| Title: | * * Computer Music, MIDI, and Related Topics * * |
| Notice: | Conference has been write-locked. Use new version. |
| Moderator: | DYPSS1::SCHAFER |
| Created: | Thu Feb 20 1986 |
| Last Modified: | Mon Aug 29 1994 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2852 |
| Total number of notes: | 33157 |
A problem some Casio owners may be able to clear up for me...
The EG on the DCO for a Casio CZ has levels from 0 to 99, where a level of
0 gives no pitch offset and a level of 66 gives a two-octave offset.
Armed with this, I guessed that 33 would be an octave and 99 three
octaves....but no, it appears to be logarithmic rather than linear.
A level of 99 is in dog-whistle territory.
Has anyone come across (or tabulated) a cross-reference of levels versus
pitch offset?
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1434.1 | That's the extent of my expertise | AKOV68::EATOND | No, no, no... 47!! | Tue Jun 07 1988 10:55 | 6 |
RE < Note 1434.0 by AQUA::ROST "Lizard King or Bozo Dionysius?" > If I remember correctly, one octave is somewhere around 66 or 63. Dan | |||||
| 1434.2 | "Dual Slope" Exponential | DRUMS::FEHSKENS | Wed Jun 08 1988 12:25 | 14 | |
One octave is at 66. Up to there, 1 step corresponds to 1/6 of
a semitone, i.e., 6 steps is a semitone. From 66 on up, the steps
are quite a bit larger, I think 6 steps to the *octave*. This gets
you another 5 and a bit octaves up to 99.
(I'm wondering why it's 66 (6*11) steps rather than 72 (6*12), but
it's Monday morning and my computational neurons are still asleep...)
I have the full mapping written down someplace, but if you were
familiar with my home "filing system" you'd give up right now on
me ever finding it in less than a month.
len.
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