15
SYSTEM Parameters
SCALE TUNE for Patch Mode
Parameter
Value
Explanation
PATCH SCALE TUNE
The JUNO-Di allows you to play the keyboard using temperaments other than equal temperament. The pitch is specified in one-cent units relative to
the equal tempered pitch. One-cent is 1/100th of a semitone.
One set of Scale Tune settings can be created in Patch mode. In Performance mode, this can be set for each part of the performance (p. 63).
* The selected scale applies to MIDI messages received from an external MIDI device.
SCALE TUNE SWITCH
OFF, ON
Turn this on when you wish to use a tuning scale other than equal temperament.
C–B
-64–+63
Make scale tune settings for Patch mode.
Equal Temperament
This tuning divides the octave into 12 equal parts, and is the most
widely used method of temperament used in Western music. The
JUNO-Di employs equal temperament when the Scale Tune Switch
is set to “OFF.”
Just Intonation (Tonic of C)
Compared with equal temperament, the principle triads sound pure
in this tuning. However, this effect is achieved only in one key, and
the triads will become ambiguous if you transpose.
Arabian Scale
In this scale, E and B are a quarter note lower and C#, F# and G#
are a quarter-note higher compared to equal temperament. The
intervals between G and B, C and E, F and G#, Bb and C#, and Eb
and F# have a natural third-the interval between a major third and
a minor third. On the JUNO-Di, you can use Arabian temperament
in the three keys of G, C and F.
<Example>
Note name
Equal
temperament
Just
intonation
Arabian
scale
C
0
0
-6
C
0
-8
+45
D
0
+4
-2
E
0
+16
-12
E
0
-14
-51
F
0
-2
-8
F
0
-10
+43
G
0
+2
-4
G
0
+14
+47
A
0
-16
0
B
0
+14
-10
B
0
-12
-49
