Mid-sagittal cut to area function transformation: direct measurements of mid-sagittal distance and area with MRI

摘要

This paper presents a comparative study of transformation used to compute the area of cross-sections of the vocal tract from the mid-sagittal measurements of the vocal tract. MRI techniques have been used to obtain both mid-sagittal distances and cross-sections of the vocal tract for French oral vowels uttered by two subjects. The measured cross- sectional areas can thus be compared to the cross-sectional areas computed by the different transformations. The evaluation is performed with a jackknife method where the parameters of the transformation are estimated from all but one measurement of a speaker's vocal trace region and evaluated on the remaining measurement.