There are alternatives, such as some of the work done by Masataka Goto in drum-free tempo/beat detection, see [1] for some literature. I haven't kept up with t

There are alternatives, such as some of the work done by Masataka Goto in drum-free tempo/beat detection, see [1] for some literature. I haven't kept up with the literature, but his work is quite old now, so I wouldn't be surprised if there were better approaches along similar lines. There's also Beatroot[2] which operates in a similar fashion to the OP described solution, but AIUI more flexible in looking for certain spectral flux signatures in various bands to determine beat onsets. I'm also intrigued by the cliffhanger in the original article posted here - wavelet or other approaches for accuracy/resilience, and so will be looking forward to when it's released. [1] https://staff.aist.go.jp/m.goto/PROJ/bts.html https://staff.aist.go.jp/m.goto/PROJ/bts.html [2] http://www.eecs.qmul.ac.uk/~simond/beatroot/ http://www.eecs.qmul.ac.uk/~simond/beatroot/