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• W2912641852 abstract "One of the most important issues in several aspects of human-computer interaction is the understanding of the users' emotional state. In several applications such as monitoring of humans in assistive living environments, or assessing students' affective state during a course, it is imperative to use an unobtrusive method, so as to avoid discomforting or distracting the user. Thus, one should opt for approaches that use either visual or audio sensors which may observe users without any kind of direct contact. In this work, our goal is to recognize the emotional state of humans using only the non-linguistic aspect of speech information, i.e., the acoustic properties of speech. Therefore, we propose an emotion classification that is based on the bag-of-visual words model that has been previously applied in many computer vision tasks. A given audio segment is transformed to a spectrogram, i.e., a visual representation of its spectrum. From this representation we first extract SURF features and using a previously constructed visual vocabulary, we quantize them into a set of visual words. Then a histogram is constructed per image; These feature vectors are used to train SVM classifiers. Our approach is evaluated using a) 3 publicly available datasets that contain speech from different languages and b) a custom dataset that has been constructed during a real-life classroom experiments, involving middle-school students." @default.
• W2912641852 created "2019-02-21" @default.
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• W2912641852 date "2018-07-01" @default.
• W2912641852 modified "2023-10-03" @default.
• W2912641852 title "A Non-Linguistic Approach for Human Emotion Recognition from Speech" @default.
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• W2912641852 doi "https://doi.org/10.1109/iisa.2018.8633644" @default.
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