Method and apparatus for automatic cuing
Cornett, R. O., & Beadles, R. (1990). IPC No. U.S.Method and apparatus for automatic cuing (Patent No. 4972486.)
For hard of hearing people, speech sounds are recognized electronically and displayed on eyeglasses at syllable speed, consonants are shown as a symbol resembling a hand sign, and vowels by the symbol's location in a quadrant display, or by color.