture are known, and the other being being the case where only the target or the interference models are known. The model we propose has close ties to non-negative decompositions and latent variable models commonly used for semantic analysis.