Speech Prosody 2010
Chicago, IL, USA
Prosodic boundary gestures (pi-gestures) (Byrd & Saltzman, J. Phon., 2003) have been introduced to model the local slowing or lengthening of articulatory gestures in the vicinity of phrase boundaries. In this paper, pi-gestures are simulated within the TaDA task dynamics computational model and examined using functional data analysis (FDA) to evaluate articulatory lengthening in terms of underlying pi-gesture activation duration and strength from a realistic control model. A new derived variable of deformation index (area under FDA time-deformation functions) is shown to capture differences in π-gesture effect due to boundary strength.
Index Terms: pi-gesture, phrase boundaries, prosodic lengthening, functional data analysis
Bibliographic reference. Parrell, Benjamin / Lee, Sungbok / Byrd, Dani (2010): "Evaluation of juncture strength using articulatory synthesis of prosodic gestures and functional data analysis", In SP-2010, paper 333.