diegohn
Joined: Nov 06, 2014
Posts: 3
Location: Spain
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 Posted: Thu Nov 06, 2014 3:59 am Post subject:
Question about GuitarPro instruments in Chuck
Subject description: Can ChucK access midi instruments that are used in GuitarPro? |
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Hello all.
I am relatively new to ChucK, but since I'm also learning programming I find it very useful for composing music, and I'm glad I found this forum. (This is the result of a very basic program I did  https://www.youtube.com/watch?v=T-XUmrJJ7ck)
I know there are unit generators in ChucK. However, I also have a program called GuitarPro, which has a lot of pre-defined midi instruments (guitars, organs, brass, etc). My question is: is there a way to access those instruments in ChucK? |
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kingcrabmeat
Joined: Sep 04, 2014
Posts: 4
Location: US and A
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| Posted: Fri Nov 14, 2014 1:14 pm Post subject:
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It should be a simple matter of routing the MIDI output from ChucK to a virtual midi device in the system which is routed to the MIDI input of your virtual synth. Unfortunately, I can't provide more specific details.
It's probably safe to assume that a virtual MIDI device is not included by default in most operating systems, so you may have to resort to downloading and installing one from a third party. All that is left to do after that point should be a matter of learning how to access the virtual MIDI device from both software programs. |
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diegohn
Joined: Nov 06, 2014
Posts: 3
Location: Spain
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| Posted: Tue May 10, 2016 4:24 pm Post subject:
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I come back here after some time 
Turns out GuitarPro is using the general midi set (Microsoft GS Wavetable synth, as I use windows).
So Chuck's midiout functionality allows me access to this instruments... it's not very intuitive (I'm glad I found this help online: https://lists.cs.princeton.edu/pipermail/chuck-users/2007-January/001426.html), but I figured out how to make a simple program with three instruments (I copy the code in case it's useful for somebody).
I wrote me.exit() at the end because, when I execute the MiniAudicle for a second time, if I haven't removed the existing shred or cleared the virtual machine the application crashes.
| Code: |
MidiOut mout;
0 => int port;
if( !mout.open(port) )
{
<<< "Error: MIDI port did not open on port: ", port >>>;
me.exit();
}
MidiMsg msg;
//specifying instrument (99) to be played on channel 0 (192)
192 => msg.data1;
99 => msg.data2;
mout.send(msg);
//specifying instrument (0) to be played on channel 1 (193)
193 => msg.data1;
0 => msg.data2;
mout.send(msg);
//specifying instrument (0) to be played on channel 9 -percussion- (201)
201 => msg.data1;
0 => msg.data2;
mout.send(msg);
//function to play note
fun void MIDInote(int channel, int note, int velocity)
{
channel => msg.data1;
note => msg.data2;
velocity => msg.data3;
mout.send(msg);
}
[60,62,64,67,69] @=> int notes[];
repeat(50)
{
Math.random2(0,notes.cap()-1) => int z1;
Math.random2(30,127) => int velocity1;
//noteOn message to channel 0
MIDInote(144, notes[z1], velocity1);
Math.random2(0,notes.cap()-1) => int z2;
Math.random2(30,127) => int velocity2;
//noteOn message to channel 1
MIDInote(145, notes[z2], velocity2);
.2::second => now;
//noteOff message to channel 0
MIDInote(128,notes[z1] ,velocity1);
Math.random2(0,notes.cap()-1) => int z3;
Math.random2(30,127) => int velocity3;
MIDInote(144, notes[z3], velocity3);
//noteOn message to channel 9 (percussion) --here second arg is the instrument
MIDInote(153, 60, 90);
.05::second => now;
//noteOff message to channel 9 (percussion)
MIDInote(137, 60, 90);
Math.random2(1,3) => int z;
0 => int percInstr2;
if (z==1) 55 => percInstr2;
else 62 => percInstr2;
MIDInote(153,percInstr2,90);
.05::second => now;
MIDInote(137,percInstr2,90);
MIDInote(128,notes[z3] ,velocity3);
Math.random2(0,notes.cap()-1) => int z4;
Math.random2(30,127) => int velocity4;
MIDInote(144, notes[z4], velocity4);
.1::second => now;
MIDInote(128,notes[z4] ,velocity4);
//noteOff message to channel 1
MIDInote(129,notes[z2], velocity2);
}
2::second => now;
me.exit();
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----
In Windows, for other programs / software or more complex instrument sets it may be possible to use loopMIDI, a freeware application (http://www.tobias-erichsen.de/software/loopmidi.html). |
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