This could be an option in one of the existing delays (Delay, Pulsar) or a new device. The idea would be to integrate an all-pass filter (like those used for building phasers) into the delay's feedback line. This would create an effect similar to a tape delay, in which the phase of the delays changes as well as the frequency. I got the idea from this text:
"Another use for all-pass filters is in the feedback path of echo delay lines. What the all-pass filter does is mimic the behaviour of the coils in the recording and playback heads of a tape echo device. In general these heads were not of the most expensive type and together with the capacitive coupling with the rest of the electronic circuitry the heads would act like all-pass filters. The effect is that when an echo repeats every repeat is slightly different which results in a much more natural timbral change in the decaying echoes as e.g. a straight digital delay that only uses a low-pass filter. So, when using an all-pass filter in the echo repeat feedback path of a digital delay it will sound more natural. It is a bit like the echoing in a room where the walls are not exactly at ninety degree angles or that has reflective surfaces on furniture that is irregularly placed in the echo room.
Original: https://rhordijk.home.xs4all.nl/G2Pages/Filters.htm#Filters_4645_999259
Comments (3)
fucking great idea! go listen the Strymon El Capistan, a (real) pedal made for guitar, synths, etc, with is the most loved tape echo simulation in the world
Yes, I know that kind of sound. It's extremely organic and very pleasant.
exactly, i think its the best sound of echo with the lofi echo (crunchy and with a higher tone), they should add them on this platform :p