This is wrong, or misleading at best. It's a known difficult open problem to create a good audio representation (feature vector). Good, in the case of LSH, wou

This is wrong, or misleading at best. It's a known difficult open problem to create a good audio representation (feature vector). Good, in the case of LSH, would be that representation distance correlates well with human perception. For something like Shazam, you want this representation to be invariant to minor transformations of the audio. That's the interesting problem.