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• W3175554999 abstract "With the convergence and development of the Internet of things (IoT) and artificial intelligence, closed-circuit television, wearable devices, and artificial neural networks have been combined and applied to crime prevention and follow-up measures against crimes. However, these IoT devices have various limitations based on the physical environment and face the fundamental problem of privacy violations. In this study, voice data are collected and emotions are classified based on an acoustic sensor that is free of privacy violations and is not sensitive to changes in external environments, to overcome these limitations. For the classification of emotions in the voice, the data generated from an acoustic sensor are combined with the convolution neural network algorithm of an artificial neural network. Short-time Fourier transform and wavelet transform as frequency spectrum representation methods are used as preprocessing techniques for the analysis of a pattern of acoustic data. The preprocessed spectrum data are represented as a 2D image of the pattern of emotion felt through hearing, which is applied to the image classification learning model of an artificial neural network. The image classification learning model uses the ResNet. The artificial neural network internally uses various forms of gradient descent to compare the learning of each node and analyzes the pattern through a feature map. The classification model facilitates the classification of voice data into three emotion types: angry, fearful, and surprised. Thus, a system that can detect situations around sensors and predict danger can be established. Despite the different emotional intensities of the base data and sentence-based learning data, the established voice classification model demonstrated an accuracy of more than 77.2%. This model is applicable to various areas, including the prediction of crime situations and the management of work environments for emotional labor." @default.
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• W3175554999 date "2021-01-01" @default.
• W3175554999 modified "2023-09-27" @default.
• W3175554999 title "CNN-Based Voice Emotion Classification Model for Risk Detection" @default.
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• W3175554999 doi "https://doi.org/10.32604/iasc.2021.018115" @default.
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