Electropalatography

 epg_palate Electropalatography pseudo-palate

96 electrodes on the pseudo-palate surface detect tongue contact.
 epg_palate_in_mouth Pseudo-palate in place in the subject’s mouth
 epg_data_365 EPG response for one time frame

Electrodes showing tongue-palatal contact are red, and electrodes without contact are shown in blue.
 epg_multiimage EPG series for a subject during speech

The subject here is saying “My pal Al saw...”.
 epg_movie_image‌ EPG movie

“My pal Al saw the S.S. Pinafore”

With due respect to Her Majesty Queen Victoria, the S.S. designation was used for purely phonetic reasons.