13th Annual Conference of the International Speech Communication Association

Portland, OR, USA
September 9-13, 2012

Modeling Source-tract interaction in Speech Production: Voicing Onset vs. Vowel Height After a Voiceless Obstruent

Jorge C. Lucero (1), Laura L. Koenig (2), Susanne Fuchs (3)

(1) Dept. Computer Science, University of Brasilia, Brasilia, Brazil
(2) Haskins Laboratories, New Haven, CT, USA
(3) Center for General Linguistics (ZAS), Berlin, Germany

This paper shows that observed higher values of intraoral pressure at voicing onset of higher vowels vs. low vowels might be consequence of the acoustical coupling between the vocal fold oscillation and the vocal tract. The acoustical coupling is characterized by a simple model based on a lumped description of tissue mechanics, quasi-steady flow and one dimensional acoustics. The model predicts a "U"-shaped relation between the transglottal pressure at voicing onset and the ratio of voice fundamental frequency to the first formant, which reproduces the data with good approximation.

Index Terms: voicing onset, transglottal pressure, acoustical coupling, vowel height

Full Paper

Bibliographic reference.  Lucero, Jorge C. / Koenig, Laura L. / Fuchs, Susanne (2012): "Modeling source-tract interaction in speech production: voicing onset vs. vowel height after a voiceless obstruent", In INTERSPEECH-2012, 2198-2201.