Abstract
Coarticulation effects of post-consonantal vowels on the place of tongue contact for American English velar and alveolar stop consonants were examined through simultaneous measurements with a new type of electropalatography (EPG) and with spectral analysis. The EPG system, developed by the author, has 49 electrodes, and is used to observe lingual contact with the soft palate, hard palate, and upper incisal teeth. It can record the palatograms at a 7.8-ms frame interval. The resulting palatograms can be compared with acoustic spectra made from simultaneous speech recordings. One American male subject produced VCV utternances in which the consonants were /k/, /g/, /t/, and /d/, and the vowels were /a/, /o/, /u/, /e/, and /i/. The results confirm that the tongue contact position for American English velar stop consonants is more strongly influenced by the vowels following it than for alveolar stop consonants. The value of F2 around the release burst was consistent with the strong coarticulation effects observed with the EPG.
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