Cough Against Covid

We developed an AI-based cough sound analysis technology to help identify at-risk Covid patients before administering lab-based tests, even if they’re asymptomatic.

Our solution enables screening for Covid using only solicited cough sounds. The AI is trained on cough sound data collected from Covid-positive and negative patients at hospitals in Bihar, Odisha, Rajasthan and Maharashtra. The patient’s normal voice is also solicited as a reference. The audio inputs are converted to spectrograms and fed into a deep neural network that learns to predict Covid positive patients. The output prediction is optimized for recall so as to capture as many true Covid positive patients as possible, as is appropriate for a screening method. Interestingly, we find that the AI system is able to detect even asymptomatic Covid patients through their cough.