Audio feature ranking for sound-based COVID-19 patient detection

04/14/2021 ∙ by Julia A. Meister, et al. ∙ 0

Audio classification using breath and cough samples has recently emerged as a low-cost, non-invasive, and accessible COVID-19 screening method. However, no application has been approved for official use at the time of writing due to the stringent reliability and accuracy requirements of the critical healthcare setting. To support the development of the Machine Learning classification models, we performed an extensive comparative investigation and ranking of 15 audio features, including less well-known ones. The results were verified on two independent COVID-19 sound datasets. By using the identified top-performing features, we have increased the COVID-19 classification accuracy by up to 17 on the Cambridge dataset, and up to 10 original baseline accuracy without our feature ranking.

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