Abstract
This study investigated the acoustic phonetic characteristics of Korean diphthongs in 16 healthy controls, in 8 speakers with spastic dysarthria, and in 8 speakers with flaccid dysarthria. The subjects read /ja/, /wi/ and mean formant values were analyzed based on the spectrograms. The formant transition duration for the vowel /ja/ was longer for speakers with flaccid dysarthria than the control speakers and speakers with spastic dysarthria. When speaking the vowel /wi/, the tongues of speakers with flaccid and spastic dysarthria were pulled back more than those of control speakers. We observed that there are differences in the patterns of error observed in flaccid dysarthria and spastic dysarthria speakers.
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