[sdiy] MIDI spec

Ingo Debus debus at cityweb.de
Fri Dec 6 16:50:19 CET 2002


Seb Francis wrote:
 > Ingo Debus wrote:
 >>I found that I can swamp *any* MIDI receiving device when I program a
 >>simple CV to MIDI converter: just read the ADC and output the data as
 >>MIDI CC in an endless loop. It needs at least a few milliseconds delay
 >>in the loop to work properly.
 >>
 >>The receiving devices I tried include my Mac running Logic or
 >>SoundDiver, and my Roland S-760 in MIDI monitor mode.
 >>
 >
 >
 > This sounds strange .. consider a big SysEx dump - this can be a 
really long continuous stream of data

Hm, perhaps a long Sysex dump takes less processing power than many CC
messages? Still strange that SoundDiver's MIDI monitor screws up too.

 > Did you try sending them on a channel which is not mapped to any 
voice for example?

No. I should have done that.
I could also have watched the MIDI output on the scope. With repeating
three byte messages this seems possible. But since adding the delay
fixed the problem I didn't investigate any further.

Ingo





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