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  • Frisian Phonetics

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  • Visible Vowels (2017-05-29)

    This program enables the user to visualize f0 contours, to plot vowels in the F1/F2 space for multiple points in the vowel interval, e.g. at 20%, 50% and 80%, and to visualize vowel durations. (The tool is implemented in R. We used the following packages: phonR, gplots, plotrix, lattice, readxl, WriteXLS, DT, psych and pracma. We thank the developers of these packages.)