[sdiy] MIDI spec

[Seb Francis]

Ingo Debus wrote:

> 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.

In any case, a delay sounds like a good idea, especially if your sequencer merges the data with other MIDI data, and tries to send it out of a single output :)

Seb