Lese has released Recurse, a "Recursive Processor" available as a VST / AU audio plugin.
Here is what they are saying:
Recurse is for unique delays.
Without a better explanation; Recurse is a recursive processing audio plugin, where effects can be applied to incoming audio over and over again as time goes on.
At the heart of Recurse is a reorderable multi effect system, where two "Loop" effects determine at which point the incoming signal is sent into an internal delay buffer, and at which point the internal buffer is mixed back into the audio signal.
Recurse's effects include an EQ, a reverberator, and a multi-effect degradation system that can "Warp", "Dropout", and "Age" your sound.
Price: 45 USD at lese.io. The demo download is activated via use of a license key generated upon purchase.