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Authors: Tomomi Abe 1 ; Mitsuharu Matsumoto 2 and Shuji Hashimoto 1

Affiliations: 1 Waseda university, Japan ; 2 The University of Electro-Communications, Japan

Keyword(s): Noise reduction, Parameter optimization, ε-filter, Time-frequency domain.

Related Ontology Subjects/Areas/Topics: Applications ; Audio and Speech Processing ; Digital Signal Processing ; Multimedia ; Multimedia Signal Processing ; Pattern Recognition ; Software Engineering ; Telecommunications

Abstract: Time-Frequency ε-filter (TF ε-filter) can reduce most kinds of noise from a single-channel noisy signal with preserving the signal that varies drastically such as a speech signal. The filter design is simple and it can effectively reduce noise. It can reduce not only small stationary noise but also large nonstationary noise. However, it has some parameters and we need to set them appropriately based on empirical control. So far, there are few studies to evaluate the appropriateness of the parameter setting of ε-filter in general. In this paper, we employ correlation coefficient of the filter output and the difference between the input and the filter output as the evaluation function of the parameter setting. We also show the algorithm to set the optimal parameter of TF ε-filter. We conducted the experiments to compare the value of the correlation coefficient and the mean square error when we change ε value. The experimental results show the applicability of our criterion in parameter setting of ε-filter. (More)

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Paper citation in several formats:
Abe, T.; Matsumoto, M. and Hashimoto, S. (2009). PARAMETER OPTIMIZATION IN TIME-FREQUENCY ε-FILTER BASED ON CORRELATION COEFFICIENT. In Proceedings of the International Conference on Signal Processing and Multimedia Applications (ICETE 2009) - SIGMAP; ISBN 978-989-674-007-8, SciTePress, pages 107-111. DOI: 10.5220/0002182601070111

@conference{sigmap09,
author={Tomomi Abe. and Mitsuharu Matsumoto. and Shuji Hashimoto.},
title={PARAMETER OPTIMIZATION IN TIME-FREQUENCY ε-FILTER BASED ON CORRELATION COEFFICIENT},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications (ICETE 2009) - SIGMAP},
year={2009},
pages={107-111},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002182601070111},
isbn={978-989-674-007-8},
}

TY - CONF

JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications (ICETE 2009) - SIGMAP
TI - PARAMETER OPTIMIZATION IN TIME-FREQUENCY ε-FILTER BASED ON CORRELATION COEFFICIENT
SN - 978-989-674-007-8
AU - Abe, T.
AU - Matsumoto, M.
AU - Hashimoto, S.
PY - 2009
SP - 107
EP - 111
DO - 10.5220/0002182601070111
PB - SciTePress

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