Possibilities of Diagnostic Research on Speech of People State of Alcohol Intoxication

Abstract

Author aimed to highlight a number of issues arising before forensic expert while forensic research on phonograms containing oral speech of persons, regarding diagnosis of the unusual state of the speaker: in the state of alcohol intoxication and determination of the degree of influence of  speaker’s intoxication state on possibility of conducting identification researches of the announcer while examination of video and sound recording. For achieving the goal, methods of scientific knowledge were used: observation, comparison, abstraction, analysis, synthesis, modeling, etc. Speech disorders have been observed in persons who are in a state of alcohol intoxication. Analysis of alcohol intoxication stages was carried out and their influence on the process of forming a person’s speech activity was determined. Patterns characteristic of the speech of people under influence of alcohol have been revealed. Variability specifics of voice formation and speech of a person under influence of alcohol were studied. Possibility of conducting identification researches based on physical parameters of oral speech, depending on degree of person intoxication was studied. Attention is focused on peculiarities of diagnosing speech of person who is in a state of mild, medium and severe degree of simple alcohol intoxication, and situational moments related to the speaker. As anatomical person speech apparatus creating  individual picture of a speech signal characteristic of a certain person, as speech behavior, skills, individual experience, intelligence, etc., which influence creation of an individual image of speaker in an unusual state alcohol intoxication, are considered. Factors whose variability affects characteristics of a person’s voice in various states of alcohol intoxication have been studied.