Yes, two key controls work in combination here: The minimum frequency and the start % of the curve,
Minor controls: order of the filter, Q?
Raise the controls until the noise stops with no input and then lower them just below that point until they are not 'touchy'.
Adjust the release time to be non-zero. The III is much worse here than the II, it has some crazy bounce at the end of the envelope... dunno why. If you watch it on the controller edit screen it seems that the follower value bounces all over the place right at the end of the decay...
Adjusting the release seems to keep it from overreacting to the 'bounce'. Never had to mess with this on the II.
Also, set tracking to 'Fast'.
Make sure the slope of the controller (mid control, scale) allows the filter to open the frequency up all the way and keep it mostly open at the top and mostly filtered at the bottom. Also, the Q and filter order come into play. If you are filtering signal substantially with it wide open you have a major problem with how you have it set. You are not going to get major coloration with it wide open and max set to 10KHz or greater.
Agreed... It would be cool if the Axe could just kind of look at the signal and adjust everything and it might have some tricks beyond just what the filter does... There are a lot of variables. I still need to try the gate block itself with side chai on input 1.