[sdiy] Kurzweil keyboard help

[Chris Boucher]

10 decimal is pan, but the midi dump was in hex. Continous controller 0x10 
is General Purpose Slider 1, which presumably maps to the general purpose 
slider on Kurzweil.

See: http://improv.sapp.org/doc/class/MidiOutput/controllers/

Chris.

On Wed, 6 Jul 2005, Bob Weigel wrote:
> 10 is usually pan I see.  So...hmm.  You would think it would be implemented 
> such that it would give you a half way value like what 64 ie. 0x40...(hex 40 
> that is).to give center pan.  Zero would pan it all the way left you'd think. 
> I can play with my software mixer and generate cc signals with one of my 
> boards that might allow that to be assigned to a controller to find out.  The 
> others are easier to see what's going on.  The machine is presetting any 
> attached device that say was previously turned on and plugged into another 
> unit where you say had the mod wheel turned up when you unhooked it.  Then 
> the attached module will still for instance be playing with vibrato and 
> rather than making you scratch your head as to why, the mfg decided to send 
> out some bytes to reset these things to zero.
>   I do the same thing with my sequences.  It got annoying going back to an 
> earlier part of the song to do a take after stopping right in the middle of 
> sequenced pitch bend, mod wheel, or aftertouch data for instance.   So I 
> would drop the necessary controller reset to zero messages at the beginning 
> of the tracks.  Without taking time to delve heavily into what you are doing 
> there, I'd think it's got to be that kind of an idea. -Bob
>
> David Brown wrote:
>
>> I'm adding an 'after' processor to my Kurzweil keyboard project
>> http://modularsynthesis.com/kurzweil/kurzweil.htm
>> and need some MIDI insight.
>> 
>> Basically my keyboard is transposed 5 keys.  I've implemented a MIDI parser 
>> in an AVR microcontroller that will take the MIDI stream and transpose it 
>> so it is correct. I'll use some of the extra pins to invert the pedal 
>> inputs (normally open instead of normally closed) and add a midi channel 
>> select and LED indicator to the keyboard.
>> 
>> Here's where I'm stuck.  The keyboard outputs 4 midi strings on power up.
>> e0 40 00
>> b0 10 00
>> b0 01 00
>> b0 02 00
>> 
>> I don't understand the second string.  What is continuous controller #10?
>> 
>> These strings are always exactly the same on power up no matter where the 
>> mod wheel or pitch bend is.  Should I pass them or inhibit them?  What do 
>> midi instruments expect on power up?
>> 
>> And the last is the one I don't understand at all.  Continuous controller 
>> 01 and 02?  My mod wheel outputs b0 02 XX for the first half movement to 
>> the center position and then b0 01 XX for the second half.  The first half 
>> range is 52 to 0 and the second half range is 0 to 53.  Thus is implements 
>> a decreasing mod wheel for the first half and an increasing breath 
>> controller for the second half.  Now what I find interesting is it seems to 
>> work just fine on all my synths.
>> 
>> Can someone explain this to me?  Should I change it?  I can make this 
>> controller be anything in software.  I read somewhere about controller 02 
>> being a negative 01.
>> 
>> Thanks in advance. - Dave
>> 
>> 
>