[CAUT] Wire Stretch

[John Delacour]

At 12:32 pm +0100 29/4/07, RicB wrote:

>Hi JD
>
>Would you mind sharing how you calculated this ?

By Pythagoras' theorem the _maximum_ extension of the original length 
is calculated thus:

l_hyp = sqrt((l^2)+(h^2))

where l_hyp is the length of the hypotenuse of a triangle of base l 
and height h.

Having calculated the altered length you can use the formula here to 
calculate the frequencies for the two different lengths:
  <http://strings.pianomaker.co.uk/formulae.html>

The precise figure would depend on the original gradient of the 
speaking length and could vary between zero and the maximum I gave, 
but the quantity involved is so small as not to matter.

A little basic mathematics saves a lot of chatter.

JD