http://coding-geek.com/how-shazam-works/

https://link.springer.com/article/10.1007/s11042-020-09912-4 https://github.com/swesterfeld/audiowmark https://github.com/ebu/awesome-broadcasting#network--storage-testing https://medium.com/intrasonics/a-fingerprint-for-audio-3b337551a671

https://github.com/kdave/audio-compare/blob/master/correlation.py