Paul Coccoli wrote:
On Fri, Apr 8, 2011 at 7:46 AM, Dan Muresan <danmbox@xxxxxxxxx> wrote:
There are a few these days, but the only one I have ever used is
aubionotes, from the aubio package.
http://aubio.org/aubionotes.html
Thanks. I didn't know about aubio, though apparently it has been
around for ages.
Setting up aubionotes is very easy. Unfortunately, it doesn't work
quite well enough for me (pitch detection is error-prone). But it is
probably possible to fine-tune the detection parameters by going to
libaubio directly (aubionotes doesn't have too many options to tweak,
and the ones available aren't documented).
How did you use aubionotes? Any special tips?
As usual, I didn't do anything serious with it. I planned on writing
an that would quantize incoming midi notes to a specified key, but
never did. Though I imagine such a thing must exist (maybe the pd
suggestion would be a better choice).
What type of signal did you run to it? You could try a compressor in
front of it; I think that helped. I can't remember if filtering
helped. Maybe a bandpass tuned to your expected input, or a
combination of high- and lowpass?
While I wasn't trying to do this in real time, I tried a number of apps
that were supposed to be able translate audio to music notation. I
second the bandpass filter idea, or other filtering, to clean up the
frequency range before the pitch recognition phase. I don't know what
impact that might have on RT performance, though.
--
David
gnome@xxxxxxxxxxxxx
authenticity, honesty, community
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