The effect of speaking rate on consonant vowel coarticulation

In 2007 Lindblom et al. introduced a methodological tool to disentangle consonant-vowel (CV) coarticulation attributable to emphatic stress apart from the vowel expansion effects known to accompany the prosodic overlay. After empirically accounting for the altered vowel positions, they reported smal...

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Bibliographic Details
Published in:Phonetica Vol. 65; no. 4; p. 194
Main Authors: Agwuele, Augustine, Sussman, Harvey M, Lindblom, Bjorn
Format: Journal Article
Language:English
Published: Switzerland 01.01.2008
Subjects:
Adult
Female
Fourier Analysis
Humans
Male
Phonation
Phonetics
Sound Spectrography
Speech Articulation Tests
Speech Production Measurement
Verbal Behavior
Young Adult
ISSN:1423-0321, 1423-0321
Online Access:Get more information
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Summary:In 2007 Lindblom et al. introduced a methodological tool to disentangle consonant-vowel (CV) coarticulation attributable to emphatic stress apart from the vowel expansion effects known to accompany the prosodic overlay. After empirically accounting for the altered vowel positions, they reported small but consistent increases in F2 transition onsets in emphatically produced CVs that could not be attributed to vowel context influences, and that differed across stop place. At issue is whether the findings of these authors can be replicated, but in the opposite direction, for CVs produced at fast speaking rates. A modified locus equation regression metric was similarly used to account for rate-induced vowel reduction effects in predicting frequencies of F2 transition onsets in rapid speech. Six American-English speakers produced [V1.CV2] sequences embedded in a carrier sentence, at three speaking tempos: normal, fast, and fastest. Significant differences were found between 'predicted' and 'observed' F2 onsets across stops, with alveolars and velars showing greater decreases in F2 onsets during more rapid speech than labials. The complementary findings are discussed relative to a unified view of anticipatory coarticulation in CV production across a continuum of hyperarticulated spectral expansion to hypoarticulated spectral reduction.
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ISSN:1423-0321
1423-0321
DOI:10.1159/000192792