A method to Determine Speech Intelligibility for Estimating Psycho-Emotional State of Control System Operators with a High Degree of Responsibility

Abstract

The paper presents a method for assessing psycho-emotional state of control system operators with a high degree of responsibility. The nature of the method is an adaptive decomposition of a speech signal into frequency bands of equal articulation, using the improved complete ensemble empirical mode decomposition with adaptive noise, and determination of formant intelligibility, as well as frequency, width, level, and quality factor of formant regions in these bands using formant analysis. A mathematical description of the decomposition and a simplified block diagram of the proposed method are briefly presented. The study was conducted using the formed base of phonetically balanced speech signals recorded in healthy people, and people with psycho-emotional disorders, both male and female, aged from 18 to 79. According to the results of the study, the developed method provides a high detection accuracy of psycho-emotional disorders: the error of the first kind is 8.16%, and the error of the second kind is 5.66%.