The Logic Off Topic list

Hello Hendrik!! Excuse me for quoting Keroac but "I dig you man!!" I feel
guilty for getting all of this information for free. You should write a
book. Although you might only sell one copy a year because aparently there
aren't many into this side of things. Todays post helped me out immensely!!
I got both SYSEX fader and SYSEX Mapper working.

> Chapter 3: 14 bit faders
>
> A more complicated situation: suppose your synth represents negative
> numbers the way I outlined in my previous post -- i.e. MSB/LSB =
> 7F/7F means -1, 7F/7E means -2, etc. (See previous post for details).
> You now want a fader with a range from -99 to +99, and connect a
> sysex mapper to that, in such a way that the proper data is sent to
> your synth.
> That means 1) your fader has to have a range that exceeds 128 values,
> and 2) you have to modify 2 bytes in the sysex message simultaneously.
> It will be clear that this is _much_ more involved than the previous
> situation in which a 'decent' 0-127 value range was used.  Describing
> how to do this efficiently would require another few pages.  I don't
> mind writing them, but not until I know that you have use for such
> information (after all, I _do_ have a life :-).

  I don't think this will be neccessary quite yet. But watch out!! I might
just take you up on your offer in some time:))
  The only question I have right now is how do I get the faders to affect
different midi channels? They seem to be universal. For example: I want to
set up a fader to change the Pri. Instrument for every midi channel. So say
I set up a SYSEX fader with messgae F0 18 08 00 03 17 00 04 00 F7. Then when
I close the fader and choose the channel in the parameters box (lets say
channel 2) I can tweak the Pri. Instrument on Cha. 2. But when I switch to
Cha. 1 it will also work on that channel with Cha. 2 selected in the
Parameters box. Why? It is possible to set up faders to tweak the pri. and
sec. instruments of every midi channel right? I couldn't get this to work
with the SYSEX fader or SYSEX mapper.
  I feel like I'm getting close. Basically what I'm trying to do is set up
an environment so that I can create different sounds with the presets that I
have on my keyboard for differnt songs.
            --Thanks
               Roger