This page describes tools for using a Smoothing Spline ANOVA to make formant comparisons. For detailed information about the intrepretation of the graphs the reader is refered to Davidson (2006).
We'll divide this into two parts, things you need to do once, and things you will do repeatedly.
Davidson, Lisa. 2006. Comparing tongue shapes from ultrasound imaging using smoothing spline analysis of variance. Journal of the Acoustical Society of America 120 (1): 407-415.
Adam Baker. 2006. Quantifying Diphthongs: a statistical technique for distinguishing formant contours. From NWAV 35.
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