Speech recognition system using technology that implicitly adapts to the speaker

摘要

A voice recognition (VR) system is disclosed that utilizes a combination of speaker independent (SI) (230 and 232) and speaker dependant (SD) (234) acoustic models. At least one SI acoustic model (230 and 232) is used in combination with at least one SD acoustic model (234) to provide a level of speech recognition performance that at least equals that of a purely SI acoustic model. The disclosed hybrid SI/SD VR system continually uses unsupervised training to update the acoustic templates in the one ore more SD acoustic models (234). The hybrid VR system then uses the updated SD acoustic models (234) in combination with at least one SI acoustic model (230 and 232) to provide improved VR performance during VR testing.