Phase Transitions in a Repetitive Speech Task as Gestural Recomposition

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Published: Nov 2, 2018
Keywords:
rate-induced change, gestural composition

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Kenneth de Jong
Byung-jin Lim
Kyoko Nagao

Abstract

This paper examines glottal movement data in rate-controlled repetitions of CV (onset consonant + vowel) and VC (vowel + coda consonant) structures. It replicates Tuller & Kelso?s (1991) observation of rate-induced phase transitions in glottal behavior. Specifically, for voiceless consonants peak glottal opening for CV?s are similar at fast and slow rates. The timing for VC?s at slow rates differs from that of CV?s, but changes at fast rates to become like CV?s. Additional aspects of rate-induced changes in glottal behavior were also found, however. For 'voiced' consonants, CV?s show the same change in glottal timing as do voiceless post-vocalic VC?s. In addition, apparent phase transitions may involve both the timing and magnitude of the gestures and as well as which glottal gestures the speakers implement. Hence, VC phase transitions also seem to involve a change in gestural composition, rather than just a re-coordination of the same gestures.

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Issue
Vol. 2 No. 1 (2002)
Section
Articles

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