On Sat, 27 Sep 2008 20:22:53 +0200 Crypto <crypto@xxxxxxxxx> wrote: > Nick, > > it is a Dr. Boehm CnT/L. These organs were sold as a kit until about 1982. > This one was made in 1978. > > I have stripped out all of the old analogue circuitry while keeping the > drawbars, push buttons and turning knobs, and using the circuit boards of a > MIDIbox64 project I built my own MIDI controller. > > The two manuals and pedal were already converted to digital via a genuine > Boehm MIDI controller, but the drawbars, pushbuttons etc. were not. > > I have finished the hardware part of the controller, now I am busy getting the > programming to work. > > There are several things that make the whole business rather complicated: > > I am planning to mimic the behaviour of the old single finger chord drum > accompaniment and recreate the rhythm section. And I want to switch between > GM compatible SF2 sounds and B4II organ. All of these have their own features > that have to be made to work with the drawbars and switches. And there is an > LED panel as well, that should display the function of the buttons and > drawbars when operated or give other useful hints. > > I have finished programming the MIDI box64 controller part although at the > moment it does not much apart from sending a SYSTEM EXCLUSIVE message when > pulling drawbars / pressing switches, and I want to use keykit for tracking > these messages and converting them into MIDI messages for the applications > that I use. I think that using an external "host" application for preparing > all of the MIDI stuff is easier to use because it offers more memory and is > quicker to program. There is more to come as soon as I have things working > together as expected (more "convenience functions"). > > I have used the SYS EX command now with an "arbitrary" ID that I hope no other > component (hardware, software) is recognizing apart from keykit - but only > because I will tell keykit to recognize it... > > It seems to me that NRP controller will produce too much overhead for simply > switching a sound on and off. I know that normally a PRESET CHANGE would do > that, but such a command cannot toggle sounds, like stops of a church organ, > but only switch between them. > > Regards, > Crypto. That's quite a challenge you've set yourself :o Please keep us informed on how you get on. -- Will J Godfrey http://www.musically.me.uk _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
