[ToC]

 

Homer Dudley and T. H. Tarnoczy, "The Speaking Machine of Wolfgang von Kempelen," The Journal of the Acoustical Society of America 22.2: March, 1950

HEBREW LETTER M AS A TONGUE POSITION ACCORDING TO HELMONT

A century before von Kempelen's studies, Baron Franciscus Mercurius ab Helmont published a book in Latin contending that the Hebrew alphabet was a "natural" alphabet in that the letter symbols represented the actual tongue positions and so should be useful in teaching speech to the deaf-dumb. Von Kempelen reproduced four of Helmont's illustrations, one of which is shown here as Fig. 2 [right].