Effects of repeated production on vowel distinctiveness within nonwords

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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.

Original languageEnglish (US)
Pages (from-to)EL336-EL341
JournalJournal of the Acoustical Society of America
Issue number4
StatePublished - Apr 2012

Bibliographical note

Funding Information:
This research was supported by NIH Grant No. R03 DC010047, awarded to J.S. We thank Katie Lauritzen, Hoang Truong, and Audrey Allman for data collection and analysis.


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