Opening this issue to facilitate discussion. A Pytorch compatible wrapper around cusignal's polyphase resampler is here (WIP).

@awthomp Where is a good place to put the source? Currently putting it in branch 22.08 in a new sub-directory python/cusignal/pytorch but curious if a place already exists.

Also the backward method works (passes gradcheck, uses cusignal correlate) but is not optimized. It can be re-implemented most likely as another resample_poly call (since it upscales and convolves). That is on the to-do list.