I was playing around with hacking a mode on Eyesy and found that the etc.audio_in array is sampled in a way that syncs with note D4 + about 2.5 cents (or around 294 Hz). Not terribly useful, unless you like to use the Eyesy as a synth scope - showing the waveform you’re currently playing into it.
Here’s a short vid of playing a sine wave from the Hydrasynth through a custom mode visualising the array: https://youtu.be/nKFl-tLKbAU
Presumably this is just a function of syncing to Pal / NTSC; perhaps with Pal at 50Hz, if the audio buffer is sampled once per frame, you’d expect a sync at some multiple of 50? I haven’t look at the code - anyone got info on how the array is created?
Looking forward to getting into some 3D with the ofLua stuff…