Hi Gerald,

I don't know the exact state of the art, but Nick Collins recently
used "Anssi Klapuri's great 2008 paper 'Multipitch analysis of
polyphonic music and speech signals using an auditory model'" to build
a polyphonic pitch tracker for SuperCollider.

Since Nicks' code is GPL, maybe you can even re-use it. See this
email: https://www.listarc.bham.ac.uk/lists/sc-users/msg10760.html

Dan


2012/1/23 Gerald Mwangi <gerald.mwangi@gmx.de>:
> Hi all,
> I'm developing a small app which uses aubio to extract the fundamental
> Frequency of a monophonic guitarsignal to drive a set of wavetable synths.
> It works quite well and I'll put up on the net when I have the time.
> But I would like to extract the fundamentals of a polyphonic signal. Does
> anyone know of a lib which does this in realtime? Or at least a state of the
> art paper I could implement?
> thanx,
> Gerald
>
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user@lists.linuxaudio.org
> http://lists.linuxaudio.org/listinfo/linux-audio-user
>