[gmpi] Re: Drilling down into MIDI->GMPI conversion

I've always been very uneasy about this, and I never knew how the
manufacturers ordered the note offs. I guess I thought it was just a
pushdown stack.

A composer could definitely have more voices playing in the middle of a note
than at the beginning or end, to produce a kind of very gradual swell. If
the voices also were arrayed from left to right in space, then the musical
meaning of the note offs could change quite a bit of the decay remained
centered, or if it swept from one side to the other...

----- Original Message ----- 
From: "Tom White" <twhite@xxxxxxxx>
To: <gmpi@xxxxxxxxxxxxx>
Sent: Wednesday, June 23, 2004 7:19 PM
Subject: [gmpi] Re: Drilling down into MIDI->GMPI conversion


> > Most of the hardware synths that I know certainly will
> > assign more than one voice if they get multiple notes ons with
> > the same note number on the same channel. Why is this useful?
>
> Yes, I know why it is useful...
>
> > Oh course this simply shows another limitation. If the
> > synth gets 3 middle C note ons on the same channel, when it
> > gets a note off the synth has to decide which voice to
> > terminate. It usually chooses the oldest matching voice, but
> > there is nothing in the MIDI protocol that tells it that the
> > oldest is the correct voice to drop.
>
> True, and yet...
>
> In the 14+ years I have spent running the MIDI Manufacturers
> Association, working with engineers at Roland, Yamaha, Kawai,
> Kurzweil (etc. etc. etc) I have never heard one of them say
> that was a limitation, never mind raise it as an objection
> to anything.
>
> I can't explain that other than to say it must not be such a
> big problem after all.. do you have another explanation?
>
> I'm not trying to assert that your assessment of these issues
> is wrong, just that it is not universal, and maybe not insync
> with the majority of the industry. When it comes to building
> consensus and support, that can be an important issue. I am
> hoping you might be able to see things differently if you are
> exposed to the viewpoint of others who are also successful in
> this business.
>
> - Tom White
>
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