Department of Linguistics
Max Planck Institute for Evolutionary Anthropology
Deutscher Platz 6
phone: +49 (0) 341 3550 - 300
fax: +49 (0) 341 3550 - 333
Statistical modeling of trajectories and shapes applied to speech
Speech unfolds in time and there are many reasons to move away from a static characterization of speech patterns. This is a technical issue with deep theoretical implications, because static characterizations are not informative enough if we want to study speech in a dynamical framework. To model speeech data as multivariate trajectories, we follow Morriss and Carroll (2006) and use functional mixed models based on isomorphic transformations of the oberved data. Curves or images are represented by configurations of independent coefficients. These coefficients are the dependent variables in multivariate Bayesian mixed models with fixed and random factors.
Lancia, L. & Tiede M. (2012). A survey of methods for the analysis of the temporal evolution of speech articulator trajectories, in Fuchs, Weihrich, Pape, Perrier (ed.s) Speech Planning and Dynamics. (Peter Lang).
Lancia, L., Fuchs, S., & Rochet-Capellan, A. Quantification of speech convergence through non-linear methods for the analysis of time-series. International Symposium on imitation and convergence in speech, Aix en Provence, France, September 2012 (Poster presentation)