We describe a workstation for diagnostic aid and rehabilitation in speech and voice pathologies. It is the adaptation of speech research experimental devices for a medical application. The workstation consists of a PC computer, equipped with acoustic and aerodynamic sensors. Different programs are designed for each clinical investigation procedure under Microsoft WINDOWS operating system. This apparatus allows to set the objective state of normal and pathological speech production, and for the evaluation of functional results of surgical, pharmacological, logopedic and prosthetic treatments of voice and speech disorders.