title: Effects of repeated production on vowel distinctiveness within nonwords.
abstract: In the present study acoustic distinctiveness of vowels within nonwords with repeated production was investigated. Participants were 9 males and 15 females divided into two groups. Participants repeated 6 nonwords varying in phonemic composition. The mean Euclidean distance (MED) of the vowels from each production of a nonword from the center of the F1/F2 space was calculated. The changes in MED with repeated production were analyzed using linear mixed effects regression. Results revealed an increase in MED, indicating greater vowel dispersion, for the three-syllable nonwords and a significant decrease, i.e., greater reduction, in vowel dispersion for the six-syllable nonwords. Findings support the dynamic influence of sublexical processes on phonetic realization in speech production.
authors.affiliation: Department of Speech, Language, Hearing Sciences, University of Minnesota, 164 Pillsbury Drive Southeast, Minneapolis, Minnesota 55455, USA. sasis001@umn.edu
authors.forename: Jayanthi
authors.initials: J
authors.lastname: Sasisekaran
authors.forename: Benjamin
authors.initials: B
authors.lastname: Munson
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D010700:Phonetics; D013060:Speech / Q000502:physiology*; D013061:Speech Acoustics; D013068:Speech Production Measurement / Q000379:methods; D055815:Young Adult