Subject: RE: [linux-audio-user] midi filter to convert NRPN's to CC's
From: Matthew Allen (matthew_AT_lith.com)
Date: Thu May 20 2004 - 21:24:49 EEST
The problem will actually be getting the NRPN's into PD. There
are built in pd objects for [ctlin] which gives you 3 outlets, one for
the Value, one for CC# and one for channel. There is a [midiin] object
that might give you raw Midi info that you can parse, but like I said in
my first email, I have never really used NRPN's so I don't know how you
would go about getting them into PD.
You could search the PD list archives here:
http://iem.at/mailinglists/pd-list/
Or just join the list its self. It is full of a bunch of very helpful
folks (many of whom are also here).
David Mccallum has done a couple of abstractions dealing with NRPN's
including it appears [nrpnin] and [nrpnout]. So this would be a good
place to start.
http://mentalfloss.ca/sintheta/html/downloads.html
m.
> -----Original Message-----
> From: linux-audio-user-bounces_AT_music.columbia.edu [mailto:linux-audio-
> user-bounces_AT_music.columbia.edu] On Behalf Of Chris Pickett
> Sent: Thursday, May 20, 2004 10:53 AM
> To: A list for linux audio users
> Subject: Re: [linux-audio-user] midi filter to convert NRPN's to CC's
>
> Matthew Allen wrote:
> >>-----Original Message-----
> >>From: linux-audio-user-bounces_AT_music.columbia.edu
[mailto:linux-audio-
> >>user-bounces_AT_music.columbia.edu] On Behalf Of James Stone
> >>Sent: Thursday, May 20, 2004 12:07 AM
> >>To: A list for linux audio users
> >>Subject: Re: [linux-audio-user] midi filter to convert NRPN's to
CC's
> >>
> >>I think you should be able to do it with pd fairly easily.. You can
> >>certainly perform mathematical functions on midi inputs. Using pd
> >
> > purely
> >
> >>as a midi router (and modifier) should not be a problem.
> >
> >
> > I was thinking about PD, but never having used NRPN's I don't
actually
> > know how you would get them into PD to do the tweaking. Once they
were
> > in there I could certainly set up an environment that scaled and
tweaked
> > ranges of numbers.
>
> NRPN's are encoded by 4 CC's, two for the parameter number and two for
> the data value, and they appear in four-byte chunks in the midi
stream.
> I'll take a look at PD, and post again if I get anywhere or get
stuck.
> Thanks for the suggestions ... three votes for PD in a row sounds
good
> to me :)
>
> Cheers,
> Chris
>
>
> _________________________________________________
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