[gst-devel] [gst-cvs] slomo gst-plugins-bad: gst-plugins-bad/ gst-plugins-bad/ext/soundtouch/

Paul Brossier piem at fluendo.com
Fri Feb 1 17:56:49 CET 2008

Hi all,

well, shameless and late plug here, but how about using aubio [0] for
beat detection? it should be fairly straightforward to extract beat
locations with it.

We talked already of doing a gst plugin for this, and I will as soon as
I find time. If anyone wants to have a look at it before then, i'd be
happy to give a hand (although i'm off for the week end from now).

cheers, Paul

[0] http://aubio.org

On Fri, 2008-02-01 at 17:43 +0100, Florent wrote:
> > Hi florent,
> Hi
> > the problem is that the algorithm used only gives you bpm estimates, it does not
> > tell you when the beat occured. Furthermore the plugins would need to know about
> > the latency to the sink then, or somehow marks the beats as payload on the
> > buffer it analyzed, so that the audiosink could send the message in sync with
> > the audio rendering. Not easy, but doable.
> Another option appears to me, please correct me if i'm wrong:
> extracting frequency information of the detected beats from the
> plugin, putting it into the audio pipeline as a fork (tee), applying a
> low pass filter based on the fore-cited frequency, and using then the
> level plugin (with a threshold) as beat signal...
> What do you guys think ?
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