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MIDI Implementation
Appendices
<Example3> Getting Temporary Performance data (RQ1)
cf.) This operation is the same as Data Transfer function in Utility mode with “PERFORM”
(Type parameter) and “TEMP: -PATCH” (Source parameter) options.
According to the “Parameter Address Map” (p. 162), the start address of Temporary
Performance is assigned as following:
10 00 00 00H Temporary Performance Common
:
10 00 20 00H Temporary Performance Part 1
:
10 00 2F 00H Temporary Performance Part 16
As the data size of Performance Controller is 00 00 00 31H, summation of the size and the
start address of Temporary Performance Part 16 will be;
10 00 2F 00H
+) 00 00 00 31H
10 00 2F 31H
And the size that have to be got should be;
10 00 2F 31H
-) 10 00 00 00H
00 00 2F 31H
Therefore the system exclusive message should be sent is;
F0 41 10 00 10 11 10 00 00 00 00 00 2F 31 ?? F7
(1) (2) (3) (4) (5) address data checksum (6)
(1) Exclusive Status (2) ID (Roland) (3) Device ID (17)
(4) Model ID (XV-5050) (5) Command ID (RQ1) (6) End of Exclusive
Calculating the checksum as shown in <Example 2>, we get a message of F0 41 10 6A 11 10
00 00 00 00 00 2F 31 10 F7 to be transmitted.
<Example4> Getting data (RQ1) at once;
Temporary Performance data,
Temporary Patch data of whole part in Performance mode,
Temporary Rhythm data of whole part in Performance mode.
cf.) This operation is the same as Data Transfer function in Utility mode with “PERFORM”
(Type parameter) and “TEMP: +PATCH” (Source parameter) options.
According to the “Parameter Address Map” (p. 162), the start address of the
above all parameters is assigned as following:
10 00 00 00H Temporary Performance
11 00 00 00H Temporary Patch (Performance Mode Part 1)
11 10 00 00H Temporary Rhythm (Performance Mode Part 1)
:
14 60 00 00H Temporary Patch (Performance Mode Part 16)
14 70 00 00H Temporary Rhythm (Performance Mode Part 16)
The offset address of Rhythm is also assigned as follows:
00 00 00H Rhythm Common
:
00 10 00H Rhythm Tone (Key # 21)
:
01 3E 00H Rhythm Tone (Key # 108)
As the data size of Rhythm Tone is 00 00 01 41H, summation of the size and the
start address of Temporary Rhythm Tone #108 in Performance mode will be;
14 70 00 00H
01 3E 00H
+) 00 00 01 41H
14 71 3F 41H
And the size that have to be got should be;
14 71 3F 41H
-) 10 00 00 00H
04 71 3F 41H
Therefore the system exclusive message should be sent is;
F0 41 10 00 10 11 10 00 00 00 04 71 3F 41 ?? F7
(1) (2) (3) (4) (5) address data checksum (6)
(1) Exclusive Status (2) ID (Roland) (3) Device ID (17)
(4) Model ID (XV-5050) (5) Command ID (RQ1) (6) End of Exclusive
Calculating the checksum as shown in <Example 2>, we get a message of F0 41 10 00 10 11
10 00 00 00 04 71 3F 41 7B F7 to be transmitted.
■
The Scale Tune Feature (address: 40 1x 40)
The scale Tune feature allows you to finely adjust the individual pitch of the notes from C
through B. Though the settings are made while working with one octave, the fine
adjustments will affect 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.
❍
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 the XV-5050, the default settings for
the Scale Tune feature produce equal temperament.
❍
Just Temperament (Tonic of C)
The principal triads resound much more beautifully than with equal temperament, but this
benefit 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.
❍
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 (Key-tone C) Arabian Scale
C0 0 -6
C# 0 -8 +45
D0 +4 -2
Eb 0 +16 -12
E0 -14 -51
F0 -2 -8
F# 0 -10 +43
G0 +2 -4
G# 0 +14 +47
A0 -16 0
Bb 0 +14 -10
B0 -12 -49
The values in the table are given in cents. Convert these values to hexadecimal, and transmit
them as Exclusive data.
For example, to set the tune (C-B) of the Part 1 Arabian Scale, send 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
Patch Name and Performance Name, etc., of MIDI data are described the ASCII code in the
table below.
+——————+——————+——————++——————+——————+——————++——————+——————+——————+
| 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
* “SP” is space.
XV-5050_e.book 175 ページ ２００３年６月２７日　金曜日　午後３時１４分
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