In this paper we address the problem of overcomplete BSS for convolutive mixtures following a two-step approach. In the first step the mixing matrix is estimated, which is then used to separate the signals in the second step. For estimating the mixing matrix we propose an algorithm based on hierarchical clustering, assuming that the source signals are sufficiently sparse. It has the advantage of working directly on the complex valued sample data in the frequency-domain. It also shows better convergence than algorithms based on self-organizing maps. The results are improved by reducing the variance of direction of arrival. Experiments show accurate estimations of the mixing matrix and very low musical tone noise. © Springer-Verlag 2004.
CITATION STYLE
Winter, S., Sawada, H., Araki, S., & Makino, S. (2004). Overcomplete BSS for convolutive mixtures based on hierarchical clustering. Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 3195, 652–660. https://doi.org/10.1007/978-3-540-30110-3_83
Mendeley helps you to discover research relevant for your work.