島根大学総合理工学部紀要.シリーズA

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島根大学総合理工学部紀要.シリーズ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
河本 満
松岡 清利
大西 昇
ファイル
内容記述(抄録等)
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.