Haskins Publications

Number	1586
Year	2009
Drawer	27
Entry Date	04/26/2010
Authors	Derrick, D., Anderson, P., Gick, B., Green, S.
Contact
Publication	Journal of Acoustical Society of America, v. 125:no.4, pp. 2272-2281.
url	http://www.haskins.yale.edu/Reprints/HL1586.pdf
Abstract	Three dimensional large eddy simulations, microphone “pop” measurements, and high-speed videos of the airflow and lip opening associated with the syllable “pa” are presented. In the simulations, the mouth is represented by a narrow static ellipse with a back pressure dropping to 1/10th of its initial value within 60 ms of the release. The simulations show a jet penetration rate that falls within range of the pressure from of microphone pop. The simulation and high-speed video experiments were within 20% agreement after 40 ms, with the video experiments showing a slower penetration rate than the simulations during the first 40 ms. Kinematic measurements indicate that rapid changes in lip geometry during the first 40 ms underlie this discrepancy. These findings will be useful for microphone manufacturers, sound engineers, and researches in speech aerodynamics modeling and articulatory speech synthesis.
Notes