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IEICE TRANSACTIONS on Fundamentals

Blind Source Separation for Moving Speech Signals Using Blockwise ICA and Residual Crosstalk Subtraction

Ryo MUKAI, Hiroshi SAWADA, Shoko ARAKI, Shoji MAKINO

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Summary :

This paper describes a real-time blind source separation (BSS) method for moving speech signals in a room. Our method employs frequency domain independent component analysis (ICA) using a blockwise batch algorithm in the first stage, and the separated signals are refined by postprocessing using crosstalk component estimation and non-stationary spectral subtraction in the second stage. The blockwise batch algorithm achieves better performance than an online algorithm when sources are fixed, and the postprocessing compensates for performance degradation caused by source movement. Experimental results using speech signals recorded in a real room show that the proposed method realizes robust real-time separation for moving sources. Our method is implemented on a standard PC and works in realtime.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E87-A No.8 pp.1941-1948
Publication Date
2004/08/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Section on Digital Signal Processing)
Category
Speech/Acoustic Signal Processing

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