Permutation Correction in Frequency Domain ICA Using Propagation Characteristics in Real Environments

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  • ISHIBASHI Takaaki
    Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology
  • INOUE Katsuhiro
    Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology
  • GOTANDA Hiromu
    Faculty of Humanity Oriented Science and Engineering, Kinki University
  • KUMAMARU Kousuke
    Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology

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Other Title
  • 実環境下での伝達特性を利用した周波数領域ＩＣＡの成分置換問題の解決
  • ジツ カンキョウ カ デ ノ デンタツ トクセイ オ リヨウ シタ シュウハスウ リョウイキ ICA ノ セイブン チカン モンダイ ノ カイケツ

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Abstract

When the frequency domain ICA is applied to noise reduction in a real environment, it is essential to solve the scaling and permutation problems peculiar inherent in frequency domain ICA. The present paper gives a solution to the problems in a real environment. The proposed method is simple, the amount of calculation is small. And the method has high correction performance without depending on the frequency bands and distances from source signals to microphones. Furthermore, it can be applied under the real environment. From several experiments in a virtual room and a real room, it clarifies that the proposed method has been verified.

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