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Nonnegative matrix factorization 2D with the flexible beta-Divergence for Single Channel Source Separation

Lookup NU author(s): Dr Wai Lok Woo, Professor Satnam Dlay

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Abstract

This paper presents an algorithm for nonnegative matrix factorization 2D (NMF-2D) with the flexible beta-Divergence. The beta-Divergence is a group of cost functions parametrized by a single parameter beta. The Least Squares divergence, Kullback-Leibler divergence and the Itakura-Saito divergence are special cases (beta=2,1,0). This paper presents a more complete algorithm which uses a flexible range of beta, instead of be limited to just special cases. We describe a maximization-minimization (MM) algorithm lead to multiplicative updates. The proposed factorization decomposes an information-bearing matrix into two-dimensional convolution of factor matrices that represent the spectral dictionary and temporal codes with enhanced performance. The method is demonstrated on the separation of audio mixtures recorded from a single channel. Experimental tests and comparisons with other factorization methods have been conducted to verify the efficacy of the proposed method.


Publication metadata

Author(s): Yu KW, Woo WL, Dlay SS

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 2015 IEEE Workshop on Signal Processing Systems (SiPS)

Year of Conference: 2015

Print publication date: 01/01/2015

Acceptance date: 01/01/1900

Publisher: IEEE

URL: http://dx.doi.org/10.1109/SiPS.2015.7344990

DOI: 10.1109/SiPS.2015.7344990


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