PMID: 9430760Feb 12, 1998Paper

Phonetic category structure of [I]: extent, best exemplars, and organization

Journal of Speech, Language, and Hearing Research : JSLHR
J E Sussman, B Gekas

Abstract

The current investigation examined the structure of the phonetic category [I] for 13 listeners. Experiments reported are results from identification, "best exemplar," and discrimination tasks using 105 [I] stimuli. The tokens were synthesized long a mel-spaced vowel continuum that differed in first and second formants. All stimuli ended in a 30 ms [b] sound. Results showed that 10 of 13 listeners demonstrated differing choices of the best exemplars, although most were within 37.5 mels of the central best exemplar chosen in the first experiment. Seven of the participants demonstrated "circular" patterns in identification of the [I] category that appeared to be organized around a central "best exemplar." Six participants showed other identification patterns: "downward," "upward," and "left-extending," with "best exemplars" on an edge or border of the phonetic categories. Graded category structure from a central "best exemplar" was apparent only in the averaged identification results, and not for individual participants. The size of the [I] category was significantly smaller than that surrounding the [i] best exemplar reported in a prior study by Sussman and Lauckner-Morano (1995). Finally, listeners had equivalent or better discr...Continue Reading

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Citations

Aug 18, 2001·The Journal of the Acoustical Society of America·J D Harnsberger
Apr 10, 2004·Journal of Speech, Language, and Hearing Research : JSLHR·Frank H GuentherJason A Tourville
Feb 11, 2000·Journal of Speech, Language, and Hearing Research : JSLHR·E M FriedaM E Sloane
May 26, 2016·Psychonomic Bulletin & Review·Yakov KronrodNaomi H Feldman

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