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Bézier modelling and high accuracy curve fitting to capture hard palate variation.

Janssen, R., Moisik, S. R., & Dediu, D. (2015). Bézier modelling and high accuracy curve fitting to capture hard palate variation. In Proceedings of the 18th International Congress of Phonetic Sciences (ICPhS 2015). Glasgow, UK: University of Glasgow.
The human hard palate shows between-subject variation that is known to influence articulatory strategies. In order to link such variation to human speech, we are conducting a cross-sectional MRI study on multiple populations. A model based on Bezier curves using only three parameters was fitted to hard palate MRI tracings using evolutionary computation. The fits produced consistently yield high accuracies. For future research, this new method may be used to classify our MRI data on ethnic origins using e.g., cluster analyses. Furthermore, we may integrate our model into three-dimensional representations of the vocal tract in order to investigate its effect on acoustics and cultural transmission.
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The Max Planck Institute for Psycholinguistics is an institute of the German Max Planck Society. Our mission is to undertake basic research into the psychological,social and biological foundations of language. The goal is to understand how our minds and brains process language, how language interacts with other aspects of mind, and how we can learn languages of quite different types.

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