Second International Conference on Spoken Language Processing (ICSLP'92)

Banff, Alberta, Canada
October 13-16, 1992

Measurement of Intraoral Sound Pressure Distributions of Japanese Vowels

Kunitoshi Motoki (1), Nobuhiro Miki (2)

(1) Faculty of Engineering, Hokkai-Gakuen University, Sapporo, Japan
(2) Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan

in this paper the distributions of sound pressure in the oral cavity are studied based on acoustic measurement which was performed by inserting a probe microphone into the oral cavity during steady-state utterance of the Japanese vowels /a/ and /o/. The actual sound pressure levels and the relative distributions of sound pressure on the midsagittal plane for these vowels are presented. By using the results of our previous measurement using a plaster replica of the oral cavity, 2-dimensional sound pressure distribution for /a/, which approximates the measured midsagittal sound pressure curve, is also computed. The computed pressure distribution agrees with the measured data to within 2 dB differences when an average asymptotic decay of 6 dB/oct is given.

Full Paper

Bibliographic reference.  Motoki, Kunitoshi / Miki, Nobuhiro (1992): "Measurement of intraoral sound pressure distributions of Japanese vowels", In ICSLP-1992, 851-854.