The effect of phonation into a straw on the vocal tract adjustments and formant frequencies. A preliminary MRI study on a single subject completed with acoustic results

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F12%3A00373267" target="_blank" >RIV/61388998:_____/12:00373267 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/12:33139111
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S1746809411000097" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1746809411000097</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.bspc.2011.02.004" target="_blank" >10.1016/j.bspc.2011.02.004</a>

Result language
angličtina
Original language name
The effect of phonation into a straw on the vocal tract adjustments and formant frequencies. A preliminary MRI study on a single subject completed with acoustic results
Original language description
Phonation into a straw is used in voice training and therapy. This study investigated its? effect on the vocal tract adjustments. Magnetic resonance images were taken from one female phonating first on [a:], then into a plastic drinking straw and then again [a:]. Acoustic samples were recorded from her and 10 other females. The samples were analyzed for fundamental frequency, sound pressure level (SPL), five lowest formant frequencies (F1-F5) and SPL of the speaker?s formant cluster range (2,5-4,5 kHz).During and after phonation into a straw, the midsagittal area of the vocal tract increased and the velar closure improved. The ratio of the transversal area of the lower pharynx over that epilarynx increased both during (27%) and after the straw (20%).The overall SPL of the speaker?s formant cluster increased. The frequencies of F2, F4 a F5 decreased, while F3 increased. The distances between F4 and F3 and F5 and F4 decreased by 49%. For the 10 subjects, F3 increased, F4 decreased and
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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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
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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