I'm going to be playing and doing live processing in a large outdoor festival this summer, and there will be no sound check. (The Newport Folk Festival--hopefully Pete Seeger won't come out with an axe and whack my computer (actually, that's not really fair, because the legend is apparently false, and besides, it would actually be an honor to have Pete S. trash my computer).) I can't afford to take any chances on something happening such as happened to me the other day, where too-hot monitor levels + overall house level (which happened to not be the same as the sound check) caused significant feedback problems. I'm also going to be actively playing instruments, so I won't be able to diddle w. the computer if something starts going south (although I suppose I could control levels with a foot pedal). My question is this: given the above scenario, does anyone have suggestions about intelligent, automated feedback killing? (I've got ideas, but the proviso that they be intelligent is problematic.) Ideally the gain structure would be solid enough to prevent such problems before they occur, but I want to be prepared for unpredictable worst case scenarios. A fallback would be for me to use the aforementioned pedal to attenuate the gain on input signals, should I hear any problems. For any ideas which will help me do better than that, I will be eternally in your debt!
Also, and this is semi-related, I have dim memories of a kind of "I Am Sitting In A Room" patch tucked away in some folder of the distro (in days of yore), perhaps even w. some kind of feedback detection in place. Is this memory a byproduct of my copious crack intake at the time, or is it out there somewhere? Couldn't find it.