Tvorba MKP modelů vokálního traktu pro české samohlásky

Tento článek se věnuje problematice tvorby MKP modelů lidskýchvokálních traktů pro české samohlásky. Tyto modely jsou potřebné promodální analýzu vokálních traktů. Geometrie byla získána nasnímánímpokusné osoby na MR v čase fonace příslušných hlásek.

This article is dealing with problems of creating FEM models of humanvocal tract of Czech vowels. The solution is connected to grant projectGA 106/98/K019. We need the FEM modelsfor modal analysis of vocal tract. To take geometry of vocal tract wehave scanned some person on MR. Scanning was in time of speaking ofspecified vowels. First step of creating FEM models was segmentation ofvocal tract from MR data. Result of segmentation are voxel models. Nextwas vectorization of the voxel models by Marching cubes method, witchproduce boundary of the voxel models, as a triangular meshes. Next themeshes was smoothed and decimated. Then we use them as a base forDelaunay triangulation. Results of the one are tetrahedral meshes. Laststep is optimizingquality of the tetrahedral meshes, to take final FEM models of vocaltract.