Article2004

The distinctness of speakers’ productions of vowel contrasts is related to their discrimination of the contrasts

Joseph S. Perkell · Frank H. Guenther · Harlan L. Lane · Melanie L. Matthies · Ellen Stockmann · Mark Tiede +1 more

161 citations0/0 files storedThe Journal of the Acoustical Society of America

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Phonetics and Phonology Research Linguistic Variation and Morphology Voice and Speech Disorders

Abstract

This study addresses the hypothesis that the more accurately a speaker discriminates a vowel contrast, the more distinctly the speaker produces that contrast. Measures of speech production and perception were collected from 19 young adult speakers of American English. In the production experiment, speakers repeated the words cod, cud, who'd, and hood in a carrier phrase at normal, clear, and fast rates. Articulatory movements and the associated acoustic signal were recorded, yielding measures of contrast distance between /a/ and /[see text for symbol]/ and between /u/ and /[see text for symbol]/. In the discrimination experiment, sets of seven natural-sounding stimuli ranging from cod to cud and who'd to hood were synthesized, based on productions by one male and one female speaker. The continua were then presented to each of the 19 speakers in labeling and discrimination tasks. Consistent with the hypothesis, speakers with discrimination scores above the median produced greater acoustic contrasts than speakers with discrimination scores at or below the median. Such a relation between speech production and perception is compatible with a model of speech production in which articulatory movements for vowels are planned primarily in auditory space.

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References

1998Language within our grasp 1952Control Methods Used in a Study of the Vowels 1997Training Japanese listeners to identify English / r / and / l /: IV. Some effects of perceptual learning on speech production 1998Sensorimotor Adaptation in Speech Production 1995Speech sound acquisition, coarticulation, and rate effects in a neural network model of speech production.1998A theoretical investigation of reference frames for the planning of speech movements.1992Electromagnetic midsagittal articulometer systems for transducing speech articulatory movements 2002Sensorimotor Adaptation of Speech I

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