Very cool! Much better than the sound to light boxes, with pyramid glass, that were sold at swap meets during the 1970's. Concentric circles are mesmerizing and hypnotic Then, I found myself looking into a gun barrel. lol
Couldn't figure out everything that's going on, apart from the obvious audio to light triggering.
Don't know if you've discovered it yet, but the Teensy audio shield has line inputs, as well as line outputs.The Teensy audio library has lots of Digital Sound Processing modules, like hi/lo pass filtering. IOW, you could isolate and separate the desired audio bands, then feed those signals into ADSR envelopes for the desired response... all achieved in software.
Simply pick and choose your desired DSP modules, from the left pane, in the PJRC online
Audio Design Tool and follow the coding instructions on the right pane.
BTW, Reaper also has filtering and envelopes. The soundtrack can be dragged onto the timeline and the Teensy controlled via usbMIDI.
Fun toys. Thanks for sharing.
