Laser sound patterns from a balloon with a mirror on it

This idea is directly from a video by Steve Mould (below) who got the idea from Brian Mackenwells (@mackenwells). I love sound visualizations and this is a cool way to directly translate sound waves into geometry. My videos came out much less clean than Steve’s. In person (and in the dark) the patterns are very crisp and interesting and I was even able to duplicate some of his patterns by playing his YouTube audio through my Bluetooth speaker. Unfortunately they were hard to capture on camera so I plan to re-record most of these but I’m glad I was able to try it out without too much messing around. I also found a way to connect my keyboard to the Bluetooth speaker and am looking forward to playing around with that.

My version of the setup. Very crude (obviously).
Pattern my setup produced when using audio from Steve’s video (at about 6:45)
Comparing my patterns to Steve’s video
Song: “Pneuma” by Caterina Barbieri
Frequency sweep
Song: “When I Try, I’m Full (Buchla Music Easel – Live)” by Kaitlyn Aurelia Smith