Comparative Analysis of Audio Processing Techniques on Doppler Radar Signature of Human Walking Motion Using CNN Models. - Minh-Khue Ha; Thien-Luan Phan; Duc Hoang Ha Nguyen; Nguyen Hoang Quan; Ngoc-Quan Ha-Phan; Congo Tak-Shing Ching; Nguyen Van Hieu (Sensors, 2023)