These numbers are saying the focus will be poor?
"3mm Aperure
0.8m Radians Divergence"
Didn't really have a project in mind, just thinking out loud about possibilities at the moment.
We do have 4 cats, I'll have to keep that in mind.
Maybe one of those boxes you can wave your hand in to make different sounds to be pet safer. Left/right, up/down, in/out.
Not sure what the algorithm would be, maybe in/out would be volume, and the left/right could be notes low to high, with octaves rising as you move low to high. Finger could be one note, more fingers more notes, either in same octave, or across octaves.
So I guess 13 up/down, 7 left/right, and 7 in/out?