Voice onset time of velar stop productions in aged speakers.
Voice onset time (VOT) was measured for voiced and voiceless velar stop consonants across three vowel contexts (/i, a, u/) in healthy young adult and older subjects. Analysis showed that mean VOT values for both /k/ and /g/ across the three vowel contexts did not differ between the two groups; however, differences in VOT variability (standard deviation) approached significance; the older subjects exhibited increased variability. This apparent increase in variability may be related to the subtle anatomical and physiological changes with age.
Petrosino
L
L
Department of Communication Disorders, Bowling Green State University, OH 43403.
Colcord
R D
RD
Kurcz
K B
KB
Yonker
R J
RJ
D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D010160:Palate, Soft / Q000502:physiology*; D010699:Phonation; D010700:Phonetics; D013060:Speech / Q000502:physiology*; D013061:Speech Acoustics; D013068:Speech Production Measurement; D014831:Voice