R. SALAMON, R. KOWALIK, and I. POSTAWKA, “Detection and signal processing in the acoustic echolocation system for the blind”, Arch. Acoust., vol. 22, no. 3, pp. 277–296, Jan. 2014, Accessed: Apr. 29, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/955