[linux-audio-dev] Some help with my BPM algorithm?

[Steve Harris]

On Mon, Mar 22, 2004 at 07:49:49 -0800, Jay Dolan wrote:
> You are dead on with the downsampling issue.  With a
> downsampleFactor of 1 or 2 the program works great for
> me now - 50 was way too high.  I know jack sh!t about
> filtering..or PCM in general.  But the program, while
> slower, is now at least as accurate as my Numark
> CDN-88's Beatkeeper III.

You could use SRC to do the downsampling http://www.mega-nerd.com/SRC/

I think therers also a wavelets function that can do correlation of audio
more effeciently than a linear search, but I might have just dreampt it :)

- Steve