On Sun, Oct 19, 2008 at 08:31:36PM +0300, Arda Eden wrote:

> Thanks Fons,
> It's clear now.

It's a somewhat convolved way to write this.
A bit simpler would be

F = 440 * pow (2, (i - 57) / 12.0)

since note number 57 is the 440 Hz 'A'.

Ciao,

--
FA

Laboratorio di Acustica ed Elettroacustica
Parma, Italia

Lascia la spina, cogli la rosa.