Re: [Om-synth] midi control of effects

[Scott Davidson]

On Thu, 15 Jun 2006 16:50:08 -0600, "Jake Michaelson"
<address@hidden> said:
> 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.
> 
> FYI I'm running om 0.2.0 under Ubuntu Dapper.
> 
> Thanks in advance!
> 
> --Jake

I'm 100% for adding a toggle/bypass plugin for OM. In the meantime, I
can suggest JackRack as an alternative. I ran into this exact same issue
several months back, before I knew about OM. JackRack has a bypass
toggle button built into the UI, but there is no assignable MIDI control
for it in the stable release. I hacked in support for this and have been
using it live ever since. But I'd really like to see this in OM sometime
soon, since it is much more flexible and cleaner.

If you're interested in using this, you can apply this patch to the
latest cvs. 

http://sourceforge.net/mailarchive/forum.php?thread_id=10053648&forum_id=22980

It's not pretty, but it did the trick for what I needed (which was MIDI
PC input to bypass a plugin, and also save CPU cycles). 

-Scott






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