Haskins Publications

Number	830
Year	1992
Drawer	15
Entry Date	11/04/1999
Authors	Davies, P. O. A. L., McGowan, R. S., & Shadle, C. H.
Contact
Publication	In I. R. Titze (ed.), Vocal Fold Physiology: Frontiers in Basic Science. Singular Publishing Group, Inc. San Diego, CA. (pp. 93-142).
url	http://www.haskins.yale.edu/Reprints/HL0830.pdf
Abstract	[Introduction] During phonation, steady flow of air through the vocal tract is converted into pulsed flow, thereby creating sound for a listener. The conversion of the steady flow to pulsed flow, and the subsequent transport of the unsteady air motion in the vocal tract to the atmosphere, determine all the characteristics of the sound: its fundamental frequency and amplitude, its spectral composition, including upper harmonic content and noise, and the way these properties change with time. The mechanical properties and dynamics of the folds are important in determining the quality of the sound. Also important are the mechanical properties and dynamics of the unsteady air motion and interacting solid surfaces in the supralaryngeal tract, which determine the way that unsteady motion is transported through the air from the folds to the mouth. This is the subject of sound propagation, or in the terminology of speech scientists, the characteristics of the filter, as opposed to the source. In this paper we primarily consider propagation, and present a realistic computer model of the acoustical characteristics of the vocal tract.
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