Authors:

Kara Kent

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About Paper:

Recent research in speech production indicates that talkers rigidly control the relative timing of articulator movements across variation in production rate, syllable stress, and segmental makeup, and that this precision of inter-articulator timing control precisely specifies phonetic structure. To date, these timing relations have proven highly reliable for tongue-jaw kinematics. In the present study, we address the generality of these timing relations to lip-jaw kinematics. Eleven talkers recorded 240 /tV#Cat/ and 240 /bV#Cab/ utterances using electromagnetic articulography, with alternative V (/ɑ/-/ɛ/) and C (/t/-/d/), across changes in production rate (fast-normal) and stress (first syllable stressed- unstressed). To quantify inter-articulator temporal coordination, the timing of either tongue-tip or lower-lip raising onset for the intervocalic C, relative to the jaw opening-closing cycle for V, was obtained. Preliminary results (N=5) indicate that the same kinematic pattern occured in both types of utterances: any manipulation that shortened the jaw opening- closing cycle reduced the latency of either the tongue-tip or the lower-lip movement onset, relative to the onset of jaw opening. Furthermore, these timing relations were found to be differentiated by utterance type across both sets of supralaryngeal speech articulators, suggesting that timing relations between the tongue-tip and jaw may generalize to the lower-lip and jaw. Generalization of inter-articulator timing control:

Source:

University of Florida / Kara Kent, Ana Rodriguez, Hannah Thomas, Rosalie / 2023

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Co-authors:

Kara Kent