Cents/Hz confusion/conversions

David Porritt dporritt@sun.cis.smu.edu
Mon, 12 Dec 1994 16:56:53 -0600 (CST)


On Mon, 12 Dec 1994, Michael Wathen 556-9565 wrote:

> Simply put:
>
>     cents =  ln(R)/ln(2) x 1200
>
>     where R is the ratio of the frequency in question over
>     the frequency of equal temperament  AND  ln is the
>     natural log function (ln is a function button on most
>     calculators).
>
> To find the frequency from a cents value:
>
>     frequency = 440 x 2^(n/12) x 2^(cents/1200)
>
>     where n is the number of half steps the note is away from
>     440 ( n is negative if it is below 440 and positive
>     otherwise).
>
>      ^ means to the power of.
>
> Is no one interested in working here at CCM?

It's TOO COLD in Ohio!!!!!

Dave Porritt
SMU Dallas, TX






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