Hi! Here’s a more math problem than strictly oF one but dunno where to ask!
I’m working on a rPi project with oF which works with eurorack modular synthesisers.
How eurorack synths works is that oscillators have a 1v/octave response, i.e., when double the voltage is fed in the input, the frequency doubles. This works in a exponential scaling fashion.
Now, the range of bipolar control voltages in such a system is usually -5V to 5V. On my raspberry pi circuit, I’m scaling such voltages through an op amp into 0-3.3V to keep the Pi happy. All this works.
Now, I’d like to get an exponential response from this scaled 0-3.3V signal (that I’m getting as a float, between 0-1) that is in scale with the standard exponential response seen in the modular. Any ideas what kind of mapping/scaling I should be doing? I’m not doing audio, only video, so it doesn’t need to be perfectly precise, so a bit of ballpark would also be fine.