Two 40 kHz ultrasound sensors are used as a rangefinder with a soundcard running at 192 kHz, and Matlab. The distance between the transducers controls the pitch of the note.
The video is based on a project done at the Group for Digital Signal Processing and Image Analysis, http://www.ifi.uio.no/research/groups/dsb/, Department of Informatics, University of Oslo in the course INF3460 - Project in acoustics and signal processing,
http://www.uio.no/studier/emner/matnat/ifi/INF3460/index-eng.xml
its only half an instrument without amplitude control
errrmarrs 2 years ago
Wow, that is really nice!
madamerotten 3 years ago