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Important Regions in the Articulator Trajectory

This paper deals with identifying important regions in the articulatory trajectory based on the physical properties of the trajectory. A method to locate critical time instants as well as the key articulator positions is suggested. Acoustic-to-Articulatory Inversion using linear and non-linear regression isperformed using only these critical points. The accuracy of inversion is found to be almost the same as using all the data points.