Science Links Japan | Sound pressure distribution and propagation path in the vocal tract with the supraglottis and the pyriform fossa.

Sound pressure distribution and propagation path in the vocal tract with the supraglottis and the pyriform fossa.

Accession number;99A0285287

Title;Sound pressure distribution and propagation path in the vocal tract with the supraglottis and the pyriform fossa.

Author; NAKAI TAKAYOSHI (Shizuoka Univ., Fac. of Eng.) SATO KENJI (Shizuoka Univ., Fac. of Eng.) SUZUKI YASUNORI (Shizuoka Univ., Fac. of Eng.)

Journal Title;IEIC Technical Report (Institute of Electronics, Information and Communication Engineers)

Journal Code:S0532B

ISSN:0913-5685

VOL.98;NO.504(HIP98 39-51);PAGE.31-38(1999)

Figure&Table&Reference;FIG.10, TBL.1, REF.4

Pub. Country;Japan

Language;Japanese

Abstract;This paper describes acoustic characteristics of the vocal tract with the pyriform fossa and the sapraglottis analyzed by the finite element method(FEM). By 3D FEM model obtained by magnetic resonance image from the vocal folds to the velum when a subject uttered vowels/i/ and /u/, sound pressure distributions on some cross sections are shown at the first resonant frequency, 500Hz, and 2500Hz when the vocal folds are closed. Propagation paths in the vocal tract can be obtained by barycentric coordinates of particle velocity and of real part of sound intensity in the direction of sound propagation on the same cross section. The propagation paths by them are compared. (author abst.)

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