同時摂動最適化法を用いたブラインド信号分離

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  • Blind Signal Separation Using Simultaneous Perturbation Optimization Method
  • ドウジセツドウ サイテキカホウ オ モチイタ ブラインド シンゴウ ブンリ

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When independent plural signals are mixed and the mixed plural signals are measured, blind signal sepa-ration technique is very interesting approach to separate these signals only based on the measured signals.<br> In this paper, we propose a recursive method to obtain the separating matrix based on the mutual in-formation, via the simultaneous perturbation optimization method. The simultaneous perturbation method updates the separating matrix by using only two values of the mutual information.<br> Some examples for audio signals are shown to confirm viability of the proposed method. In these examples, our method separated two original signals from mixed ones properly. This method is applicable to on-line separation because of a simplicity of the algorithm.

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