Yamaha MU80 User Manual download pdf (Page 54)

XGedit95 User Manual Page 54

16. Create Your Own System Exclusive Messages

There are times when you may want to enter just a single System Exclusive message into your midi file

(e.g. to change an effect mid way through the song). Where possible such activity should be avoided as it is

generally better to plan your midi file so that all setups are performed at the start of the song. However in

some cases it may be unavoidable.

To insert the required sysex message you may use XGedit in dual mode with record and attempt to

synchronise moving a control at just the right point during record/playback from your sequencer. However

this may prove difficult.

Hence a better alternative may be to utilise the features of your sequencer (particularly List Edit if available)

for inserting individual Sysex messages.

This section describes how to construct an XG sysex message and highlights some of the special cases

and problems you may encounter.

16.1 Hexadecimal Notation and MIDI

All midi messages are transmitted in hexadecimal notation (i.e. As single bytes encoded in base 16 format).

Your sequencer may or may not perform the conversion from normal decimal numbers for you. If it does

not, use the Windows calculator or the following table to look up the appropriate value:-

HDHDHDHDHDHD HD H

000 16 10 32 20 48 30 64 40 80 50 96 60 112 70

1 01 17 11 33 21 49 31 65 41 81 51 97 61 113 71

2 02 18 12 34 22 50 32 66 42 82 52 98 62 114 72

3 03 19 13 35 23 51 33 67 43 83 53 99 63 115 73

4 04 20 14 36 24 52 34 68 44 84 54 100 64 116 74

5 05 21 15 37 25 53 35 69 45 85 55 101 65 117 75

6 06 22 16 38 26 54 36 70 46 86 56 102 66 118 76

7 07 23 17 39 27 55 37 71 47 87 57 103 67 119 77

8 08 24 18 40 28 56 38 71 48 88 58 104 68 120 78

9 09 25 19 41 29 57 39 73 49 89 59 105 69 121 79

10 0A 26 1A 42 2A 58 3A 74 4A 90 5A 106 6A 122 7A

11 0B 27 1B 43 2B 59 3B 75 4B 91 5B 107 6B 123 7B

12 0C 28 1C 44 2C 60 3C 76 4C 92 5C 108 6C 124 7C

13 0D 29 1D 45 2D 61 3D 77 4D 93 5D 109 6D 125 7D

14 0E 30 1E 46 2E 62 3E 78 4E 94 5E 110 6E 126 7E

15 0F 31 1F 47 2F 63 3F 79 4F 95 5F 111 6F 127 7F

Figure 1 Decimal To Hexadecimal

Note that all data values within midi messages, must be less than 128 (decimal). Any bytes with values of

128 (decimal) or more are treated as Midi commands.

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Yamaha MU80 User Manual Page 54