Looks like the main code is just a single python script (https://github.com/mfkiwl/krakensdr_pr/blob/main/_signal_processing/krakenSDR_signal_processor.py https

Looks like the main code is just a single python script (https://github.com/mfkiwl/krakensdr_pr/blob/main/_signal_processing/krakenSDR_signal_processor.py https://github.com/mfkiwl/krakensdr_pr/blob/main/_signal_pro...), and it's not doing anything special in particular (simply a lot of FFTs).