This is a technique I am planning on using in some of my patches and yet I haven't seen anyone mention it so hopefully it will be something new and useful to some of you. Normally Usine's polyphony is used to replicate your subpatch in a parallel manner but you can also connect the voices in your polyphonic subpatch up to be serial. Using some basic logic you can then decide at which point to exit the feedback loop.
The example I have uploaded puts a filter in a subpatch. The input goes into voice one and gets filtered as normal. The output of voice one then feeds into voice two and goes through the filter again, this then feeds into voice three etc etc etc. The order control determines which voice sends its output back to Usine so you can choose how many times your audio passes through the filter.
Simple yet very powerful
Download example recursion patch
