Analysis of the human voice as a method of controlling emotional state: achievements and goals

Background factors and those of formant structure, spectral and spectro-temporal characteristics of rapid and slow speech components, temporal peculiarities, and intensity of speech turned out to be informative indices of the human emotional state. Application of mathematical methods, in particular methods of recognition theory, to these factors helped to assess the degree and the psychological sign of emotion, to diagnose the status of attention and fatigue, and to differentiate emotional and physical stress. The paper outlines the results obtained in model experiments on cosmonaut A. Leonov at different flight stages, including EVA, on Voskhod-2.