The real answer to inharmonicity is...

Newton Hunt nhunt@jagat.com
Sun, 16 Aug 1998 16:24:44 -0400


Ron Nossaman wrote:

> At 10:58 AM 8/16/98 -0400, you wrote:
> >Keith wrote:
> >
> >"The wrapping tries to make the string believe it's longer than it really is."
> >
> >I think the wrap should give the string a maximum of flexability.
> >
> >        Newton
> >
>
> Yep. I can't say whether it should or not, but it does. Not long ago, trying
> to come up with a mechanical impedance formula for plain and wound strings,
> I did some beam deflection experiments on wound strings with and without the
> wrap to see how much stiffness the wrap added. The modulus of elasticity of
> the copper wrap turned out to be just a little over 0.003 that of the core
> wire by my count. That's why changing the wrap sizes has so little effect on
> inharmonicity (ends being left alone), when it has so much effect on
> tension. A change in core size will have far more effect on stiffness (and
> little on tension), and therefor more effect on inharmonicity.
>
>  Ron

And THAT is why we can improve bass string scales.
        Newton



This PTG archive page provided courtesy of Moy Piano Service, LLC