The Logic Off Topic list

At 02:02 04-09-00 +0200, you wrote:
>Thanks, but I have the charts as well. :-)
>Anyone who's got the _formula's_?

...the formula for converting a _relative_ frequency ratio to a number of
semitones:

r=2^(s/12), where r is the ratio and s is # of semis (positive=up,
negative=down)

...or if you want cents: r=2^(c/1200)

...to go the other way you have to get into logarithms and my maths is a
bit rusty at that point (Hendrik Jan Veenstra should be able to help on
that one!, being a maths teacher if I remember rightly!)

Hope this helps
Steve
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