Stem vowel$ (all stems)
2 papers:
ICPR-2010-SaitohK #recognition #word- Profile Lip Reading for Vowel and Word Recognition (TS, RK), pp. 1356–1359.
ICEIS-HCI-2007-ArjunanWKY #human-computer #recognition #speech #using- Silent Bilingual Vowel Recognition — Using fSEMG for HCI based Speech Commands (SPA, HW, DKK, WCY), pp. 68–78.