these formulas work on the window's accessories calculator and in spread sheets. f*2^(cents/1200) gives freq resulting from cents. Example... 440*2(5/1200) = 441.273 1200*(log(F/f)/log(2)) gives cents. replace F/f 442/440 .... so.... 1200(log(442/440)/log(2)) Formulas from Niklas Eliasson Ric Opycat
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