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DECtalk Tone Number Chart

Tone Number
Note on Standard Scale
Frequency in Hertz
1 C2 65
2 C# 69
3 D 73
4 D# 77
5 E 82
6 F 87
7 F# 92
8 G 98
9 G# 103
10 A 110
11 A# 116
12 B 123
13 C3 130
14 C# 138
15 D 146
16 D# 155
17 E 164
18 F 174
19 F# 185
20 G 196
21 G# 208
22 A 220
23 A# 233
24 B 247
25 C4 (Middle C)
261
26 C# 277
27 D 293
28 D# 311
29 E 329
30 F 348
31 F# 370
32 G 392
33 G# 415
34 A 440
35 A# 466
36 B 494
37 C5 523