Abstract
In the past, much articulatory movement data have been obtained using the x‐ray microbeam. Currently, however, magnetometer systems such as EMMA are becoming predominant. A unique data set, addressing concerns of consistency between these instruments is reported. A single speaker was recorded with both instruments reading the same utterances: ‘‘It’s a [pV’CVp] again.’’ Data from two x‐ray microbeam (XRMB) runs were collected on the same day (pellets re‐placed for the second run); 27 months later the parallel EMMA data were collected. Vertical movement of the lower lip, tongue tip, and tongue body during the VCV’s was analyzed. Extrema positions (amplitudes) and distance and time between these positions (gestural displacements and durations) were obtained. The results demonstrate that the correlation between EMMA and XRMB runs is very high, almost as high as that between the two XRMB runs. Using further analyses of variance it was concluded confidently that the results obtained using EMMA for articulatory data collection do not differ substantially from those obtained for similar data collected at different time with the x‐ray microbeam. [Work supported by NIH].
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