Audibility of zipper noise would depend on the ramp length (shorter ramp would have bigger zip jumps) , but would also depend heavily on what is being done with the ramp.  Ramping the volume of a long bass tone would be much more audible than ramping the volume of a noisy wind sample.  <div><br></div><div>Matt, yep, should have been doing my processing with doubles too.  That&#39;s really made it better.  </div><div><br></div><div>For any purpose i will use, incrementing by double, and then setting the final tick to target value looks like it will be more than good enough.    </div><div><br></div><div>Actually, guess i&#39;ll probably just throw in a second performDSP method, without using the conditional to set that final tick.  For audio envelopes, i don&#39;t care too much if it only goes to 0.9993 instead of 1 </div><div><br></div><div><br></div>