Realization and evaluation of two speech communication aids

Two projects dealing with the possibilities of speech communication aids for the speech impaired will be discussed in this paper. Since the group of speech impaired is very diverse, the two projects differ in target group, in the speech technology used and consequently in the complexity of input of the aids. In both projects (Tiepstem and Pocketstem) experimental models and in one project (Pocketetem) prototypes have been realized. All models were eval uated with potential users. This paper describes the aids, their evaluation, the evaluation results and finally some conclusions and future plans.