String Tension Calculation

[Farrell]

> what do
> you mean by "non-stretched pitch in hertz". That one has me scratching my
head
> :)

The pitch that D5 on an organ would be tuned to in ET. Obviously, on any
piano, D5 will be slightly higher in pitch, or stretched, than the organ D5.

Terry Farrell


----- Original Message -----
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: <pianotech@ptg.org>
Sent: Sunday, January 13, 2002 11:12 AM
Subject: Re: String Tension Calculation


> Farrell wrote:
>
> > To those of us less mathematically challenged than I:
> >
> > I have the formula(s) (thanks Ron N.) for converting hertz to tension
(given
> > a specific string diameter, density (or whatever), and speaking length),
but
> > I need to convert pitch in units of notes and cents into hertz. For
example:
> > I measure a pitch on my Accutuner as being D5 plus 60 cents. I know that
I
> > can find a non-stretched pitch in hertz for D5 on a table somewhere (or
any
> > other note - I have this somewhere I think), but how do I add the 60
cents
> > to the D5 hertz value? Thanks to any of the professors out there.
> >
> > Terry Farrell
>
> I have a table of convesions on my website. You are free to copy it and
use it
> as you wish. I am not sure thats exactly what you are after tho. btw...
what do
> you mean by "non-stretched pitch in hertz". That one has me scratching my
head
> :)
>
>
> --
> Richard Brekne
> RPT, N.P.T.F.
> Bergen, Norway
> mailto:rbrekne@broadpark.no
>
>