島根大学総合理工学研究科

ISSN:1342-7113

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Use this link to cite this item : https://ir.lib.shimane-u.ac.jp/3602

Memoirs of the Graduate School of Science and Engineering Shimane University. Series A 34

2000-12-24 発行

A Method of Real-world Blind Separation Implemented in Time-frequency Domain

Kawamoto, Mitsuru

Matsuoka, Kiyotoshi

Ohnishi, Noboru

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In this paper, we propose a new method of real-world blind separation for non-stationary signals (e.g.,speech signal, music). The proposed method is implemented in the time-frequency domain and achieves real-world blind separation by minimizing a cost function with the algorithm derived using the natural gradient under a given condition. We carried out computer simulations to demonstrate the validity of our proposed method. Moreover, we apply our method to an experiment which extracts two source signals from their mixtures observed in a normal room with computer and air conditioning noises. The results show that our method can achieve real-world blind separation.

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