Re: [LAD] successive note on midi events

On Mon, 2010-04-12 at 00:52 +0100, James Morris wrote:
> On Mon, April 12, 2010 00:38, James Morris wrote:
> > Hi,
> >
> > I'm pretty sure I've seen this dealt with on the list before, but can't
> > find it.
> >
> > With the program I'm fumbling around trying to create, it will be possible
> > for successive note on events for the same pitch to occur without note off
> > events intervening.
> >
> > Does the MIDI spec allow such things?
>
> Sorry to answer myself so soon...
>
> I guess it is allowed. The simplest case being a sequencer outputting to
> the same channel and port as a keyboard player. Nothing can prevent this -
> right?
>

The question is what happens at the other end when a note gets struck a
second time.

a) Nothing, the note is already on.
b) Re-trigger, the voice is reset and the note gets played from the top
c) Trigger, a new voice is assigned and will play simultaneously to
previous voices
 

> And there's no way in the world that missing note-offs could be added in,
> in a fashion guaranteed to cover all possible permutations of connections,
> or without delaying the note-on which implies a missing note-off.
>

An all-notes-off will take care of any missing note-offs

>
> James.
>
> > The bash-script prototype of the program did this, and, I believe, the
> > soft-synths used, acted appropriately - that is, re-triggered the notes.
> > So I guess the question is, does it make any difference if I add-in the
> > note-off events - which, thinking about it, is going to be tricky because,
> > basically, although the program is sequencing, it will be real time and is
> > not psychic!
> >
> >
> > Cheers,
> > James.
> >
> > _______________________________________________
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> > http://lists.linuxaudio.org/listinfo/linux-audio-dev
> >
>
>
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Received on Mon Apr 12 12:15:01 2010