FFT on the digital stream...


I've been loving my teensy 4.1 and the audio adapter and the audio library and the FFT functionality... yesterday I found a post on another forum from 2018 where Paul described how to implement USB audio (isochronous streaming) on Teensy 3.x using usb_audio.cpp and I was curious to know if it was possible to use that with the audio library to do FFT on the digital audio stream or if we are limited to only doing it on the analog input from a "stereo out" line... can it really be as simple as using the audio designer to feed usb into the fft and then continuing on as normal?

This looks perfectly acceptable to me.