Following is a site I found a week ago along the same lines. This one has
graphic plots of different vowel sounds.
http://www.cim.mcgill.ca/~clark/nordmodularbook/nm_modtech.html
-Elhardt
graphic plots of different vowel sounds.
http://www.cim.mcgill.ca/~clark/nordmodularbook/nm_modtech.html
-Elhardt