[linux-audio-dev] MIDI bank select MSB + LSB

[Christian Schoenebeck]

Hi everybody!

I wonder what's the common behavior for a synth/sampler regarding MIDI bank 
select messages. You might know that MIDI has splitted bank indeces into two 
values MSB (coarse) and LSB (fine) value. So the "optimal" behavior would be 
a device / sequencer to send a MSB and a LSB bank select message to change 
the current bank. But many older keyboards for example won't do that. I've 
heard most of them only send MSB bank selects, while few others send only LSB 
bank selects. Is that true?

If yes, how should you handle that on synth/sampler side? Because you know, 
using just MSB messages would only allow to switch between the following set 
of banks:

	{ 0, 128, 256, ... , 16256 }

while using just LSB messages would only allow to switch between the following 
set of banks:

	{ 0, 1, 2, ... , 127 }

So should a synth stick with that behavior or should it detect if a device 
either only sends MSB bank selects or only sends LSB bank selects and then 
actually remap MSB-only selects to a set of:

	{ 0, 1, 2, ... , 127 }

CU
Christian