True Feedback Looping in Patcher/FL Studio (for free)

[inlet-manifold]

I'm pretty new to using this forum, so forgive me for any inadequacies. I was suggested to make a post in this section of the forums.

So, I've been looking for a way to create custom feedback loops in FL Studio, preferably in Patcher even, but after looking through tons of discussion both here and on reddit, i've found nothing satisfying. Most answers revolved around using other plugin hosts like Mulab or VCV Rack, some of which have addtional costs and ofc you can't use the native FL plugins in them and you have to get used to a new environment, etc.

Well, I can proudly proclaim that I've finally found a satisfying solution! For free even! All you need is one to two free plugins. The important one here is called "ReaStream" (made by the Reaper guy) and additionally I'd suggest you also get Voxengo Sound Delay.

ReaStream let's you send Audio from anywhere to anywhere. It's basically Fruity Send but good. You can use in Patcher. You can use it in the Mixer. You can send audio from anywhere in the signal chain to anywhere else, doesn't matter if it's in the same mixer track or whatever. You just set one instance (the sender) to "Send audio, local Broadcast)" and the other instance to "Receive audio". Make sure that they both have the same name in the identifier and that they both enabled.

The second Plugin is optional. It let's you precisely delay the audio both by milliseconds and by samples. Depending on what kind of feedback loop you are building, this can be extremely helpful.

In the image I'll attach, you can see the most basic feedback loop made inside patcher. You can now literally plug anything you want to into this chain. You are no longer limited to just the basic filters, stereo effects and saturation that the typical delay plugin gives you. Of course you can also completely take out the Delay Plugin (Fruity Delay 3 in this example) and create some instantaneous loops, which will provide you with some absolutely nasty and filthy noise and glitch sound (this is the part where having control over the delayed samples comes into play).

In any case, whatever feedback loop you're making, always have a Limiter at the very end and don't be afraid to lower the ceiling way down, cause this stuff can get out of hand extremely quickly and be extremely loud even if it is limited at 0dB.

So yeah, that's it. I'm very happy about having found this solution. If anyone else had solved this previously, then I'm sorry for repeating all this information but i genuinely didn't find anything in my search.

[Eran Harel]

Looks great, good for you. What about latency?...

[JLAB]

Eran Harel wrote: ↑Sat Jun 07, 2025 8:55 am Loo...

[JLAB]

inlet-manifold wrote: ↑Fri Mar 14, 2025 7:26 pm...

[inlet-manifold]

Eran Harel wrote: ↑Sat Jun 07, 2025 8:55 am Wh...

[inlet-manifold]

BTW, for anyone still stumbling upon this post,...