AMSTRAD CPC464 - Page 244

These
values
are all
calcula
ted
from
Interna
tional
A as
follows
:
FREQUENCY
=
440*(2^(OCTAVE+((N-10)/12)))
PERIOD
=
ROUND(125000/FREQUENCY)
where N is 1 for C, 2 for C#, 3 for D etc.
NOTE FREQUENCY PERIOD RELATIVE ERROR
C 32.703 119 -0.374%
C# 34.648 113 +0.229%
D 36.708 106 -0.390%
D# 38.891 100 -0.441%
E 41.203 95 +0.206%
F 43.654 89 -0.543% Octave 2
F# 46.249 84 -0.548%
G 48.999 80 +0.350%
G# 51.913 75 -0.328%
A 55.000 71 -0.032%
A# 58.270 67 -0.055%
B 61.735 63 -0.435%
NOTE FREQUENCY PERIOD RELATIVE ERROR
C 2093.004 60 +0.462%
C# 2217.461 56 -0.662%
D 2349.318 53 -0.390%
D# 2489.016 50 -0.441%
E 2637.021 47 -0.855%
F 2793.826 45 +0.574%
Octave 3
F# 2959.955 42 -0.548%
G 3135.963 40 +0.350%
G# 3322.438 38 +0.992%
A 3520.000 36 +1.357%
A# 3729.310 34 +1.417%
B 3951.066 32 +1.134%
NOTE FREQUENCY PERIOD RELATIVE ERROR
C 4186.009 30 +0.462%
C# 4434.922 28 -0.662%
D 4698.636 27 +1.469%
D# 4978.032 25 -0.441%
E 5274.041 24 +1.246%
F 5587.652 22 -1.685%
Octave 4
F# 5919.911 21 -0.548%
G 6271.927 20 +0.350%
G# 6644.875 19 +0.992%
A 7040.000 18 +1.357%
A# 7458.621 17 +1.417%
B 7902.133 16 +1.134%