Fifth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)

Florence, Italy
December 13-15, 2007

Estimation of Output-Cost–Ratio Using an Aeroelastic Model of Voice Production

Jaromír Horáček (1), A.-M. Laukkanen (2), P. Šidlof (1)

(1) Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
(2) Department of Speech Communication and Voice Research, University of Tampere, Tampere, Finland

The study deals with mathematical modeling of the vocal fold self-oscillations related to estimation of the so-called output-cost-ratio (OCR), which is computed from the numerically simulated sound pressure level at the glottal level and the impact stress (IS) during vocal folds collision. The dependence of OCR on prephonatory glottal width, fundamental frequency and lung pressure is discussed and partly compared with a modified output cost ratio measured in humans, where the closed quotient is used instead of IS.
Index Terms. Biomechanics of voice, numerical simulation of vocal folds vibration.

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Horáček, Jaromír / Laukkanen, A.-M. / Šidlof, P. (2007): "Estimation of output-cost–ratio using an aeroelastic model of voice production", In MAVEBA-2007, 105-108.