DSP Robotics Support

Hello!

I am trying to make a delay effect with pitch shifting options, similar to the FM8 Psychedelay effect or Guitar Rig Psychedelay effect. These plugins pitch shift the signal up or down on each feedback through the loop, without attempting to preserve tempo. That is, if you run one of these effects on a drumloop and do a pitch up effect, the drumloop will speed up as it echos.

I've searched Google and the Flowstone forums very thoroughly for an existing module to do this. But every example I have found tries to stretch the signal to fit the same tempo. I believe the term for what I want to do is called pitch shifting by resampling, rather than by a phase vocoder or some other algorithm.

Can anyone point me in the right direction as to how to accomplish this? I would imagine an algorithm to do this would be simpler than one that attempts to stretch the signal to preserve time.

Any help is much appreciated!

Here is a basic schematic for a pitch delay. Poke inside and see if you can get some inspiration for what you are after. Play with the knobs, there are many combinations, most of them will be useless, but some might be interesting. The schematic is not optimized for CPU load - that's something for you to worry about later maybe.
Have fun!