Subject: Re: [linux-audio-dev] Some help with my BPM algorithm?
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Tue Mar 23 2004 - 10:45:15 EET
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
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