< Back to IRCAM Forum

OMTristan and SPEAR

OpenMusic
#1

Hello fellow travelers,

I am hoping to get some help here. I am an OM newb. I do know Pd but am stuck with trying to create a patch on OM that will read an analysis file exported from SPEAR. Basically I am attempting to do what Michael Klingbeil outlined in his dissertation: “OM patch that reads SPEAR data, transforms the data, displays the transformed data in common practice notation, and writes out the transformed data to a new text file.”

I am attaching a PDF of the excerpt from his dissertation which also includes a picture of the patch. I just don’t know how to make it work or create it.
I have OM 6.5.1 and OMTristan 3.0 loaded onto Windows PC. Everything works I just can’t make this patch happen.

Any help will be VERY appreciated.
thanks!
Nick

Pages-from-Klingbeil_Dissertation_web.pdf (182 KB)

DIST-FRQ and VISU-CHSEQ in OMTristan
#2

Hello Nick

I would advice to export from Spear in SDIF format and use the inbuilt SDIF-import tools in OM.
Here are some info :
http://support.ircam.fr/docs/om/om6-manual/co/SDIF-Read.html#ogN18c

… and to use a newer version of OM (you can have both versions installed in the same computer)

Jean

#3

Thanks Jean! I’ll check it out.

And thank you for all your wonderful work with OM and your contributions computer-assisted composition. I am going to check out your books.
Would you happen to know anyone that teaches OM in Southern California?

Nick

#4

Hi Nick,

Another OM newbie here. I agree with Jean, you’d probably do better with the built-in SDIF tools, they’re quite powerful. Also, I notice that the Klingbeil patch includes sub-patches (red patches), did you figure out how they’re made or were they described in the article too ?

You might want to consider the SuperVP and Pm2 libs.

I purchased both OM Composers books and the volume edited by Hirs & Gilmore. Those books aren’t tutorials but they are filled with valuable information about OM. Highly recommended to all students of OM.

Best,

dp

#5

Hello all,

Had time to tinker on OM today, the SDIF built-in features are indeed what I am looking for.
I was able to analyze a sound with SDIF->chord-seq and I get a huge black mess of notes on the score.
I tried offsetting it and zooming in but I still can’t see it very well.

Is there a function that arpeggiates the notes so I can see them one by one?

Thanks,
Nick

P.S. Does anyone know how to use OMTristan’s distortion tool? I would appreciate a patch example!

#6

Hi Nick,

Analysis files can provide a huge amount of data. You might want to apply a little reduction with SPEAR before exporting as SDIF. I use the Select Below Threshold and Select Below Duration functions, they can lighten the load considerably. You may also want to analyse your audio in shorter segments.

Take a look at the RepMus tutorial patch for partials tracking for another way to filter that mass of data. :slight_smile:

I haven’t looked at the distortion patch in OMTristan. Perhaps the Esquisse harm-dist is similar ?

Best,

dp