Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
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Blind Source Deconvolution Based on Frequency Domain Convolution Model Under Highly Reverberant Environments
Takeshi KoyaTakaaki IshibashiHiroshi ShiratsuchiHiromu Gotanda
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2009 Volume 22 Issue 8 Pages 287-294

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Abstract

In order to solve the blind source deconvolution, a convolved mixing process in the time domain is often transformed into an instantaneous mixing model in the frequency domain. However, the model is only an approximated one and thus does not work effectively under highly reverberant environments. By dividing the impulse response properly, Servière has precisely transformed the time-domain convolved mixture to a frequency-domain convolved mixture and has proposed a new FDICA approach available under high reverberation. In the approach, however, the permuation and scaling problems are unresolved as well as the distortion due to whitening. In the present paper, an improved approach without such problems is proposed and is confirmed to be valid in a highly reverberant real environment

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© 2009 The Institute of Systems, Control and Information Engineers
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