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Computational Complexity Reduction with Mel-Frequency Filterbank-Based Approach for Multichannel Speech Enhancement

Jungpyo HONG, Sangbae JEONG

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Summary :

Multichannel speech enhancement systems (MSES') have been widely utilized for diverse types of speech interface applications. A state-of-the-art MSES primarily utilizes multichannel minima-controlled recursive averaging for noise estimations and a parameterized multichannel Wiener filter for noise reduction. Many MSES' are implemented in the frequency domain, but they are computationally burdensome due to the numerous complex matrix operations involved. In this paper, a novel MSES intended to reduce the computational complexity with improved performance is proposed. The proposed system is implemented in the mel-filterbank domain using a frequency-averaging technique. Through a performance evaluation, it is verified that the proposed mel-filterbank MSES achieves improvements in the perceptual speech quality with a reduced level of computation compared to a conventional MSES.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E100-A No.10 pp.2154-2157
Publication Date
2017/10/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E100.A.2154
Type of Manuscript
LETTER
Category
Speech and Hearing

Authors

Jungpyo HONG
  KAIST
Sangbae JEONG
  Gyeongsang Natl. Univ.

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