Blind source separation of many sounds in the frequency domain 澤田宏,向井良,荒木章子,牧野昭二

This paper describes the frequency-domain approach to the blind source separation (BSS) of convolutively mixed acoustic signals. The advantage of the frequency-domain approach is that convolutive mixtures in the time domain can be approximated as multiple simple mixtures in the frequency domain. However the permutation ambiguity should be solved to group the frequency components of the same source together. This paper presents effective methods to align the permutation ambiguity. Based on the methods, we succeeded in separating many sources in real-world situations.

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