What are harmonics?
HarmonicsThinking about this I'm starting to wonder how one defines the beat. Some music has rhythms all over the place - what do you go for?
This is a difficult question...i think it depends on ur experience with the particular genre of music. From my incomplete knowledge of music theory, a beat is what the singers/instruments keep time to.
So u need to listen for a clear repetitive beat when the music is playing. It's not simple with the profusion of drum-machines used to synthesize modern music, but as u get used to a certain genre, you start to identify the beat from the accompanying rhythms.
It might be helpful to create a smartlist group with multiples of BPMs say (BPM < 50), 80, 100, 120, (BPM > 140) etc.
then take a random sampling for a few tracks in each BPM group (adjusting for similar genre) and see whether they sound similar in tempo, the ones that are too fast or too slow will need a BPM correction. This might seem like a lot of work, but once u clean up the incorrect BPMs, random play (with crossfade) on a certain range of BPMs will be better.