MIKI Laboratory
Japanese Version

About...
  • Prof. MIKI
  • What he studies. [Poster], [Lecture]

  • Demonstrations:
    Logos of Tokyo 2020 Olympic and Paralympic Games


    Research Area:
  • Chaotic approach to the annoying sound.
  • Estimation of delay time using Hilbert Transform.
  • Separation of musical sound using wavelet transform.
  • Sound generator for the annoying sound synthesizer.
  • Sound playback system for the time compression method.
  • Sound propagation through closely packed particles.
  • Study on signal processing for the time expansion method.


  • Papers:
    1. Miki, Y., Acoustical properties of porous materials [PDF]
       — Modifications of Delany-Bazley models —
       — Generalizations of empirical models —
       J. Acoust. Soc. Jpn. (E), Vol. 11 (1), pp. 19-28 (1990)
    2. Miki, Y., The use of the Hilbert transform for the determination of acoustical boundaries,
       6-th International Congress on Sound and Vibration, pp. 2899-2906 (1999)
    3. Y. Tsuchiya and Y. Miki, Delay time estimation using Hilbert transform and new extrapolation procedure,
      SICE2004, pp. 776-780 (2004)
    4. Y. Tsuchiya and Y. Miki, Measurements of sound reflection from porous materials,
      SICE2005, pp. 168-171 (2005)
    5. Y. Miki and Y. Tsuchiya, New method for measuring sound reflection characteristics based on the causality and the minimum-phase property of the system,
      Inter-noise 2006 (2006)
    6. Y. Miki, Using the logistic map to generate scratching sounds,
      The Mathematica Journal, vol. 15 (2013)
    7. Y. Miki, Scratching-sound generator based on the logistic map,
      Bulletin of science and engineering, Takushoku University, vol. 14, No. 1, pp. 3-7 (2016)

    Signal Processing with Mathematica
  • Chapter 1 Time signal on TV, how does it sound?
  • Chapter 2 Resonance of the beer bottle "Super Dry"
  • Chapter 3 Speech analysis (cepstrum)
  • Chapter 4 Speech analysis (voice of Mr. KK, the Singer)