Phonetics and Speech Sciences (말소리와 음성과학)

Korean Society of Speech Sciences (한국음성학회)
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A Single-Channel Speech Dereverberation Method Using Sparse Prior Imposition in Reverberation Filter Estimation

반향 필터 추정에서 성김 특성을 이용한 단일채널 음성반향제거 방법

  • Received : 2013.09.25
  • Accepted : 2013.12.10
  • Published : 2013.12.31
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Abstract

Since a reverberation filter is generally much shorter than the corresponding dereverberation filter, a single-channel speech dereverberation method based on reverberation filter estimation has been developed to improve its performance. Unfortunately, a typical reverberation filter still requires too many coefficients to be accurately estimated using limited speech observations. In order to exploit sparseness of reverberation filter coefficients, in this paper, we present an algorithm to impose a sparse prior to the process of reverberation filter estimation. Simulation results demonstrate that the sparse prior imposition further improves performance of the speech dereverberation method based on reverberation filter estimation.

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References

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