ASA 127th Meeting M.I.T. 1994 June 6-10

1pSP28. Customized 3-D electropalatography display.

Cheng Cheng Saw

Phon. Lab., Dept. of Linguist., Univ. of California, Los Angeles, CA 90024

The result of the Kay Elemetrics palatometer, like all other EPG systems, can only be viewed on a standardized 2-D display. Yet, a 3-D display is often crucial to attribute aspects of the data to individual anatomy. Thus a display showing the time-varying contact information on a roughly customized 3-D image of the palate allowing views from all perspectives was developed. The main visualization program used, data explorer, provided enhanced methods of viewing data. Using the program, the palate was constructed as a wire-frame object defined by a set of x-y-z values interconnected by triangles. Likewise, the electrodes where contact was made appeared as little spheres superimposed onto the wire-frame object. The combined image in a sample or single frame of contact was saved as a TIFF file; the entire sequence of TIFF files from an utterance is then transferred onto the Macintosh and presented in a visual movie format along with audio aids. A study of taps and flaps illustrates data processed by this method. [Work supported by NSF.]