refinements to JdL's adaptune algorithm

John,

I don't know if this helps any, but...

The old (but more functional) 1999-5-4 version of JustMusic
maps microtonal pitches to the computer keyboard and allows
the user to play it to produce MIDI-files as output.

With my very rudimentary knowledge of C++, I haven't been
able to figure out myself how Ken Fasano did this, but
others who do C++ should be able to without much problem.

REF: <http://www.ixpres.com/interval/monzo/justmusic/introtoJM.htm>

-monz

> From: John A. deLaubenfels <jdl@adaptune.com>
> To: <tuning@yahoogroups.com>
> Sent: Tuesday, July 17, 2001 9:41 AM
> Subject: [tuning] Re: Hey JdL
>
>
> (Bob, my reply to you is below...)
>
> [Herman Miller wrote:]
> >On Mon, 16 Jul 2001 10:44:47 -0600, "John A. deLaubenfels"
> ><jdl@a...> wrote:
>
> [JdL:]
> >>Funny you should mention that; the Monz and I have been exchanging
> >>speculations off-list about this exact thing! It would not be
> >>difficult for me to include recognition within the program of special
> >>sysex's (and/or meta-events in a .mid file) which instruct the
> >>program, on the fly, to behave in different ways. Other commands
> >>would release it to make decisions on its own, as it now does, again
> >>on the fly. In the short-term, existing sequencing programs could be
> >>used to apply these sysex's (and/or...); in the long term, a nicer
> >>integration with other programs would be a lot more fun to use.
>
> [Herman:]
> >Another thing that might be helpful would be to use the key signature
> >in the MIDI file to distinguish between sharps and flats. You could
> >also use some of the unused MIDI controllers to set options. Either of
> >these would be a lot easier than adding sysex messages.
>
> Funny, I'd almost forgotten that the midi file has a place where the key
> signature can be specified. Lessee, is that once at the beginning of
> the file, or any time via meta-events... [cue sound of books being
> opened]... AHA, it's a meta-event that can be inserted at any time! And
> for pieces with more than 12 pitch classes, changing the key signature
> could clue the program which enharmonic was wanted. Good idea!
>
> Unused controllers, huh... Are you referring to the RPN and NRPN guys,
> or to plain ol' Bx xx xx messages? Are holes in the latter guaranteed
> to remain throughout time, I wonder? Are they often overloaded by
> others?
>
> I don't use commercial sequencing programs, so it's good to know what's
> easy and what's not. Is it _quite_ hard to insert a sysex? Or
> meta-event?
>
>
> [Bob Valentine responded:]
>
> [JdL:]
> >>The thing I'm right on the verge of doing is allowing more than 12
> >>internal pitch classes (closely connected, of course, with recognition
> >>of enharmonic spellings). But I'd like to introduce a set of commands
> >>which composers could use to communicate to me: picking the tuning
> >>file (5-lim, 7-lim, 11-lim, ...) and the key on the fly is my first
> >>priority there. In fact, that could probably be moved ahead of the
> >>pitch class enhancement.
>
> >I think the thing to come up with is how you want to communicate. I
> >suggested a text file that could be synced internally with the midi
> >file. You just need a way of specifying the parameter and specifying
> >time. As has been pointed out, key signatures (to a certain extent)
> >are communicable through midi. You've suggested using sysex messages
> >which your code would snarf. The problem I see with that is a friendly
> >way to insert the sysex messages.
>
> Parallel text file - wow, my first reaction is that getting it in sync
> and keeping it that way might be difficult. But then again, sequencing
> programs work with measure counts, right? So maybe that'd work well.
>
> You both hint that it's hard to insert sysex's via a sequencing program.
> That's too bad; don't really understand why, unless it's rarely done by
> most sequencers.
>
> [JdL:]
> >>Before too long, I need to address the question of trying to attach to
> >>other programs. The Monz's own JustMusic, under development, is tops
> >>on my list, except that it's still in a highly unfinished state.
> >>Whether I'd have any leverage with, say, the Cakewalk people is an
> >>open question, but the request might best come from users of the
> >>program who would like to attach to my program.
>
> [Bob:]
> >Power Tracks Pro, a sequencer from the same people who do Band in a Box
> >is not only dirt cheap but it has the capability to pass its data
> >structures to external programs (either a dll or an exe). I did some
> >experiments with this a few years ago and it worked fine.
>
> Kyool!! Thanks for the tip! Might go check'm out. I actually really
> _need_ a real sequencing program; my tools are primitive in the extreme
> (you might call them assembly language sequencing).
>
> >>If you are interested in plugging in, then I'm interested in knowing
> >>what features are most important to you.
>
> >I'm really not sure. Maybe I'll have a better idea if I get some 12tet
> >retuned.
>
> Meaning some of your own works, I hope! Send anything across to me that
> you'd like to hear, to jdl"at"adaptune.com .
>
> Thanks, Herman and Bob, for all your suggestions!
>
> JdL

-monz
http://www.monz.org
"All roads lead to n^0"

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