Social and Behavioral Sciences Commons^™

Economy Of Effort In Different Speaking Conditions. I. A Preliminary Study Of Intersubject Differences And Modeling Issues, Joseph S. Perkell, Majid Zandipour, Melanie L. Matthies, Harlan Lane

Harlan Lane

This study explores the hypothesis that clear speech is produced with greater "articulatory effort" than normal speech. Kinematic and acoustic data were gathered from seven subjects as they pronounced multiple repetitions of utterances in different speaking conditions, including normal, fast, clear, and slow. Data were analyzed within a framework based on a dynamical model of single-axis frictionless movements, in which peak movement speed is used as a relative measure of articulatory effort (Nelson, 1983). There were differences in peak movement speed, distance and duration among the conditions and among the speakers. Three speakers produced the "clear" condition utterances with movements …