I've developed a user actor that outputs a logarithmic curve, similar to analog audio faders. The purpose was to logarithmically fade audio volume through Midi fader board (NanoKontrol) and/or Envelope actor. I attach the actor and a table, where I compare the output of the User actor (logCurvature.iua) with a logarithmic ALPS fader. The values differ a bit, but the fading sounds very smooth to me! This is an actor for audio freaks (among video experts!) like me...

gunther

logCurvature.iua

logCurvature.pdf