Computer Music (MUSC 216)
MIDI Note/Key Number Chart

There are TWO conventions for numbering keys (notes) in MIDI. The most common is the one below where MIDDLE C (note #60; $3C) is C3 (C in the 3rd octave). However, another convention was adopted by Yamaha Corp. for their synthesizer products which parallels the Octave Designation System used in Music Education formulated by the Acoustical Society of America. In that convention, Middle C is designated "C4". The "C3 Convention" is the most commonly used octave designation system on standard MIDI keyboards and this is the convention we will use for this class.

Octave
C
C#/Db
D
D#/Eb
E
F
F#/Gb
G
G#/Ab
A
A#/Bb
B
-1
0
1
2
3
4
5
6
7
8
9
10
11
-1
12
13
14
15
16
17
18
19
20
21
22
23
0
24
25
26
27
28
29
30
31
32
33
34
35
1
36
37
38
39
40
41
42
43
44
45
46
47
2
48
49
50
51
52
53
54
55
56
57
58
59
3
60
61
62
63
64
65
66
67
68
69
70
71
4
72
73
74
75
76
77
78
79
80
81
82
83
5
84
85
86
87
88
89
90
91
92
93
94
95
6
96
97
98
99
100
101
102
103
104
104
106
107
7
108
109
110
111
112
113
114
115
116
117
118
119
8
120
121
122
123
124
125
126
127
-
-
-
-

See MIDI Keyboard Notes

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