RE: Let me into the mystical world of midi?

["Jeff Larson" <jeff.larson@sailpoint.com>]

[markfrancombe.com]
> I need to map some knobs on my M-Audio Ozone keyboard to the attack
> and decay parameters of my old GR30 guitar synth...  Now Im doing  
> this with no trouble with my other synths, basically because the  
> control change assignments are printed in an easy to understand way  
> in the manuals. However, the GR30 has a few pages of mystical and  
> miniscule faded text at the back of the book that looks like this
> 00 00 0A | 0E - 72 | attack
> this seems to be the relevant line.... 

It looks like you cannot control attack and decay with simple MIDI
Control Change messages.  What you are seeing in the chart is an
offset into a System Exclusive block and a range of values.  You would
need a controller capable of sending a SYSEX block formatted according
to the template at the bottom left of page 95, with the parameter
offset for attack substituted for the "Address" bytes and the desired
value in the "Data" bytes.  I'm not aware of any hardware controller
that allows you to format SYSEX messages like this in response to
turning a knob.

Of course Max could do it :-)

Jeff