Weight coefficients applied to eliminate permutation of frequency domain.

In order to solve the permutation problem of frequency-domain blind source separation, this paper studied the influence of discontinuity of demixing matrix and distance between frequency bins on permutation problem, and proposed an improved method. It used weight coefficients to represent the influence of each frequency bin to the undetermined frequency bin, and used the demixing matrix of the previous frequency bin to initial the demixing matrix of the latter one. This paper presented the processes of the improved method. The improved method was applied in occasions of instantaneous mixtures, convolutive mixtures and real-room conditions. The results show the proposed method has better signal to noise ratio, speed and stronger robustness, comparing with Murata method. [ABSTRACT FROM AUTHOR]