Midi Master Clock Modulating?

hyperstationjr · Posted: Thu Sep 21, 2006 4:52 pm Post subject: Midi Master Clock Modulating?

I'll say first I know NOTHING of MIDI clock master/slave type stuff, or rather, I've never got it to work properly... ever.

Basically, I'm wondering if I could use a MIDI module in the G2 to output MIDI clock. The scenario would be taking an LFO or Random Clock module and using that output as a Clock source for an external sequencer.

I do this all the time within the G2, but I'm now wondering if I could save infinite DSP by using an external sequencer, but modulating it in interesting ways.

My first victim will be a MPC2000xl. I know for sure I can "faux" restart it, but now I need to be able to modulate the clock... anyone with experience with this particular setup, or have an idea how that would work? Again, part of the problem is I don't know anything bout MIDI cock syncing/slaving, so if you could clue me in on that, I'd appreciate it...

now off to learn Max/MSP... Crying or Very sad

slave to this · Posted: Thu Sep 21, 2006 6:40 pm Post subject:

im not really sure if i understand the modulating portion of what you are talking about, but its really easy to send clock without a midi module if that would solve part of your problem just by opening up the editor and going into synth settings and check the "send clock" box. it syncs all my external gear just fine (with a little lag here and there).

perhaps you could explain what you mean by modulating the clock source a little more?

james

hyperstationjr · Posted: Thu Sep 21, 2006 8:22 pm Post subject:

Well see that's the thing, I understand I can just do that, but the thing I would like to do would be to have an actual modulatable clock.

An example would be a RandomClock module acting as a clock for an external sequencer... and so in that case, I'd have to use some sort of MIDI module, so that's why I'm wondering if it's possible.

slave to this · Posted: Thu Sep 21, 2006 9:06 pm Post subject:

hmmm...maybe something like this is what you are looking for?

james

play with the mod wheel

random_clock_variating.pch2

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random_clock_variating.pch2

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slave to this · Posted: Thu Sep 21, 2006 11:24 pm Post subject:

i think i understand what you want more now that i thought about it...sounds like you are better off trying this in max because i am sure the master clock speed is some sysex message which you could decipher and easily mangle in that environment.

james

W.T. · Posted: Fri Sep 22, 2006 5:11 am Post subject: Re: Midi Master Clock Modulating?

hyperstationjr · Posted: Fri Sep 22, 2006 7:36 am Post subject:

I am still learning "Print" and "Bang"... so I think it will be a whil ebefore I start modulating MIDI clock and decyphering Sysexe messages... Any way to send Sysex messages through a Module? What about using an externa app (mac)? What if I routed something through Digital Performers "Control" interface and change MIDI information to Sysexe information? Would I be able to use a certain Sysexe "channel" that sends MIDI Clock(I don't know very much about it so I'm not sure how that would work..)?

slave to this · Posted: Fri Sep 22, 2006 11:23 am Post subject:

Eventhough they are elitist pricks sometimes, try the max/msp forum at cycling74.com
I'm sure somebody can push you in the right direction and help you out more than I can, (maybe you'll get lucky and someone will post a patch). If you have absolutely no idea about how midi works with CC's and status/data bytes you might want to brush up on that first. Otherwise, it will be really hard to decipher what is going on with a sysex messages. There are a few pdf toots on sysex in max that you could google and read up on as well.

As for the dp idea, I am not really familiar with sysex in there, but it seems a bit convoluted in that environment for what you want to do. If it has a midi monitor (like in logic) your first step might be to turn that on and start playing with the g2's master clock and see what types of messages it starts spitting out. Then try to figure out a way to manipulate them. Honestly though, I'd just have a crazy max/msp session, and try to do what you want in there. It seems like its your best option.

Hope that helps a bit more,

James

jamos · Posted: Fri Sep 22, 2006 11:31 am Post subject:

The G2 has no facilities for doing what you're asking. Clock messages are not sysex, they are MIDI realtime messages. The G2 allows external CC messages to control its tempo and clock start/stop, but I forget which ones. These must be sent from an external source, not from the G2 itself.

slave to this · Posted: Fri Sep 22, 2006 11:37 am Post subject:

hyperstationjr · Posted: Fri Sep 22, 2006 11:43 am Post subject:

Well, in DP, you can create knobs, sliders or grids. Essentially, it's like creating your own MIDI controler, but in software. The other thing is, you can route, and reroute MIDI, Systex, and even audio in some instances I think...

In effect, you could make Audio-to-MIDI converters, or MIDI to Sysexe converters.

In that way, if I could send MIDI Clock as a Sysexe message, then I could use the G2 to send MIDI CC data into DP, and have DP route that data to a sequencer as a MIDI Clock...

But if I can't use Sysexe data for MIDI Clock, then that's that...

If anyone has any information on that, I'd really appriciate it. Otherwise, I suppose I'll just have to work with Max for a while before I can do that... mmm.. Max/MSP + G2 + MPC...

Well anyways, thank's for all your help guys. Maybe I'll post some more patches in return...

slave to this · Posted: Fri Sep 22, 2006 11:56 am Post subject:

are they cc's 80 and 81?

blue hell · Posted: Sun Sep 24, 2006 4:58 pm Post subject:

Re MIDI CC#'s see http://www.clavia.se/G2/V1_40/G2Manual_V1_4.pdf page 143 and 144.

Some other info is at : http://electro-music.com/forum/topic-4029.html