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

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Memoirs of the Graduate School of Science and Engineering Shimane University. Series A 34
2000-12-24 発行

周波数領域で行うブラインド分離の一手法

A Method of Real-world Blind Separation Implemented in Time-frequency Domain
Kawamoto, Mitsuru
Matsuoka, Kiyotoshi
Ohnishi, Noboru
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Description
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.