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Measurement Techniques

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07.10.2021 | ACOUSTIC MEASUREMENTS

A Method of Real-Time Dynamic Measurement of a Speaker’s Emotional State from a Speech Waveform

verfasst von: L. V. Savchenko, A. V. Savchenko

Erschienen in: Measurement Techniques | Ausgabe 4/2021

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Abstract

The problems of implementing systems with a voice interface for remote service of the population are examined. The effectiveness of such systems can be enhanced by automatic analysis of the changes of the emotional state of the user during dialogue. In order to do real-time measurements of the index of the dynamics of the emotional state, it is proposed to use the effect of the sound (phonetic) variability of speech of the user at observation intervals that are of small duration (fractions of a minute). Based on an information-theoretic approach, a method was developed for acoustic measurements of the dynamics of the emotional state under conditions of small samples, using a scale-invariant measure of the variations of the speech waveform in the frequency domain. An example of the practical instantiation of this method in real-time conditions is examined. It is shown that in this case the delay in obtaining measurement results does not exceed 10–20 s. The results of experimental studies confirmed the rapid response of the proposed method and its sensitivity to modifications of the dynamics of the emotional state under the effect of external perturbations. The developed method can be used to introduce automated monitoring of the quality of voice samples of users of the unified biometric systems. Also, the method will be useful to enhance security by noncontact detection of potentially dangerous persons with short-term disturbance of the psychoemotional state.

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Titel: A Method of Real-Time Dynamic Measurement of a Speaker’s Emotional State from a Speech Waveform
verfasst von: L. V. Savchenko
A. V. Savchenko
Publikationsdatum: 07.10.2021
Verlag: Springer US
Erschienen in: Measurement Techniques / Ausgabe 4/2021
Print ISSN: 0543-1972
Elektronische ISSN: 1573-8906
DOI: https://doi.org/10.1007/s11018-021-01935-z

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