[sdiy] Midi problems

[Terje Trane]

Are there any real-life synths that use note-off velocity? And is it useful?
(Does anybody have examples?)

I'm planning to make a dual manual midi keyboard and are thinking of what I
want to put into it.

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Thomas Hudson
> Sent: Wednesday, April 03, 2002 10:47 PM
> To: Tim Ressel
> Cc: Synth-Diy
> Subject: Re: [sdiy] Midi problems
>
>
> On Wed, 2002-04-03 at 14:17, Tim Ressel wrote:
> > Hey all,
> >
> > After days of avoiding eye contact with the Midi2cv
> > project which has been consistantly kicking my butt,
> > I've dug back into it.
> >
> > Guess what? I took a look at the midi info from my
> > kbd, and I seem to be getting Note On ($9x) commands
> > for both key down and key up.
> >
> > Have I missed something here?
> >
> Most keyboards implement note off as a note on message with
> zero velocity. The reason being is that they can use running
> status. Running status allows one to not resend a status byte
> if the next message has the same status. So intead of a key
> down and up being:
>
> 0x90 0x64 0x64
> 0x80 0x64 0x0
>
> you'll have:
>
> 0x90 0x64 0x64
> 0x64 0x00        <= no need to resend 0x90
>
> A note on with velocity zero is equal to a note off.
>
> Tomy
>
>