Re: [LAU] Audio to midi, finding notes from an mp3

From: Paul Brossier <piem@email-addr-hidden>
Date: Mon Oct 01 2007 - 13:37:07 EEST

Hi Sebastian and all,

On Fri, Sep 28, 2007 at 05:45:43PM +0200, Sebastian Gutsfeld wrote:
> Chris Cannam <cannam@email-addr-hidden-day-breakfast.com> writes:
> > On Monday 24 September 2007 00:43, david wrote:
> >> Not a single one produced anything usable! They were able to identify
> >> notes, and output them as MIDIs, but the output was pretty useless:
> >> every note of every instrument on the same staff.
> >
> > That's not a bad result for such a tough problem. Even monophonic note
> > tracking is tricky, depending a great deal on the instrument. Note tracking
> > in a dense polyphonic mixture is much harder (if it's possible at all).
>
> I've recently written a transcription system for polyphonic piano
> music. It's based on the system described in "A Discriminative Model for
> Polyphonic Piano Transcription" by Poliner and Ellis which uses support
> vector machines for each piano note trained on spectral data to predict
> sounding notes in small timeframes and hidden markov models to
> temporally constrain those classification results. The results are
> promising but not as good as I hoped (and sadly not as good as Poliner's
> and Ellis'). I have a few ideas to improve the system but as I'm
> currently searching for a job I have no time to implement those so I am
> thinking about making my software open source (ATM it's a Python library
> with command line tools).

Sounds great! I'd be happy to plug it into the python side of the aubio
library, and very interested to know more about your implementation.

Let me know, Paul

>
> If trained with other audio data than piano recordings it should also be
> possible to transcribe other instruments but the restriction to one
> instrument without slides, vibratos or anything like that remains.
>
> Sebastian
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user@email-addr-hidden
> http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
>
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
Received on Mon Oct 1 16:15:03 2007

This archive was generated by hypermail 2.1.8 : Mon Oct 01 2007 - 16:15:03 EEST