3986.3137

[pbailey]

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Hi Jason,    Evidently none of your email servers will have anything to 
do with my server,
so I'll send this via pianotech.


3986.3137 is a conversion factor between the ratio of an interval and 
the cents width of
that interval.


log10(Hz of interest/Hz of reference) X 3986.3137= Width of interval in 
cents

also works when actual frequencies are reduced to ratios: ie; a just 
third is  (5/4)ratio.

  log10(5/4)X 3986.3137=386.32 cents , or 400 cents minus the 13.68 cents 
of the "ET"
third.....Is this helpful?

						Paul
On Tuesday, March 5, 2002, at 07:20 PM, Jason Kanter wrote:

Paul, studying your excel chart, what is this constant? 3986.3137? which 
you
use to calculate cents.

thx

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