SpiroMask: Measuring Lung Function Using Consumer-Grade Masks. - Rishiraj Adhikary; Dhruvi Lodhavia; Chris Francis; Rohit Patil; Tanmay Srivastava; Prerna Khanna; Nipun Batra 001; Joe Breda; Jacob Peplinski; Shwetak N. Patel (CoRR, 2022)