Re: [Om-synth] midi control of effects

[Dave Robillard]

On Thu, 2006-06-15 at 16:50 -0600, Jake Michaelson wrote:
> Hi all,
> 
> First-time poster here.  I'm new to modular synths and MIDI in  
> general, but am pretty literate in the world of Linux, etc.  I just  
> bought a MIDI foot controller for my wife, hoping she could use it in  
> her live acts (she sings/plays guitar) to control a live looping  
> setup and also some guitar/vocal effects.  I already got the looping  
> taken care of with SooperLooper and the MIDI programming/learning  
> couldn't have been easier.  I've had a more difficult time finding a  
> good setup for controlling effects.  I need a JACK-compatible system  
> that can host LADSPA plugins as well as be controlled via MIDI.  Now  
> my ideas of MIDI control are much more simplistic than most  
> peoples'.  All the control I really need is to toggle between pass- 
> through and effect-on.  I don't need any control over parameters -  
> these will be pre-set.
> 
> I like om so far, but am unable to figure out how to accomplish this  
> simple effect on / effect off control via MIDI within OM. I can get  
> the PCM ins and outs connected with a LADSPA plug-in in between, but  
> I don't know how to incorporate MIDI switching/routing to turn the  
> patch on and off.
> 
> Can anyone give me some guidance on how to do this?
> 
> By the way, it seems that om can only read CC messages, it can't  
> distinguish my PC messages (most of my pedals are PC rather than  
> CC).  Is there any way to enable it to read ALL MIDI signals (PC, CC,  
> notes, etc.), rather than just CCs?  This would help me get more use  
> out of my pre-set pedals.

Thing is with PC messages is... what is Om supposed to do with them?

Basically everything in Om is done as a Node (eg plugin).  Advanced MIDI
functionality is limited right now because we don't have a plugin
specification with decent MIDI support.  Thankfully one is coming soon
(LV2). 

Sounds like what you need is a plugin with a MIDI input, and a control
input for a program number, which acts as a gate, enabling pass through
of audio if that program is active and cutting off the audio otherwise?
Would that do?  Could be done as a DSSI since there's no MIDI output
needed....

-DR-