Issues in Using Models for Self Evaluation and Correction of Speech

The design of computer-based systems for training purposes requires the necessity of taking into account the different worlds in which the actors operate. In this paper, we deal with speech correction involving a therapist (“the orthophonist”), the trainee, and a technical aid performing extraction and visual displays of speech features. We want to point out some common-sense issues that appear as essential for designing such computer-based systems: the matching between those different worlds, the choice of reference patterns to which the subject’s utterances will be compared, the orthophonic check and the definition of a norm which could be considered as a target to be reached by the subject, the matching of the norm with the reference patterns, the matching between the vocal utterances and their technical equivalent, the settlement, and then, the management of a speech education program adapted to the trainee.