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A New Initialization Method for Frequency-Domain Blind Source Separation Algorithms

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3 Author(s)
Clark, F.S.P. ; Dept. of Electron. Eng., Fed. Univ. of Rio de Janeiro, Rio de Janeiro, Brazil ; Petraglia, M.R. ; Haddad, D.B.

Frequency-domain blind source separation (BSS) techniques have been proposed with the objective of increasing the speed and/or reducing the computational complexity of conventional algorithms, mainly for applications that involve large convolutive mixture filters. In this letter, we present a new initialization method for frequency-domain BSS algorithms employing estimates of the directions of arrival and time-frequency masking, that outperforms the classical pre-whitening initialization technique. Performance and convergence time results of the proposed approach are presented using a frequency-domain BSS algorithm that exploits higher-order frequency dependencies, employing real conference room recordings and simulated data.

Published in:

Signal Processing Letters, IEEE  (Volume:18 ,  Issue: 6 )