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At 08:37 AM 8/26/2001, Tom Ritchford wrote: >what I'd really love is a feedback parameter that goes a >little OVER 100%. the reason for this is to "bring loops >back from the dead," so to speak. I often find that loops >get very cool artefacts when I let them fade out and I'd >love to bring those artefacts to the fore... On the EDP you can accomplish something like that using the multiple Undo feature. You can undo feedback passes, bringing back something that has faded away. This isn't quite what you are looking for, because of course it also undoes any artefacts that have developed. It is a great feature for evolving and redirecting loops though. You can reduce the feedback level and be adding new bits to the loop as the old bits fade away, so your loop is evolving in a particular direction. Then use Undo multiple times to go back in time as many layers as you want, so the old parts that had faded gradually come back again and the new things you had added disappear. Since the feedback change has been applied to each layer, Undoing it takes that pass of feedback away! Then do the process over again, taking the loop in a different direction. You can imagine it as dipping in and out of some new textures, or as a way to go on little excursions with your loop and then smoothly return to your original theme, and be able to do it over and over again, producing new variations and returning to your basic theme. The echoplex does it's feedback digitally anyway, so there are a lot less artefacts developed as the loop fades away than in older delays. (I guess that is what you are referring to.) In the older delays the feedback path would be done in analog, even when the delay line was digital. Every pass went through the AD/DA convertors, and through some analog gain circuits for the feedback. So you would pick up a lot of noise and junk with each successive pass. That's probably interesting if sound textures are what you do, but really annoying if rely on loops to be a more perfect recreation of what you put into them. The >100% feedback is an interesting idea. the practical problem with that in a looper is that you frequently want to set your loop to exactly 100% feedback, and quickly slide in and out of that point. That is a bit different from how people usually work with delays, where most of the time feedback is reduced and you hardly ever set it to 100%. So in a looping context, knowing exactly which point of the control equals 100% is critical. It is very handy to know you can just spin the knob all the way clockwise without even looking at it, and you are there. If you could only get 100% by going almost but not quite all the way clockwise, or you had to line up with some mark on the front panel, or land correctly in a detent, you would miss it frequently when you are trying to work fast. A lot of people would get frustrated with that! On the echoplex we even designed it so that 0% and 100% occupied a greater portion of the range, so even if you slightly missed with the knob you could still get what you want. (this also compensates for tolerances in the hardware, another major problem if the user has to line the knob up to a certain point....) kim ______________________________________________________________________ Kim Flint | Looper's Delight kflint@loopers-delight.com | http://www.loopers-delight.com