Correcting phase in feedback loops

#1

I was experimenting with feedback loops:

when increasing the amount of feedback some phasing starts to happen, and at high enough levels you'll hear the typical comb filter effect (beware to keep the master gain sufficiently low when trying this grin ), i'm aware that this is because of the 16 samples of delay between one loop and another.

Is there any way to correct the phase without programming new objects?

#2

frowning i put a reverb/fdn4 in there to see if i can delay the signal slightly.. now its talking to me.

#3

Wow! Cool stuff, where did you put it exactly in the chain?

#4

i put there instead of the dist/soft . It may have been somehow picking up usb noise.

#5

Okay, that's really haunting, i guess maybe it's because of data previously stored in sram that is picked up by the delay line (i can't see any other reasons, since a software circuit should not pick up any analog noise

#6

short answer: no.

a normal filter design usually introduces a delay and works by phase shifting. Or you'd need to create a zero-delay feedback filter to begin with. ( http://www.native-instruments.com/fileadmin/ni_media/downloads/pdf/KeepTopology.pdf )