Some Acoustic and Physiological Observations on Diphthongs

This paper presents an analysis of some articulatory properties of (Dutch) diphthongs, attempting to correlate articulatory inferences based on perceptual and acoustic data with more direct physiological measurements (recordings of EMG activity). Evidence is presented that supports a distinction between "genuine" and "pseudo" diphthongs: the two classes appear to differ (1) in openness and advancement at their onsets and offsets, (2) in the harmony of tongue position between the beginning and ending configurations, and (3) possibly also in the number of articulatory gestures involved.