Mechanisms of irregular vibration in a physical model of the vocal folds.
Previous investigations have shown that one mechanism of irregular vocal fold vibration may be a desynchronization of two or more vibratory modes of the vocal fold tissues. In the current investigation, mechanisms of irregular vibration were further examined using a self-oscillating, physical model of vocal fold vibration, a hemi-model methodology, and high-speed, stereoscopic, digital imaging. Using the method of empirical eigen-functions, a spatiotemporal analysis revealed mechanisms of irregular vibration in subharmonic phonation and biphonation, which were not disclosed in a standard acoustic spectrum.
Berry
David A
DA
Zhang
Zhaoyan
Z
Neubauer
Juergen
J
D000162:Acoustics; D006801:Humans; D008953:Models, Anatomic; D008954:Models, Biological; D010507:Periodicity; D011312:Pressure; D012408:Rubber; D014132:Trachea / Q000502:physiology; D014732:Vibration; D014827:Vocal Cords / Q000502:physiology*
D012408:Rubber