[sdiy] MIDI, note off or note on with zero velocity?

[rburnett at richieburnett.co.uk]

Andrew Simper wrote:

> In addition if there are currently no notes down for some time
> (eg 5 seconds) you can always send a safety "all notes off"
> message, which will make no audible difference since all notes
> are already off, and it will catch any stuck notes.

My old JX-3P sends an "all notes off" message when the last note of a 
chord is released.  I don't know if that is behaviour common to Rolands 
of that era?

It is presumably a "safety net" to prevent stuck notes, but it caused 
me a lot of head scratching the first time I tried to merge its data 
with another synth.
I also remember that one module I had, actually cut off the release 
phase of dying notes when the last JX-3P key was lifted and it received 
the "all notes off" message!

-Richie,