AMSTRAD cpc 6128 User Instruction page 337

NOTE FREQUENCY
PERIOD RELATIVE ERROR
C
523.251
119
-0.374%
C#
554.365
113
+0.229%
D
587.330
106
-0.390%
D#
622.254
100
-0.441%
E
659.255
95
+0.206%
F
698.457
89
-0.543%
Octave 1
F#
739.989 84
-0.548%
G
783.991 80
+0.350%
G#
830.609
75 -0.328%
A
880.000
71 -0.032%
A#
932.328
67 -0.055%
B
987.767
63
-0.435%
NOTE
FREQUENCY PERIOD
RELATIVE ERROR
C
1046.502
60
+0.462%
C#
1108.731
56 -0.662%
D
1174.659
53 -0.390%
D#
1244.508
50 -0.441%
E
1318.510
47 -0.855%
F
1396.913
45 +0.574%
Octave 2
F#
1479.978
42 -0.548%
G
1567.982
40 +0.350%
G#
1661.219
38 +0.992%
A
1760.000 36
+1.357%
A#
1864.655
34
+1.417%
B
1975.533 32 +1.134%
NOTE
FREQUENCY PERIOD RELATIVE ERROR
C
2093.004
30
+0.462%
C# 2217.461
28 -0.662%
D 2349.318
27 +1.469%
D# 2489.016
25 -0.441%
E
2637.021
24 +1.246%
F
2793.826
22 -1.685%
Octave 3
F# 2959.955
21 -0.548%
G 3135.963 20
+0.350%
G# 3322.438 19
+0.992%
A 3520.000
18
+1.357%
A# 3729.310 17
+1.417%
B
3951.066 16
+1.134%
The above values are all calculated from International A as follows:
FREQUENCY =440*(2t(OCTAVE+«N-10)/12)))
PERIOD =ROUND(62500/FREQUENCY)
.... where N is
1
for C, 2 for C
#,
3 for D, etc.
Chapter 7 Page 26 For your reference ....