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Bifurcation phenomena in vocal fold vibrations - experiments in vitro
Horáček, Jaromír ; Švec, J. ; Veselý, Jan
The study presents experimental investigations focused on monitoring of the non-linear vibration effects, especially bifurcation phenomena in the vibration of human vocal folds. The experiments were performed with excised human larynges excited by airflow. Sudden changes between different regimes of the vocal fold vibration were observed when smoothly changing the tension of the vocal folds. The study reveals further details on the nature of sudden changes between voice registers. The results also point out the possible relationship between regular (physiologic) and irregular (pathologic) vocal fold oscillations.

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