Roland RS-5 - Changing to Pure Temperament or Arabic Scale (Scale Tune)

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Chapter 3. Mastering Use of the Performance Features
Changing to Pure Temperament
or an Arabic scale (Scale Tune)
What are Equal Temperament, Pure
Temperament, and Arabic scales?
Equal Temperament
This tuning divides the octave into 12 equal parts, and is the
most widely used method of temperament used in Western
music.
Pure Temperament
In comparison to Equal Temperament, Pure Temperament
allows the three principal chords to have a purer sound.
However, this effect is achieved only in one key, and the
triads will become ambiguous if you transpose.
Arabic Scale
In comparison to Equal Temperament, E and B are 1/2 a
semitone low, and C#, F# and G# are 1/2 a semitone high.
The intervals of G–B, C–E, F–G#, A#–C# and D#–F# are
neutral thirds (an interval midway between a major third
and a minor third).
Making Scale Tune settings
You can adjust the Scale Tune settings to make a variety of
scales. These settings allow you to make fine adjustments in 1
cent (1/100th of a semitone) to the pitch of each note C–B.
You can make separate Scale Tune settings for each
individual Part in a Performance.
1. Press [EDIT], getting the indicator to light.
2. Use VALUE [-]/[+] to select “Performance Part.”
3. Press [ENTER].
4. Press PART [ ]/[ ] to select the Part.
5. Press numeric key [4] several times to select “Scale Tune
C”– “Scale Tune B.”
fig.R03-07
* If you hold down [SHIFT] and press [4], you will return to the
previous item.
* You can press the key to directly select the name of the sound
whose pitch you want to change.
6. Press VALUE [-]/[+] to select the value (-64 to +63).
* If you wish to make settings for other Parts, repeat steps 5–6.
7. Press [EDIT].
The [EDIT] indicator goes out, and you are returned to
the previous screen.
Settings Example
* In this example, the Arabic Scale can be played in the three
keys of G, C, and F.
Note
name
Equal
Temperament
Just Temperament
(tonic C)
Arabian
Scale
C0 0 -6
C# 0 -8 +45
D0 +4 -2
D# 0 +16 -12
E0 -14 -51
F0 -2 -8
F# 0 -10 +43
G0 +2 -4
G# 0 +14 +47
A0 -16 0
A# 0 +14 -10
B0 -12 -49