Measurement and analysis techniques for the description of palatal shape
Martin J. McCutcheon, Akira Hasegawa, Samuel G. Fletcher · The Journal of the Acoustical Society of America · 1977
Descriptions of the spatial features of linguapalatal contact during speech production require accurate measurement of the shape of the palatal surface and location of contact electrodes. A technique is described for three-dimensional measurements utilizing stone models cast from impressions of a speaker's mouth. Measurements of the coordinates of points on the surface of the maxillary molars allow the calculation of a reference plane analogous to the occlusal plane derived from lateral x rays. Measured coordinate values with respect to this plane are used in an orthogonal function analysis to obtain parameters for the palatal surface description. Typical results and applications are illustrated and discussed. [Supported by NIH Grant NS-11852-01A from NINDCDS.]