“…The subjects were required to eat in the usual meal environment and freely. They classified four eating activities: eating, swallowing, speaking, and other like noise [11,12] and five activities: eating, swallowing food, swallowing drink, speaking, and other like noise [9,17]. The F1 score for chewing, speaking, swallowing food, swallowing drink, and other sounds were respectively 96%, 94%, 81%, 76%, and 88%.…”