TY - GEN

T1 - On calculating the inverse of separation matrix in frequency-domain blind source separation

AU - Sawada, Hiroshi

AU - Araki, Shoko

AU - Mukai, Ryo

AU - Makino, Shoji

PY - 2006

Y1 - 2006

N2 - For blind source separation (BSS) of convolutive mixtures, the frequency-domain approach is efficient and practical, because the convolutive mixtures are modeled with instantaneous mixtures at each frequency bin and simple instantaneous independent component analysis (ICA) can be employed to separate the mixtures. However, the permutation and scaling ambiguities of ICA solutions need to be aligned to obtain proper time-domain separated signals. This paper discusses the idea that calculating the inverses of separation matrices obtained by ICA is very important as regards aligning these ambiguities. This paper also shows the relationship between the ICA-based method and the time-frequency masking method for BSS, which becomes clear by calculating the inverses.

AB - For blind source separation (BSS) of convolutive mixtures, the frequency-domain approach is efficient and practical, because the convolutive mixtures are modeled with instantaneous mixtures at each frequency bin and simple instantaneous independent component analysis (ICA) can be employed to separate the mixtures. However, the permutation and scaling ambiguities of ICA solutions need to be aligned to obtain proper time-domain separated signals. This paper discusses the idea that calculating the inverses of separation matrices obtained by ICA is very important as regards aligning these ambiguities. This paper also shows the relationship between the ICA-based method and the time-frequency masking method for BSS, which becomes clear by calculating the inverses.

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U2 - 10.1007/11679363_86

DO - 10.1007/11679363_86

M3 - Conference contribution

AN - SCOPUS:33745725493

SN - 3540326308

SN - 9783540326304

T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

SP - 691

EP - 699

BT - Independent Component Analysis and Blind Signal Separation - 6th International Conference, ICA 2006, Proceedings

T2 - 6th International Conference on Independent Component Analysis and Blind Signal Separation, ICA 2006

Y2 - 5 March 2006 through 8 March 2006

ER -