HAMR 2014 Proceedings

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.

**Better Beat Tracking**

The goal of this project was to improve an existing dynamic programming beat tracker to handle:

  * wider variations in tempo within a piece
  * discontinuities in tempo
  * multiple metrical levels (to avoid "phase offset" errors at lower tempos)
  * the full pattern of beats, not just "on the pulse" beats

I got as far as tracking the varying tempo by Viterbi path through a (low sampling rate) spectrogram of the original onset envelope.  I adapted the beat tracker to use local tempo constraints, but then I got very concerned about aligning the tempo changes correctly to the original audio.  This took me down a rabbit hole of exactly what we want the onset envelope at time T to correspond to ... which will probably end up with better beat tracking in the future.

Code may appear at
https://github.com/dpwe/rhythmtrack
.. just Matlab for now.

{{dyntempo.png}}

HAMR 2014 Proceedings

User Tools

Site Tools

Page Tools