I have the latest Macbook Pro laptop (i.e. it's fast) and when I run the minim beat detect demo it is very very choppy and inaccurate (skipping beats, stuttering/pausing etc.).

I used this example but loaded my own mp3 file that has a very steady a stripped down drum beat (it is a minimal techno track)
(from this link: http://processing.org/learning/libraries/frequencyenergy.html)

Any tips to get this working better? Eventually I need this to work accurately off a line in/mic. Maybe there is another library to try?

hi there,

i did some beat detection for one my projects. here is a simplified version (mainly separated from my project and able to run as standalone).

-this is basically working as an adaptive multiband attack detector.
-you can select the range of frequency you want to focus on(but it works fine on the full range)
-it automatically adapts its threshold to the variability of the music. but you can influence how this threshold is computed by making it more or less sensitive.
-it's based on minim FFT and uses logarithmic bands (as these match more what our hear perceives)

the link : http://motscousus.com/stuff/2008-02_Processing.org_patterns/test_beat.pde

h