Potapova R.K., Potapov V.V., Kuryanova I.V. Non-Verbal Information Interpretation in Speech Portraiture (Exemplified by Oral Speech)

DOI: https://doi.org/10.15688/jvolsu2.2025.5.11

Rodmonga K. Potapova

Doctor of Sciences (Philology), Professor, Academician, International Academy of Informatization, Professional Member, International Association for Forensic Phonetics and Acoustics (IAFPA), Director of the Institute of Applied and Mathematical Linguistics, Moscow State Linguistic University, Moscow, Russia

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https://orcid.org/0000-0002-7532-9156

Vsevolod V. Potapov

Doctor of Sciences (Philology), Leading Researcher, Experimental Phonetic Laboratory of Forensic Speech Science, Institute of Applied and Mathematical Linguistics, Moscow State Linguistic University, Moscow, Russia

Honored Researcher, Senior Researcher, Educational and Scientific Computer Center, Faculty of Philology, Lomonosov Moscow State University, Moscow, Russia

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https://orcid.org/0000-0002-8344-8673

Irina V. Kuryanova

Candidate of Sciences (Philology), Head of the Experimental Phonetic Laboratory of Forensic Speech Science, Institute of Applied and Mathematical Linguistics, Moscow State Linguistic University, Moscow, Russia

Head of the Forensic Speech Science Department, Moscow Research Center, Moscow, Russia

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https://orcid.org/0000-0003-3698-3013

Abstract. Within the domain of modern linguistics, the interpretation of oral speech in the context of speech portraiture (profiling) occupies a distinguished position. Typically, experts in the field of sound text research identify a series of linguistic characteristics that are indicative of spontaneous and prepared oral speech. A significant contemporary forensic and criminalistics issue is the interpretation of the oral text for the purpose of ascertaining the emotional state of the speaker. The research aims to substantiate the applicability of acoustic methods to identifying acoustic-and-linguistic parameters that are relevant for determining the degree of spontaneity/preparedness of utterances with regard to the emotional state of the speaker. The article introduces the results of testing instrumental methods applied to speech portraiture tasks employing the specialized sound editor SIS II (developer – Speech Technology Center, St. Petersburg), including methods for analyzing the microstructure of sounds and the melodic contour of syntagmas. The present study aims to explore the acoustic correlates of perceptual and auditory features of spontaneous and prepared speech at segmental and suprasegmental levels using the authentic phonograms submitted for forensic phonoscopic and psychological-and-linguistic examinations. Expert analysis, carried out in conformity with traditional approaches to distinguishing the linguistic characteristics of oral speech, has enabled the authors to identify some significant informative parameters, which objectify interpretation of the oral speech spontaneity and degree of its preparation, taking into account the emotional state of the speaker.

Key words: linguistic parameters of oral speech interpretation, speech portraiture, emotional state diagnostics, prepared speech, spontaneous speech, acoustic characteristics of the sounding oral speech, prosody.

Citation. Potapova R.K., Potapov V.V., Kuryanova I.V. Non-Verbal Information Interpretation in Speech Portraiture (Exemplified by Oral Speech). Vestnik Volgogradskogo gosudarstvennogo universiteta. Seriya 2. Yazykoznanie [Science Journal of Volgograd State University. Linguistics], 2025, vol. 24, no. 5, pp. 151-161. (in Russian). DOI: https://doi.org/10.15688/jvolsu2.2025.5.11

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