Blind extraction of dominant target sources using ICA and time-frequency masking

Hiroshi Sawada*, Shoko Araki, Ryo Mukai, Shoji Makino

*この研究の対応する著者

研究成果: Article査読

80 被引用数 (Scopus)

抄録

This paper presents a method for enhancing target sources of interest and suppressing other interference sources. The target sources are assumed to be close to sensors, to have dominant powers at these sensors, and to have non-Gaussianity. The enhancement is performed blindly, i.e., without knowing the position and active time of each source. We consider a general case where the total number of sources is larger than the number of sensors, and neither the number of target sources nor the total number of sources is known. The method is based on a two-stage process where independent component analysis (ICA) is first employed in each frequency bin and then time-frequency masking is used to improve the performance further. We propose a new sophisticated method for deciding the number of target sources and then selecting their frequency components. We also propose a new criterion for specifying time-frequency masks. Experimental results for simulated cocktail party situations in a room, whose reverberation time was 130 ms, are presented to show the effectiveness and characteristics of the proposed method

本文言語English
論文番号1709904
ページ(範囲)2165-2173
ページ数9
ジャーナルIEEE Transactions on Audio, Speech and Language Processing
14
6
DOI
出版ステータスPublished - 2006 11
外部発表はい

ASJC Scopus subject areas

  • 音響学および超音波学
  • 電子工学および電気工学

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