20 May
2004
20 May
'04
2:51 p.m.
-----Original Message-----
From: linux-audio-user-bounces(a)music.columbia.edu [mailto:linux-audio-
user-bounces(a)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.
m.
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20 May
20 May
3:59 p.m.
New subject: [linux-audio-user] midi filter to convert NRPN's to CC's
Matthew Allen wrote:
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
-----Original
Message-----
From: linux-audio-user-bounces(a)music.columbia.edu [mailto:linux-audio-
user-bounces(a)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. 
4:17 p.m.
New subject: [linux-audio-user] midi filter to convert NRPN's to CC's
On Thu, May 20, 2004 at 01:53:27PM -0400, Chris Pickett wrote:
Matthew Allen wrote:
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
You may find this helpful:
http://mentalfloss.ca/sintheta/html/downloads.html
The pd abstractions file contains "nrpnin" and "nrpnout" which should
do
the job you want.
James
-----Original Message-----
From: linux-audio-user-bounces(a)music.columbia.edu [mailto:linux-audio-
user-bounces(a)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. 
6:22 p.m.
New subject: [linux-audio-user] midi filter to convert NRPN's to CC's
Hallo,
Chris Pickett hat gesagt: // Chris Pickett wrote:
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 :)
Dave's [nrpnin] object connected to the [ctlout] pd internal object
should do the job. I don't know nor use nrpn myself, though.
You will also need to deal with virtual midi connections. Pd only
supports rawmidi devices, so if you want to do virtual routings you'll
need to configure a snd-virmidi card and use aconnect or qjackctl to
make connections.
Pd's midi device numbering is a bit strange. If you cannot configure
this with the "Media" menu dialog or if you want to use this right
away on startup, you should create a ~/.pdrc containing the command
line option "-mididev XX" where XX is one greater than the YY in the
/dev/midiYY you intend to use.
So, say you're virtual midi card has a rawmidi device at /dev/midi20.
Then you need to start pd like this:
$ pd -mididev 21
or have "-mididev 21" in ~/.pdrc
You might also be interested in the "-noaudio" option.
Some of this also is described in the MIDI-Howto.
Have fun,
--
Frank Barknecht _ ______footils.org__
7588
days inactive
7588
days old
linux-audio-user@lists.linuxaudio.org
3 comments
4 participants
participants (4)
-
Chris Pickett -
Frank Barknecht -
James Stone -
Matthew Allen