Comment by rollcat

I've never used either Csound or Supercollider extensively (more of a PD guy), but having tried to write a simple oscillator in pure C, even that turns out to be non-trivial. The naive approach of sin(t * pi2 * freq) produces pops when varying the frequency - you need to keep track of current phase. And from there it begins, the further you dig the more things you find you thought were trivial. I wouldn't be surprised if this or that synthesizer got something wrong.