Abstract
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.
Abstract (translated)
本文描述了对二维动态发音模型DYNARTmo的扩展，通过整合硬腭穹顶的内部三维表示来估算从舌中切面轮廓到软腭接触区域的位置。文中实现了两种替代性的穹顶几何形状——半椭圆和基于余弦曲线的轮廓——以在冠状平面上模拟侧向曲率。利用这些几何结构，对于每个前后位置，可以计算出侧向接触点，并在2D+框架内生成类似于电感式腭图（electropalatography）的可视化效果。增强后的模型支持三种同步视图（舌中切面、声门和软腭），适用于静态和动态（动画）发音展示，在言语科学研究与言语治疗方面具有应用价值。未来的工作将包括添加面部（唇部）视图以及实现发音到声学合成，以定量评估模型的真实度。
URL
https://arxiv.org/abs/2508.07262
