Appendix VII: Notes and
Tone Periods.
The table which follows gives the recommended Tone Period settings for notes in the usual even
tempered scale for the full eight octave range.
The frequency produced is not exactly the required frequency because the period setting has to
be an integer. The relative error is the ratio of the difference between the required and actual
frequencies and the required frequency, ie: (REQUIRED -ACTUAL)/REQUIRED).
NOTE FREQUENCY PERIOD RELATIVE ERROR
C 32.703 3822 -0.007%
C# 34.648 3608 +0.007%
D 36.708 3405 -0.007%
D# 38.891 3214 -0.004%
E 41.203 3034 +0.009%
F 43.654 2863 -0.016% Octave -3
F# 46.249 2703 +0.009%
G 48.999 2551 -0.002%
G# 51.913 2408 +0.005%
A 55.000 2273 +0.012%
A# 58.270 2145 -0.008%
B 61.735 2025 +0.011%
NOTE FREQUENCY PERIOD RELATIVE ERROR
C 65.406 1911 -0.007%
C# 69.296 1804 +0.007%
D 73.416 1703 +0.022%
D# 77.782 1607 -0.004%
E 82.407 1517 +0.009%
F 87.307 1432 +0.019%
Octave -2
F# 92.499 1351 -0.028%
G 97.999 1276 +0.037%
G# 103.826 1204 +0.005%
A 110.000 1136 -0.032%
A# 116.541 1073 +0.039%
B 123.471 1012 -0.038%
To Next Page
Loading...
