An employee Pete Lewis did an article for IEEE on a DIY ANC with some components links listed. I wanted to duplicate that for a bench test setup but wanted to get some additional details on how he put it together and maybe some customization to better suit the test I am trying to do.
This https://docs.sparkfun.com/SuperHeadphones/introduction/ has most of the pertinent info; this has more ideas https://docs.sparkfun.com/SuperHeadphones/whats_next/
You might be able to find Pete’s contact info online