lnterarticulator Timing and Single-Articulator Velocity-Displacement in English Stress Pairs
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Publisher:Ohio State University. Department of Linguistics
Citation:Working Papers in Linguistics, no. 38 (1990), 67-87.
Models of speech production utilize mentalist accounts of speech phenomena to varying degrees. Especially noted in this paper are accounts of the timing of speech which have sought to eliminate altogether the temporal dimension from mental control. Two major parts of the theory--that in Harris et al. (1986), and that in Kelso et al. (1985)--are explained and tested using a body of X-ray microbeam tracings of articulatory movement in English stress pairs. The first study is a replication of Harris et al. Correlations between jaw movement periods and some variables indicative of the relative timing of lip and tongue-blade movement within the period duplicate those found in Harris et al. However, eliminating the effect of vocalic expandability and the effect of a part-whole relationship between the variables renders the results ineffective in showing the tested timing relationship. The second part replicates Kelso et al. (1985). The present study finds strong correlations between velocity and displacement in jaw movement, both in upward and downward movement, in tokens in normal and frame conditions. In addition, as in Kelso et al., downward movement in stressed syllables shows a shallower regression slope than does downward movement in unstressed syllables. However, in upward movement, the relationship is reversed.
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