[LAU] So what's the deal with controlling the aeolus organ stops via midi

Dominic Sacré dominic.sacre at gmx.de
Sun Oct 4 09:33:46 EDT 2009


On Friday 02 of October 2009 23:12:16 Andrew C wrote:
> Thanks a lot for your informative answer, but I'm still slightly
> confused. :(
>
> I've set my a button on my controller to midi CC 98 and then set it
> to toggle between a value of 00 and 2, so it should toggle the second
> stop of the manual on and off?
>
> I really feel I have missed something vitally important here.....
>
> The README says that the value used is a bit 6 set... Is it even
> possible to get standard hardware midi controllers to send that kind
> of info?

Unfortunately it's not that simple. Most hardware MIDI controllers will 
let you send continuous controller values or toggle between two values. 
But to control the stops in Aeolus you basically need to be able to 
manipulate individual bits of the controller values...

Some time ago I wrote a small script that might be just what you need. 
It uses mididings (http://das.nasophon.de/mididings/) to convert normal 
MIDI controllers (one CC for each stop) to Aeolus' CC 98. You'd just 
need to insert it between your MIDI controller and Aeolus.

The script is here:
http://das.nasophon.de/mididings/examples/aeolus.py


Dominic



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