termination and inharmonicity ?

[Richard Brekne]

Newton Hunt wrote:

> > Or how  does one change the inharmonicity of a bass string?
>
> Change the wrap is the only way.
>
>                 Newton

Ah come on now Newton... not really so... you can get into this buisness
of longitudinal modes.. and termination profiles DO have an effect.. and
the effect does not have to be soooo very large to make an impact.

There is a very intersting article published in the Journal of
Acoustical Society of America (Volume 10 number 3,, Jan 1939) by John
Coltman which demonstrates this quite nicely. The article is short and
sweet and the jist of it is easy enough to follow. His observations have
been confirmed several times since.

Put as shortly as possible... termination profiles can effect the
stiffness of the wire in vibration. And if stiffness is altered so is
inharmonicity.

--
Richard Brekne
Associate PTG, N.P.T.F.
Bergen, Norway