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Authors Zhang Y, Jiang JJ
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Journal J. Acoust. Soc. Am. Volume: 115 Issue: 3 Pages: 1266-9
Publish Date 2004 Mar
PubMed ID 15058347

A nonlinear model was proposed to study chaotic vibrations of vocal folds with a unilateral vocal polyp. The model study found that the vocal polyp affected glottal closure and caused aperiodic vocal fold vibrations. Using nonlinear dynamic methods, aperiodic vibrations of the vocal fold model with a polyp were attributed to low-dimensional chaos. Bifurcation diagrams showed that vocal polyp size, stiffness, and damping had important effects on vocal fold vibrations. An increase in polyp size tended to induce subharmonic patterns and chaos. This study provides a theoretical basis to model aperiodic vibrations of vocal folds with a laryngeal mass. Copyright © 2017 The Board of Regents of the University of Wisconsin System