The 2D+ Dynamic Articulatory Model DYNARTmo: Tongue-Palate Contact Area Estimation
This provides a tool for speech science education and therapy by enabling synchronized 2D+ visualizations of articulation, though it is incremental as it builds on an existing model.
The paper extended the DYNARTmo articulatory model by adding a 3D palatal dome representation to estimate tongue-palate contact areas from 2D tongue contours, implementing two geometric profiles (half-ellipse and cosine) to compute lateral contact points and generate electropalatography-like visualizations.
This paper describes an extension of the two-dimensional dynamic articulatory model DYNARTmo by integrating an internal three-dimensional representation of the palatal dome to estimate tongue-palate contact areas from midsagittal tongue contours. Two alternative dome geometries - a half-ellipse and a cosine based profile - are implemented to model lateral curvature in the coronal plane. Using these geometries, lateral contact points are analytically computed for each anterior-posterior position, enabling the generation of electropalatography-like visualizations within the 2D+ framework. The enhanced model supports three synchronized views (sagittal, glottal, and palatal) for static and dynamic (animated) articulation displays, suitable for speech science education and speech therapy. Future work includes adding a facial (lip) view and implementing articulatory-to-acoustic synthesis to quantitatively evaluate model realism.