Gestural overlap of stop-consonant sequences

Engineering and Computer Science This study used an analysis-by-synthesis approach to discover possible principles governing the coordination of oral and laryngeal articulators in the production of English stop-consonant sequences. Recorded utterances containing stop-consonant sequences were analyzed acoustically, with focus on formant movements, closure durations, release bursts, and spectrum shape at low frequencies. The results of the acoustic analysis were translated into general gestural timing estimates. From these estimates, a set of possible principles was derived. Both the general gestural estimates and the derived principles were verified and refined through quasi-articulatory synthesis using HLsyn. Perception tests composed of synthetic sequences with varying degrees of overlap were administered. From acoustic analysis, synthesis verification, and perception testing, two principles emerged. First, V1C1#C2V2 stop-consonant sequences with front-to-back order of place of articulation have more overlap of articulators than those with back-to-front order; this agrees with past research findings (Chitoran, Goldstein, and Byrd, 2002)