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Computer modeling of effects of vocal exercising with a tube on vocal tract sound power transfer
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SYSNO ASEP 0350559 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Computer modeling of effects of vocal exercising with a tube on vocal tract sound power transfer Author(s) Horáček, Jaromír (UT-L) RID, ORCID
Vampola, T. (CZ)
Laukkanen, A. M. (FI)
Švec, J. G. (CZ)Source Title Interaction and Feedbacks 2010 - Proceedings. - Prague : Institute of Thermomechanics AS CR, v.v.i, 2010 / Zolotarev I. - ISBN 978-80-87012-29-1 Pages s. 29-38 Number of pages 10 s. Action Interaction and Feedbacks 2010 /17./ Event date 23.11.2010-24.11.2010 VEvent location Prague Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords FEM ; biomechanics of voice ; acoustic Subject RIV BI - Acoustics R&D Projects GA101/08/1155 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation Two 3D finite element (FE) models were constructed, based on CT measurements of a subject phonating on [a:] before and after phonation into a tube. Acoustic analysis was performed exciting the models by acoustic flow velocity at the vocal folds. The generated acoustic pressure of the response was computed in front of the mouth and inside the vocal tract for both FE models. Average amplitudes of the pressure oscillations inside the vocal tract and in front of the mouth were compared to display a cost-efficiency of sound energy transfer at different formant frequencies. Comparison of the pressure oscillation inside and outside the vocal tract showed that formants differ in their efficiency, F4 (at about 3.5 kHz, i.e. at the speaker’s or singer’s formant region) being the most effective. The results suggest that exercising on semi-occlusions help in improving the vocal economy. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
Number of the records: 1