Beat Finder Labeling Issue

I’ve run into a small snag with the Beat Finder.

  • Running on Windows 7 Pro 32-Bit, Intel i7-5820K @ 3.30 GHz
  • Audacity version 2.1.3

On a small scale it does exactly what I want, combined with the Export Labels option I get a text file with all the time offsets for each beat - great!

On a larger scale the labeling seems to corrupt?
I’m suspecting the plugin is generating more output than the environment in which it is running in has room to handle.

Referring to the attached image;

  • Top track is an hour long audio file - mono.
  • Middle (1st Label Track) is the result of running the Analyse, Beat Finder… against the entire file.
  • Bottom (2nd Label Track) is the result of running the Beat Finder against a small selection of the file.

I didn’t attach the audio since its an 80MB file but if you want it I can send you a dropbox link to retrieve it - just email me.

I’ve experimented with selecting larger and larger chunks of the file and eventually the labeling falls apart at any chuck over 30s in length.

I know this plug-in is rough but I’ve been looking to find a beat finder and this is the closest I’ve come - all the other tools want to determine the BPM which is much more complex - I just want the time offset of each beat.

Any help would be appreciate, thanks in advance.

The Beat Finder effect is a very simple algorithm, and not very accurate. I don’t think there is anything “wrong” with the effect - it is just not sophisticated enough to give reliable results.
Accurate beat detection is surprisingly difficult to achieve, which is why many of the better beat detection tools are quite complicated.