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Emotion Recognition from Analysis of a Person’s Speech using Deep Learning
Galba, Šimon ; Kekely, Lukáš (oponent) ; Malik, Aamir Saeed (vedoucí práce)
This thesis deals with the analysis and implementation of a neural network for the purpose of recognizing emotions from human speech using deep learning. The thesis also focuses on tuning this network to achieve greater sensitivity to a specific emotion and explores the time and indirectly the financial requirements of this tuning. The inspiration for creating this work is the increasing integration of artificial intelligence in the fields of biology, healthcare, as well as psychology, and one of the goals is also to study the complexity of creating specific models of neural networks for purposes in these sciences, which should contribute to better accessibility of artificial intelligence models. The work is based on the implementation of the "AST: Audio Spectrogram Transformer" model, which is publicly available under the BSD 3-Clause License and utilizes methods that have been used so far for classification and recognition of images by converting an audio track into a spectrogram. The resulting values of weighted accuracy are as follows: 93.5% for the EMODB dataset, 92.8% for EMOVO, and 92.9% for the RAVDESS dataset.
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Stress recognition from speech signal
Staněk, Miroslav ; Přibil, Jiří (oponent) ; Tučková,, Jana (oponent) ; Sigmund, Milan (vedoucí práce)
Presented doctoral thesis is focused on development of algorithms for psychological stress detection in speech signal. The novelty of this thesis aims on two different analysis of the speech signal- the analysis of vowel polygons and the analysis of glottal pulses. By performed experiments, the doctoral thesis uncovers the possible usage of both fundamental analyses for psychological stress detection in speech. The analysis of glottal pulses in amplitude domain according to Top-To-Bottom criterion seems to be as the most effective with the combination of properly chosen classifier, which can be defined as language and phoneme independent way to stress recognition. All experiments were performed on developed Czech real stress database and some observations were also made on English database SUSAS. The variety of possibly effective ways of stress recognition in speech leads to approach very high recognition accuracy of their combination, or of their possible usage for detection of other speaker’s state, which has to be further tested and verified by appropriate databases.
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Stress recognition from speech signal
Staněk, Miroslav ; Přibil, Jiří (oponent) ; Tučková,, Jana (oponent) ; Sigmund, Milan (vedoucí práce)
Presented doctoral thesis is focused on development of algorithms for psychological stress detection in speech signal. The novelty of this thesis aims on two different analysis of the speech signal- the analysis of vowel polygons and the analysis of glottal pulses. By performed experiments, the doctoral thesis uncovers the possible usage of both fundamental analyses for psychological stress detection in speech. The analysis of glottal pulses in amplitude domain according to Top-To-Bottom criterion seems to be as the most effective with the combination of properly chosen classifier, which can be defined as language and phoneme independent way to stress recognition. All experiments were performed on developed Czech real stress database and some observations were also made on English database SUSAS. The variety of possibly effective ways of stress recognition in speech leads to approach very high recognition accuracy of their combination, or of their possible usage for detection of other speaker’s state, which has to be further tested and verified by appropriate databases.
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