Negative Inharmonicity

[Ted Simmons]

Hi Allan,
   Rick Baldassin has an article on negative inharmonicity on page 18 of
the Jan. 1991 Journal.

Ted Simmons, Merritt Island, FL

>Hi everybody,
>
>I ran into something interesting today and thought that I would throw it out
>to see where the discussion leads.  While tuning a Knabe console, I noticed
>that when then fourth patrial of F3 is tuned to F5 then F6 is compared you
>find that F6 if a couple of cents flat, ie. negative inharmonicity.  BTW, yes
>this is while taking the meaurements for an FAC tuning.  This note is on the
>treble bridge and has wound strings.  I remember this issue coming up a
>couple of years ago in the journal and perhaps one of you remember the
>reference and such.  Any good explanations out there for this kind of
>measurement?
>
>Thanks,
>
>Allan
>
>Allan L. Gilreath, RPT
>Gilreath Piano & Organ Co.
>Berry College
>Gilreath@aol.com