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Quarter-tone midi

From: Heikki Johannes Junes
Subject: Quarter-tone midi
Date: Fri, 26 Dec 2003 12:35:22 +0200 (EET)
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In quarter tone music, one midi channel should split in two. The reason for that
is that in the current midi specification the whole channel becomes fine tuned.

There are at least two possible to implement this:

A) Restructuring the channel choosing mechanism:
   To check each channel beforehand whether they are 'no-split' or 'split in 
   Channels: 1 <2 3> 4 

B) "On Top" extra channel choosing mechanism:
   To creater an extra channel 'in need' which is attached to that channel
   Start   : 1 2 3 4
   In need : 1 <2-5> 3 4 <5-2>

As a result, that would allow, for example, chords which contain both quarter-
and half-tones, eg. <c fih>. Also, if one switches between quarter tone and half
tone notes (eg. c cih cis deh), some midi sequecers do not handle the switching
properly, but make the switch either too early or too late.

In an other context, there would also be need to place midi notes into separate
channales. Namely, some midi sequencers (e.g. in hand phones) are able to handle
only one-note-per-channel. Therefore, a mechanism that would optionally place
notes of a chord (eg. <c e g>) into separate channels is needed.

  Heikki Junes

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