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Subband-Based Blind Separation for Convolutive Mixtures of Speech

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dc.contributor.author Shoko Araki en
dc.contributor.author Shoji Makino en
dc.contributor.author Robert Aichner en
dc.contributor.author Tsuyoki Nishikawa en
dc.contributor.author Hiroshi Saruwatari en
dc.date.accessioned 2012-07-05T07:00:45Z en
dc.date.available 2012-07-05T07:00:45Z en
dc.date.issued 2005-12 en
dc.identifier.issn 0916-8508 en
dc.identifier.uri http://hdl.handle.net/10061/7810 en
dc.description.abstract We propose utilizing subband-based blind source separation (BSS) for convolutive mixtures of speech. This is motivated by the drawback of frequency-domain BSS, i.e., when a long frame with a fixed long frame-shift is used to cover reverberation, the number of samples in each frequency decreases and the separation performance is degraded. In subband BSS, (1) by using a moderate number of subbands, a sufficient number of samples can be held in each subband, and (2) by using FIR filters in each subband, we can manage long reverberation. We confirm that subband BSS achieves better performance than frequency-domain BSS. Moreover, subband BSS allows us to select a separation method suited to each subband. Using this advantage, we propose efficient separation procedures that consider the frequency characteristics of room reverberation and speech signals (3) by using longer unmixing filters in low frequency bands and (4) by adopting an overlap-blockshift in BSS's batch adaptation in low frequency bands. Consequently, frequency-dependent subband processing is successfully realized with the proposed subband BSS. en
dc.language.iso en en
dc.publisher 電子情報通信学会 ja
dc.rights Copyright (C) 2005 電子情報通信学会. ja
dc.subject blind source separation en
dc.subject speech separation en
dc.subject convolutative mixtures en
dc.subject subband processing en
dc.subject frequency dependent processing en
dc.title Subband-Based Blind Separation for Convolutive Mixtures of Speech en
dc.type.nii Journal Article en
dc.textversion publisher en
dc.identifier.ncid AA10826239 en
dc.identifier.jtitle IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences en
dc.identifier.volume E88-A en
dc.identifier.issue 12 en
dc.identifier.spage 3593 en
dc.identifier.epage 3603 en
dc.relation.doi 10.1093/ietfec/e88-a.12.3593 en

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