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This paper presents new formulations and algorithms for multichannel extensions of non-negative matrix factorization (NMF). The formulations employ Hermitian positive semidefinite matrices to represent a multichannel version of non-negative elements. Multichannel Euclidean distance and multichannel Itakura-Saito (IS) divergence are defined based on appropriate statistical models utilizing multivariate...
This paper proposes new formulations and algorithms for a multichannel extension of nonnegative matrix factorization (NMF), intending convolutive sound source separation with multiple microphones. The proposed formulation employs Hermitian positive semidefinite matrices to represent a multichannel version of nonnegative elements. Such matrices are basically estimated for NMF bases, but a source separation...
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