Simulated annealing based parameter optimization of Time-Frequency ε-filter utilizing correlation coefficient

Tomomi Matsumoto, Mitsuharu Matsumoto, Shuji Hashimoto

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Time-Frequency ε-filter (TF ε-filter) can reduce different types of noise from a single-channel noisy signal while preserving the signal that varies drastically such as a speech signal. It can reduce not only small stationary noise but also large nonstationary noise. However, it has some parameters whose values are set empirically. So far, there are few studies to optimize the parameter of TF ε-filter automatically. In this paper, we employ the correlation coefficient of the filter output and the difference between the filter input and output as the evaluation function of the parameter optimization. We also propose an algorithm to set the optimal parameter of TF ε-filter automatically. The experimental results show that we can obtain the adequate parameter in TF ε-filter automatically by using the proposed method.

    Original languageEnglish
    Title of host publicationSIGMAP 2012, WINSYS 2012 - Proceedings of the International Conference on Signal Processing and Multimedia Applications and Wireless Information Networks and Systems
    Pages237-241
    Number of pages5
    Publication statusPublished - 2012
    EventInternational Conference on Signal Processing and Multimedia Applications, SIGMAP 2012 and International Conference on Wireless Information Networks and Systems, WINSYS 2012 - Rome
    Duration: 2012 Jul 242012 Jul 27

    Other

    OtherInternational Conference on Signal Processing and Multimedia Applications, SIGMAP 2012 and International Conference on Wireless Information Networks and Systems, WINSYS 2012
    CityRome
    Period12/7/2412/7/27

    Keywords

    • ε-filter
    • Noise reduction
    • Nonlinear filter
    • Parameter optimization
    • Simulated annealing
    • Time-Frequency ε-filter

    ASJC Scopus subject areas

    • Information Systems
    • Signal Processing
    • Communication

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  • Cite this

    Matsumoto, T., Matsumoto, M., & Hashimoto, S. (2012). Simulated annealing based parameter optimization of Time-Frequency ε-filter utilizing correlation coefficient. In SIGMAP 2012, WINSYS 2012 - Proceedings of the International Conference on Signal Processing and Multimedia Applications and Wireless Information Networks and Systems (pp. 237-241)