There are 12 seimtones in each octave, and fundamental frequencies are logarithmically spaced, so the each note fundamental frequency is 2(1/12) = 1.0595 times the previous frequency.
...
Fundamental frequencies of Notes in Western Music.
Note | Frequency (Hz) | Wavelength (cm) |
---|---|---|
D0 | 18.35 | 1879.69 |
D#0/Eb0 | 19.45 | 1770. |
E0 | 20.60 | 1670. |
F0 | 21.83 | 1580. |