Relationships between the vocal fold vibration parameters and voice intensity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73627954" target="_blank" >RIV/61989592:15310/24:73627954 - isvavai.cz</a>
Result on the web
<a href="https://obd.upol.cz/id_publ/333207841" target="_blank" >https://obd.upol.cz/id_publ/333207841</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Relationships between the vocal fold vibration parameters and voice intensity
Original language description
Increase of voice intensity is related to changes in vocal fold oscillations.Knowledge about these changes has been insufficient. This study aimed at investigating the quantitative changes in vocal fold oscillations in a healthy female subject when continuously changing the intensity of voice at a constant pitch (i.e., the crescendo phonation). For purpose of this study, we recorded the phonations through the whole pitch range of the subject by high-speed videolaryngoscopy (7200 fps) synchronized with calibrated microphone signals. From the high-speed videos, we created videokymograms from which we obtained the parameters of vocal fold vibrations such as the vibration amplitude, open quotient Qo, opening quotient Qog, closing quotient Qcg, speed quotient Qs, normalized amplitude quotient NAQ, vertical phase difference VPD between the lower and upper margin of the vocal folds, and phase difference between the vibrations of the left and right vocal folds LRPD. With increasing intensity there was the tendency of increasing vibratory amplitude and VPD, anddecreasing Qo and Qog. However, these trends were not obvious in all the phonations, revealing on a complexity of human voice production.
Czech name
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Czech description
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Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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