This command combines three commands into one:
The resulting new Sound will appear selected in the list of objects.
Vocal tract length estimation was adapted from the procedure described at:
http://www.languagebits.com/phonetics-english/resonant-frequencies-and-vocal-tract-length/
Vocal tract size change was adapted from the script "VTchange" by Chris Darwin,
https://groups.io/g/Praat-Users-List/files/Darwin%20scripts