TLDR: Each time step, another sierpinski triangle line is a) played on the speaker b) drawn to the screen with stepsize of 56. You can sense the motion, but not really see it, since it's 8192 "pixels wide" but one line of chars is just 80 bytes. One a much much much bigger screen, you could see the triangle. Or, if you dont "skip pixels" and draw it all at once, you would see it as well. In fact, i did a version at the very the same party that does that, but the specific sound gets lost on that one

https://www.pouet.net/prod.php?which=106206 https://www.youtube.com/watch?v=OVk-iP93ZEs