Articulatory speech recognition
Articulatory speech recognition means the recovery of speech from acoustic signals with the help of articulatory modeling or an extra input of articulatory movement data. Speech recognition means the recovery of speech from acoustics only. Articulatory information is extremely helpful when the acoustic input is in low quality, perhaps because of noise or missing data.
Measurable information from the articulatory system can supplement acoustic signals to improve phone recognition accuracy by 2%. However, attempts to estimate articulatory data from acoustic signals alone have not significantly enhanced recognition performance.