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MIDI Implementation
Appendices
■ Scale Tune Function
(Model ID : 42H (GS), address: 40 1x 40H)
Scale Tune is a function that makes fine adjustments to the pitch of each note C-B. Settings
are made for one octave, and applied to the notes of all octaves. By making Scale Tune
settings you can use tunings and temperaments other than the standard Equal
Temperament. Here we give three types of settings as examples.
* Scale tune messages for any parts are recognized in the patch mode.
❍Equal Temperament
This temperament divides the octave into 12 equal steps, and is the temperament most
frequently used today, especially in western music. Initially, the Scale Tune function of this
instrument is set to Equal Temperament.
❍Just Intonation (tonic of C)
The primary triads sound more beautiful in just intonation than in equal temperament.
However, this applies only in one key, and chords will be discordant if you play in a
different key. The settings here are for a tonic of C.
❍Arabian-type Scale
The Scale Tune function allow you to use various tunings of ethnic music. Here is one of the
Arabian scales.
Setting Examples
Note Equal Temp. Just (in C) Arabian-type Scale
C0 0 -6
C# 0 -8 +45
D 0 +4 -2
Eb 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
Bb 0 +14 -10
B 0 -12 -49
The values in the above table are in units of 1 cent. Convert these values to hexadecimal,
and transmit them as exclusive data. For example to set the Scale Tune of Part 1 to an
Arabian-type scale, transmit the following data.
F0 41 10 42 12 40 11 40 3A 6D 3E 34 0D 38 6B 3C 6F 40 36 0F 76 F7
■ ASCII Code Table
On the XP-30, the following ASCII code set is used for processing data such as the Patch
Name and the Performance Name.
+——————+——————+——————++——————+——————+——————++——————+——————+——————+
| D | H | Char || D | H | Char || D | H | Char |
+——————+——————+——————++——————+——————+——————++——————+——————+——————+
| 32 | 20H | SP || 64 | 40H | @ || 96 | 60H | ` |
| 33 | 21H | ! || 65 | 41H | A || 97 | 61H | a |
| 34 | 22H | " || 66 | 42H | B || 98 | 62H | b |
| 35 | 23H | # || 67 | 43H | C || 99 | 63H | c |
| 36 | 24H | $ || 68 | 44H | D || 100 | 64H | d |
| 37 | 25H | % || 69 | 45H | E || 101 | 65H | e |
| 38 | 26H | & || 70 | 46H | F || 102 | 66H | f |
| 39 | 27H | ` || 71 | 47H | G || 103 | 67H | g |
| 40 | 28H | ( || 72 | 48H | H || 104 | 68H | h |
| 41 | 29H | ) || 73 | 49H | I || 105 | 69H | i |
| 42 | 2AH | * || 74 | 4AH | J || 106 | 6AH | j |
| 43 | 2BH | + || 75 | 4BH | K || 107 | 6BH | k |
| 44 | 2CH | , || 76 | 4CH | L || 108 | 6CH | l |
| 45 | 2DH | - || 77 | 4DH | M || 109 | 6DH | m |
| 46 | 2EH | . || 78 | 4EH | N || 110 | 6EH | n |
| 47 | 2FH | / || 79 | 4FH | O || 111 | 6FH | o |
| 48 | 30H | 0 || 80 | 50H | P || 112 | 70H | p |
| 49 | 31H | 1 || 81 | 51H | Q || 113 | 71H | q |
| 50 | 32H | 2 || 82 | 52H | R || 114 | 72H | r |
| 51 | 33H | 3 || 83 | 53H | S || 115 | 73H | s |
| 52 | 34H | 4 || 84 | 54H | T || 116 | 74H | t |
| 53 | 35H | 5 || 85 | 55H | U || 117 | 75H | u |
| 54 | 36H | 6 || 86 | 56H | V || 118 | 76H | v |
| 55 | 37H | 7 || 87 | 57H | W || 119 | 77H | w |
| 56 | 38H | 8 || 88 | 58H | X || 120 | 78H | x |
| 57 | 39H | 9 || 89 | 59H | Y || 121 | 79H | y |
| 58 | 3AH | : || 90 | 5AH | Z || 122 | 7AH | z |
| 59 | 3BH | ; || 91 | 5BH | [ || 123 | 7BH | { |
| 60 | 3CH | < || 92 | 5CH | \ || 124 | 7CH | | |
| 61 | 3DH | = || 93 | 5DH | ] || 125 | 7DH | } |
| 62 | 3EH | > || 94 | 5EH | ^ |+——————+——————+——————+
| 63 | 3FH | ? || 95 | 5FH | _ |
+——————+——————+——————++——————+——————+——————+
D: decimal
H: hexadecimal
Note: SP indicates “space”.