Wikipedia
Revoicer
A revoicer provides communication assistance by carefully listening to the speech patterns uttered by an individual with a speech disability, using lipreading (speechreading) and attention to other cues if necessary for full understanding of the utterances, and then repeats the same words in a manner that is more clear and understandable to the listener. Revoicers generally have excellent skills in auditory phonetic/phonemic pattern recognition, similar to those utilized by a court reporter or stenographer, to identify the sounds of speech ( phonemic sounds) of the speaker.