[LAU] An atrocity committed with PD (MIDI Spec) + (XG)

[chris beagles]

On 9/1/07, thomas fisher <studio1 at commspeed.net> wrote:
>
> On Friday 31 August 2007 23:52:33 david wrote:
> > thomas fisher wrote:
> > > On Friday 31 August 2007 01:09:07 david wrote:
> > >> Steve McConville wrote:
> > >>>> I am curious - has there been any move to modernize the MIDI
> > >>>> connectivity standards to include USB or Ethernet?
> > >>>
> > >>> There has been - there is a midi over usb standard.
> > >>>
> > >>> Midi is a poor starting point for modernisation not just beacause of
> > >>> the pragmatic compromises mentioned above but also because it is
> > >>> wholly unlayered (the spec covers everything from the physical up to
> > >>> the presentational layer),
> > >>
> > >> That could be separated fairly easily, I'd think.
> > >>
> > >>> and has it's expansion room squeezed into
> > >>> the SysEx ghetto.
> > >>
> > >> That's a big problem.
> > >>
> > >>> Midi over ethernet would be even less pleasant, and
> > >>> less logical, than doing RS-232 over ethernet.
> > >>
> > >> Only reason I mentioned Ethernet is that there are analog musical
> > >> instruments around already that can transmit their audio via Ethernet
> > >> (instead of analog audio cables).
> > >>
> > >>> OSC has fixed these problems and should have been built into
> > >>> everything since the mid-90s but so many people have invested time
> in
> > >>> learning MIDI that they wouldn't countenance working with anything
> > >>> else. It looks like RESTful web services may eventually replace
> both,
> > >>> however.
> > >>
> > >> I suspect that MIDI won't be budged. It is a standard in the music
> > >> world, and I doubt that many musicians care about it's limitations.
> They
> > >> may not even be aware of them. MIDI certainly keeps time in a lot
> finer
> > >> increments than I'm able to play - that's why sequencer programs have
> > >> quantization functions!
> > >
> > > How does the " XG " extension play into this? How proprietary is it?
> >
> > I don't know - and each week I play a Yahama PSR-740 keyboard with
> > Yamaha's XG. I've recorded some MIDIs using it, and they open just fine
> > in Rosegarden and play in fluidsynth. Or maybe you're talking about
> > something else?
>
> I do not know either, and was asking in the context of the MIDI
> discussion. I
> have always assumed that XG was an extension to the standard MIDI
> specification. And again I always assumed that an interpretative function
> existed somewhere in software layers either within a driver or in a
> filter.
> As with your Yamaha PSR-740 XG are all functions / prsets & ?? interpreted
> by
> the Linux MIDI? I am only guessing how all of this works.
> Tom


You could have a look for yourself, the spec seems to  be freely  available:
http://www.yamaha.co.uk/xg/reading/pdf/xg_spec.pdf

Chris

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