Computer modeling of effects of vocal exercising with a tube on vocal tract sound power transfer

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F10%3A00350559" target="_blank" >RIV/61388998:_____/10:00350559 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/10:10215349
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Computer modeling of effects of vocal exercising with a tube on vocal tract sound power transfer
Original language description
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 formantregion) being the most effective. The results suggest that exercising on semi-occlusions help in improving the vocal economy.
Czech name
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Czech description
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Project
<a href="/en/project/GA101%2F08%2F1155" target="_blank" >GA101/08/1155: Computer and physical modelling of vibroacoustic properties of human vocal tract for optimization of voice quality</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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