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Toward articulatory-acoustic models for liquid approximants based on MRI and EPG data. Part II. The rhotics

Summary: Toward articulatory-acoustic models for liquid approximants
based on MRI and EPG data. Part II. The rhotics
Abeer Alwana)
and Shrikanth Narayananb)
Speech Processing and Auditory Perception Laboratory, Department of Electrical Engineering,
School of Engineering and Applied Sciences, UCLA, 405 Hilgard Avenue, Los Angeles, California 90095
Katherine Haker
Imaging Medical Group, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, Los Angeles,
California 90048
Received 11 March 1996; accepted for publication 26 September 1996
Magnetic resonance images of the vocal tract during sustained production of [ by four native
American English talkers are employed for measuring vocal-tract dimensions and for morphological
analysis of the 3D vocal tract and tongue shapes. Electropalatography contact profiles are used for
studying inter- and intra-talker variabilities. The vocal tract during the production of [ appears to
be characterized by three cavities due to the presence of two supraglottal constrictions: the primary
one in the oral cavity, and a secondary one in the pharyngeal cavity. All subjects show a large
volume anterior to the oral constriction, which results from an inward-drawn tongue body, an
anterior tongue body that is characterized by convex cross sections, and a concave posterior tongue
body shape. Inter-subject variabilities are observed in the oral-constriction location and the way the
constriction is formed. No systematic differences are found between the 3-D vocal tract and tongue


Source: Alwan, Abeer - Electrical Engineering Department, University of California at Los Angeles
Narayanan, Shrikanth S. - Department of Electrical Engineering, University of Southern California


Collections: Computer Technologies and Information Sciences