Temporally Variable Multi attribute Morphing of Arbitrarily Many Voices for Exploratory Research of Speech Prosody

Morphing provides a flexible research strategy for non- and para linguistic aspects of speech. Recent extension of the morphing procedure has made it possible to interpolate and extrapolate physical attributes of arbitrarily many utterance examples. By using utterances representing typical instantiation of the non- and para linguistic information in question and introducing systematic perturbation of trajectories in a high-dimensional space spanned by a set of indexed weights for the physical parameters of utterances, the physical correlates of such information can be represented in terms of a differential geometrical concept. Formulation of this extended morphing framework in generalized representations and a few representative cases of applications are discussed with comments on the limitations of the current implementation and possible solutions.