yes, no problem with "Midi Translator".
You need:
- Bome's Midi Translator Pro (MT)
http://www.bome.com/midi/translator/
- a virtual MIDI cable like Yoke
Then you can configure MT to sit in between keyboard and soft
synth (see MT manual). Now you can add a translator like this:
Code: Select all
INCOMING: MIDI pp qq rr
RULES:
if pp < 128 THEN exit rules, execute outgoing
if pp > 159 THEN exit rules, execute outgoing
ss = pp
ss = ss & 15
pp = pp & 240
if ss != 0 THEN exit rules, execute outgoing
ss = 0
if qq > 40 THEN ss = 1
if qq > 60 THEN ss = 2
if qq > 70 THEN ss = 3
if qq > 80 THEN ss = 4
pp = pp | ss
OUTGOING: MIDI pp qq rr
This will look quite cryptic to you, but it gives you maximum
flexibility:
- Whenever you press a key or turn a knob or similar, a MIDI
message is sent to your computer
- MIDI translator receives it in the INCOMING line. Most MIDI
messages are 3 bytes, and each byte is stored in the variables
pp, qq, and rr.
- in the rules, I first do a sanity check that if pp (the first
MIDI byte) is smaller than 128. If it is, then it's not a regular
MIDI message and we just pass it through by jumping to OUTGOING
directly.
- further, if the first byte is larger than 159 (0x9F) then this
MIDI message is not a NOTE message and again, we do not alter it
but "play" it directly.
- then we define variable ss to contain the channel (from 0..15,
rather than 1..16)
- if the channel of your incoming message is not 1 (i.e. test for
ss!=0 because ss starts channel count with 0), then again we just
pass it through and do not do any channel mapping.
- the following lines are the "gist": they set the new channel
for this message in ss. qq is the variable that contains the MIDI
message's note. If the note (in semitones) is larger than 40
(this is an arbitrary value, you can set the split note to any
other value), I remap the channel to 2 (need to set ss to 1,
because channel counting starts from 0 here). For fun, I've added
some more split notes to map to channels 3, 4, and 5. You can
remove those lines.
- at last, we set pp to the patched NOTE ON (or NOTE OFF) message
with, possibly, the different channel
- the OUTGOING message is the original MIDI message, but possibly
patched with the different channel.
