TY - JOUR
T1 - Blind source separation for moving speech signals using blockwise ICA and residual crosstalk subtraction
AU - Mukai, Ryo
AU - Sawada, Hiroshi
AU - Arakt, Shoko
AU - Makino, Shoji
PY - 2004/8
Y1 - 2004/8
N2 - 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.
AB - 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.
KW - Blind source separation
KW - Convolutive mixtures
KW - Independent component analysis
KW - Post processing
KW - Realtime
KW - Spectral subtraction
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M3 - Article
AN - SCOPUS:4243078572
VL - E87-A
SP - 1941
EP - 1948
JO - IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
JF - IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
SN - 0916-8508
IS - 8
ER -