search BP binary key using AMBE+2 samples saved from air with DSD software (https://github.com/szechyjs/dsd/)
optionally decrypt input samples to output.amb, which can be converted to .wav with DSD too.
no garanty for succesful decryption, especially for big keys
for good statistics input more samples
using:
python dmrbp.py subdir [outputname]
subdir - name of subdirectory in working directory with .amb files collection
outputname - output .amb name, no name - no decryption