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Journal of Speech, Language, and Hearing Research Vol.42 663-677 June 1999.
© American Speech-Language-Hearing Association
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Acoustic Characteristics of /s/ in Adolescents

Peter Flipsen Jr. 1
Lawrence Shriberg 1
Gary Weismer 1
Heather Karlsson 1

Jane McSweeny 1
1 Waisman Center University of Wisconsin-Madison

shriberg{at}waisman.wisc.edu

The goal of the current study was to construct a reference database against which misarticulations of /s/ can be compared. Acoustic data for 26 typically speaking 9- to 15-year-olds were examined to resolve measurement issues in acoustic analyses, including alternative sampling points within the /s/ frication; the informativeness of linear versus Bark transformations of each of the 4 spectral moments of /s/ (Forrest, Weismer, Milenkovic, & Dougall, 1988); and measurement effects associated with linguistic context, age, and sex. Analysis of the reference data set indicates that acoustic characterization of /s/ is appropriately and optimally (a) obtained from the midpoint of /s/, (b) represented in linear scale, (c) reflected in summary statistics for the 1st and 3rd spectral moments, (d) referenced to individual linguistic-phonetic contexts, (e) collapsed across the age range studied, and (f) described individually by sex.

KEY WORDS: acoustic phonetics, articulation, fricatives, phonology, speech disorders

Submitted on May 26, 1998
Accepted on October 1, 1998


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S. McLeod and J. Searl
Adaptation to an electropalatograph palate: acoustic, impressionistic, and perceptual data.
Am J Speech Lang Pathol, May 1, 2006; 15(2): 192 - 206.
[Abstract] [Full Text] [PDF]


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