some links for beat extraction

http://www.fxpal.com/publications/FXPAL-PR-01-152.pdf
http://www.fxpal.com/publications/FXPAL-PR-01-022.pdf
http://www.csl.sony.fr/downloads/papers/2002/ZilsMusic.pdf automatic extraction of drum signals from polyphonic music signals

In a little chat with toon we talked about the problems so far with beat detection.
A possible part of the solution is to append weight factors to the frequency bands, so that the most important band has the biggest weight. The question is how to calculate these factors. The best idea is to let them be calculated automatically, by means of correlation values or something for every band.
Also we talked about bigger time windows, as in why don't we look for repeating riffs or measures. This might work better with more difficult pieces of music. This brought us to googling on "measure detection" and other stuff. But this is a TODO.

measure extraction music
This particular search term discovers loads of interesting websites. This is done in the post: Links, just links.

another idea:
why not use ICA but for audio then, to extract independent components like a drum line?