I need to explore some area around music frequency analysis. A good example is the way Shazam / SoundHound app works (mapping frequency domain, comparing, creating some vector map, handling noises and errors).
I am looking for a while for a practical book or articles about this. By practical i mean with a simple language/code examples, etc.
No Sigmas, and integrals for infinity that takes you back to university.
It's really hard to find any music/audio analysis practical material.