This post will be quick and to the point. We’ll be using SoX to bring high frequency audio, commonly referred to as ultrasound, down to a range that can be heard. First thing I did to validate the process was generate an ultrasonic data file using Audacity. The problem with the standard 44.1k sampling rate is ultrasound frequencies will be dropped. I created my data files with a sampling rate of 192k. play “/home/local/Desktop/Ultrasound/Audacity192k_33khz.wav” Playing audio from this sample is … Continue reading Ultrasonic SoX