[letier]

There was a nice article on the beatport tech blog. I didn't manage to find it when I searched yesterday. Basically what they suggested was applying a low pass filter to isolate the base drums, then count the most common intervals between peaks (basically some kind of transformation) and then reconstruct the BPM from there by applying a range from 80-160 or similar. Hope this gives you a rough idea.

I implemented and tested it and it worked quite well with electronic music.

[coroxout]

Thanks! Was it this one? http://web.archive.org/web/20160304012151/http://tech.beatpo...

(no longer on the beatport site; tech.beatport doesn't seem to exist any more and the current beatport blog starts at 2015)

[musicnrd]

Yeah that's the one, I was looking at this post that uses Spotify and echonest too https://jmperezperez.com/bpm-detection-javascript/

[letier]

Exactly, this one. :)

I wanted to try it with another transformation to see if it can achieve better results.