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Updated: May 23, 2026

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Published on: July 13, 2019
Effects of repeated production on vowel distinctiveness within nonwords
Jayanthi Sasisekaran1, Benjamin Munson
1Department of Speech, Language, Hearing Sciences, University of Minnesota, 164 Pillsbury Drive Southeast, Minneapolis, Minnesota 55455, USA. sasis001@umn.edu
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.
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