So, I have been exploring the single sample delay feedback loops in gen and loving the results, especially ramping the feedback past 100% and pitch shifting or processing the signal in the feedback loop and sending back into the device, allows for infinitely cascading effects and some very noisy self oscillating systems.
However, when I port onto the Dwarf after a while of the feedback building audio cuts out, and I mean EVERYTHING on the whole pedal board cuts out until I turn the feedback pedal off and audio starts again…
Is there some kind of fail safe built in that cuts out a pedal thats feeding back? If so can I turn that off?
Yes, there is some safety mechanism at work here.
I think we had something similar to this before. You could maybe try to add a limiter into the loop, that gets active shortly before the signal cuts out.
Yes, a limiter in the feedback loop will definitely keep things under control, however it also means the pedal will never tip over into crazy self oscillation. I am really interested in that point where it takes a life of its own, it just sounds so mental!
I put a hard limiter after the pedal to stop the outputs from overloading - sound engineers hate that!
Does it really stop the setup to go mental? As long as the loop gain is higher than 1 it should still get crazy. Isn’t the 9V battery of an analog pedal also acting like a hard limiter?
yes, that is how I have it atm, and it works really nicely… but the pedal board cuts out completely after a few beats on the Dwarf (it’s fine in Max)…
It’s like there is some kind of fail safe mechanism that kicks in when the pedal is being fed too hard, ie if the feedback loop is over 100%
What’s worse is I don’t know how to reset the pedal after this happens other than to turn it off, then delete the said pedal and replace it in the pedal board
Would love to figure this out because it sounds really great when the feedback goes crazy, then boom, no sound!
Just a wee update on this, I have had some amazing results using the fairfield circuitry hors d’ourve pedal with the mod, creates some fairly insane feedback loops while also adding some nice analog thickness
Hi Kevin
Have you tried to add a Limiter before the Mod-Gain?
Also @jon, It seems the feedback is done entirely inside the plugin itself, could it lead to problems if the output values of the gen~ patch are overflowing because of the limitless feedback?
I don’t know what your feedback loop looks like exactly. But I can imagine the feedback signal to grow bigger than the min/max possible floating point number. Try some method of clipping in the feedback loop.
Putting a dcblock in your feedback loop is also advisable. The low frequency build up can cause problems.
You can look that up. It’s a fairly big number. But if you have a feedback loop with no control whatsoever you can surely get overflows. I’m not sure if Max prevents this somehow. But maybe try and experiment with clipping in your feedback loop.
