IEEJ Transactions on Electronics, Information and Systems
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
Paper
A Target Sound Extraction via 2ch Microphone Array Using Phase Information
Kenji SuyamaKota Takahashi
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2003 Volume 123 Issue 7 Pages 1271-1276

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Abstract

In this paper, we propose a novel learning method of linear filters for a target sound extraction in a non—stationary noisy environment via a microphone array with 2 elements. The method is based on a phase difference between two microphones, which is detected from outputs of the Hilbert transformer whose length is corresponding to a fundamental period of vowel parts of speech signals. The cue signal, which has a correlation with a power envelop of target sound, is generated using a mean square of phase difference and applied to the learning. A superior performance of the proposed method is presented by several computer simulation results.

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© 2003 by the Institute of Electrical Engineers of Japan
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