Hello!
Welcome to Wave Science Study since 2012 April.
Dr. Mikio Tohyama
[News]
Y. Hirata and S.Goto
"Pictorial of Sounds,"
Time-frequency properties of tones played by musical instruments are shown. Samples from the University of Iowa Musical Instruments Samples (MIS) were used.
These samples were analyzed by the non-harmonic Fourier analysis (SFA). The time resolution is 16ms and the frequency resolution 1Hz.
No.1 No.2
2015 March.
Original wave form data are from
http://theremin.music.uiowa.edu/MIS.html
[Publications]
Mikio Tohyama, "Waveform Analysis of Sound," Springer.com, Jan. 2015.

Y. Hara, Y. Takahashi, K. Miyoshi, Narrow-band envelope spectral analysis close to sound source (in Japanese). J. Inst. Elect. Inf. Comm. Eng. Jpn. J97-A(3), 221–223 (2014)

Satoru Goto, Yoshinori Takahashi, Mikio Tohyama, "Structural Vibration Monitoring Using Cumulative Spectral Analysis," Hindawi Publishing Corpotration, Advances in Acoustics and Vibration, Vol.2013, Article ID 158329, 7 pages.

Satoru Goto, Yoshinori Takarhashi, Mikio Tohyama, "Autocorrelation Analysis in Time and Frequency Domains for Passive Structural Diagnostics", Hindawi Publishing Corpotration, Advances in Acoustics and Vibration, Vol.2013, Article ID 204878, 8 pages.

Y. Hara, M. Tohyama, K. Miyoshi, Effects of temporal and spectral factors of maskers on speech intelligibility. Appl. Acoust. 73, 893–899 (2012)

Tomomi Hasegawa, Mikio Tohyama, "Analysis of Spectral and Temporal Waveforms of Piano-String Vibration," J. Audio Eng. Soc., Vol. 60, No. 4, pp. 237-245, 2012 April.

Tomomi Hasegawa, Mikio Tohyama, "Separation of zeros for source signature identification under reverberant path conditions," J. Acoust. Soc. Am., Vol.130, No.4, EL271-EL275, Oct. 2011.

Tomomi Hasegawa, Mikio Tohyama, "Source signature identification by using pole/zero modeling of transfer function. Inter Noise 2011, 431616 (2011).

Mikio Tohyama, "Sound and Signals," Springer.com, July 2011.


Research activities
Reseach consulting firm:  Wave Science Study(WSS)

Fellow, Inst. Elec. Inf. Comm. Engineers, Japan
Member, Acoust. Soc. Japan