I have heard, though may be incorrectly, that this is an approximation
(much like using 3.141592653), and that the actual formulae used to
develop the scale are somewhat more complex.

-Adam

Jim Hartmann wrote:
>
> Adjacent notes on the chromatic scale are at a ratio of 2^1/12 (1.059463).
> Use A 440 (above middle C?) as your starting point.