dueling axes: two-center bipolar version

I wrote some code in Processing so that I can participate in a future Dueling Axes event with BEAMS, an event in which audio performers generate visuals by using their two channels of input to independently control the x and y coordinate of a point, oscilloscope-like. I decided to try other coordinate systems. This video is my two-center bipolar proof-of-concept. Here, the audio channels are just a guitar and a slightly delayed version of it.

perlin noise video

I resisted learning about Perlin noise...until yesterday. Then I wrote some Perlin noise code in Processing (processing.org) and made this video with it. I can see why I resisted learning about it: it looks like stuff I've made using other techniques, so I don't know that I personally need this method for anything. But now I have it in my brain, and that is cool.