Abstract
It has been demonstrated using the “silent-center” (SC) syllable paradigm that there is sufficient information in syllable onsets and offsets,taken together, to support accurate identification of vowels spoken in both citation-form syllables and syllables spoken in sentence context. Using edited natural speech stimuli, the present study examined the identification of American English vowels when increasing amounts of syllable onsetsalone or syllable offsetsalone were presented in their original sentence context. The stimuli were /d/-vowel-/d/ syllables spoken in a short carrier sentence by a male speaker. Listeners attempted to identify the vowels in experimental conditions that differed in the number of pitch periods presented and whether the pitch periods were from syllable onsets or syllable off-sets. In general, syllable onsets were more informative than syllable offsets, although neither onsets nor offsets alone specified vowel identity as well as onsets and offsets together (SC syllables). Vowels differed widely in ease of identification; the diphthongized long vowels /e/, /ae/, /o/ were especially difficult to identify from syllable offsets. Identification of vowels as “front” or “back” was accurate, even from short samples of the syllable; however, vowel "height" was quite difficult to determine, again, especially from syllable offsets. The results emphasize the perceptual importance of time-varying acoustic parameters, which are the direct consequence of the articulatory dynamics involved in producing syllables.
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This research was supported by NIDCD 00323 and NINCDS 22568. Research assistants for the study were Bruce Goshe, Elizabeth Lewis, Linda Katz, and Salvatore Miranda. Sonja Trent and David Thornton are thanked for assistance with the tables and figures.
—Accepted by previous editor, Myron L. Braustein
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Jenkins, J.J., Strange, W. Perception of dynamic information for vowels in syllable onsets and offsets. Perception & Psychophysics 61, 1200–1210 (1999). https://doi.org/10.3758/BF03207623
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DOI: https://doi.org/10.3758/BF03207623