CDIS 4313 Study Guide - Quiz Guide: Fundamental Frequency, Vocal Folds, Vocal Tract
1 Mar 2017
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Document Summary
The vocal folds act as a sound generator by vibrating the air coming through the larynx from the lungs, thus setting up a sound wave in the vocal tract. Proposed in 1950: most widely accepted model of voice production, describes voice production as an interaction of: To initiate vocal fold vibration, the vocal folds must adduct to close the glottis: achieved by the lca and ia muscles. Due to the narrow pathway of the glottis during the closing of the vocal folds the air passing through becomes negative in pressure due to the bernoulli principle. Bernoulli principle gas passing through a narrow channel increases in velocity and. Subglottal pressures beneath the glottis decreases in pressure. One opening and closing of the glottis constitutes one cycle of vocal fold vibration. The cycle of vibration can be thought of as consisting of four phases of vocal fold movement, also known as the duty cycle: opening, open, closing, closed.
