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Detection of food intake events from throat microphone recordings using convolutional neural networks

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Food intake analysis is a crucial step to develop an automated dietary monitoring system. Processing of eating sounds deliver important cues for the food intake monitoring. Recent studies on detection of eating activity generally utilize multimodal data from multiple sensors with conventional feature engineering techniques. In this study, we target to develop a methodology for detection of ingestion sounds, namely swallowing and chewing, from the recorded food intake sounds during a meal. Our methodology relies on feature learning in the frequency domain using a convolutional neural network (CNN). Spectrograms extracted from the recorded food intake sounds through a laryngeal throat microphone are fed in to the CNN architecture. Experimental evaluations are performed on our in-house food intake dataset, which includes 8 subject, 10 different food types covering 276 minutes of recordings. The proposed system attains high detection rates of the swallow and chew events with high sensitivity and specificity, and delivers a potential for food intake monitoring under daily life conditions in future studies.

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Institute of Electrical and Electronics Engineers (IEEE)

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Computer science, Computer architecture, Information technology, Information science, Electrical electronics engineering

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2018 IEEE International Conference on Multimedia and Expo Workshops, ICMEW 2018

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10.1109/ICMEW.2018.8551492

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