The invention discloses an interactive virtual teacher
system having an intelligent error correction function, which is designed for solving the technical problem that the conventional man-
machine interaction teaching is limited to
speech synthesis information and
spoken language evaluation and cannot satisfy the need for intelligent error collection interaction in learning and communication. Thesystem comprises an audio and video
data acquisition module, an information identification module, an error correction evaluation module, a teaching policy module and other modules. An audio sensor and a video sensor acquire the face images and voice signals of learners; the information identifies fused mouth shapes, pronunciation and emotion of the learners; the error collection evaluation module automatically evaluates the pronunciation mouth shapes of the learners and detects the differences between pronunciation
mouth shape data and standard data stored in a standard pronunciation
mouth shape databases, automatically selects a
proper time to show the reasons of incorrect pronunciation and correction means and provides a correct pronunciation
mouth shape and animated demonstration; andthe teaching policy module makes a teach-student one-by-one interactive personalized teaching implementation solutions according to
evaluation data and emotion states. In the invention, real-time communication and animated demonstration are realized by fusing voice and emotion multi-source information and by intelligent error correction and
simulation by video interaction with a virtual teacher. Thus, the accuracy of pronunciation teaching is improved.