MIDI Implementation
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7The Scale Tune Feature (Address: 40 1x 40)
The scale Tune feature allows you to nely adjust the individual pitch of the notes
from C through B. Though the settings are made while working with one octave,
the ne adjustments will aect all octaves. By making the appropriate Scale Tune
settings, you can obtain a complete variety of tuning methods other than equal
temperament. As examples, three possible types of scale setting are explained
below.
6 Equal Temperament
This method of tuning divides the octave into 12 equal parts. It is currently the most
widely used form of tuning, especially in occidental music. On this instrument, the
default settings for the Scale Tune feature produce equal temperament.
6 Just Temperament (Keytone C)
The three main chords resound much more beautifully than with equal
temperament, but this benet can only be obtained in one key. If transposed, the
chords tend to become ambiguous.
The example given involves settings for a key in which C is the keynote.
6 Arabian Scale
By altering the setting for Scale Tune, you can obtain a variety of other tunings
suited for ethnic music. For example, the settings introduced below will set the unit
to use the Arabian Scale.
Example Settings
Note name Equal Temperament Just Temperament Arabian Scale
(Keytone C)
C 0 0 -6
C# 0 -8 +45
D 0 +4 -2
D# 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
A# 0 +14 -10
B 0 -12 -49
The values in the table are given in cents. Refer to the explanation of Scale Tuning
to convert these values to hexadecimal, and transmit them as exclusive data.
For example, to set the tune (C–B) of the Part1 Arabian Scale, send the data as
follows:
F0 41 10 42 12 40 11 40 3A 6D 3E 34 0D 38 6B 3C 6F 40 36 0F 76 F7