Chaning Inharmonicity

Richard Brekne Richard.Brekne@grieg.uib.no
Tue, 30 Oct 2001 22:37:35 +0100



Newton Hunt wrote:

> Hi RIchard,
>
> The SAT measures the difference between, in cents, the 4th and 8th
> partial on F3, the 2nd and 4th partial on A4 and the 1st and 2nd
> partials of C6.
>
> An optimum set of values would be a straight line, like 8, 7 and 6 or
> 7,7,7 or some such.  I like to see a straight line but C6 no higher than
> 5 but that is rare.  Now one "D" I had was 7,6,5, real nice numbers but
> it rose to 8,9.5,6 and it didn't tune quite as nicely as the previous
> numbers.  This piano was used three our four times during a week during
> recital season, the ends of semesters.  Those CAUTs know what I mean.  I
> also had a concert hall piano I might tune three or four times a week,
> regularly, except during July and August.  Same situation.  THese pianos
> did end up getting master tunings stored in the SAT for repeat tunings.
>
> DOes that make sense to you?

Why yes ... and thanks.  It still doesnt quite answer my query... but it narrows
the field of possible anwers quite a bit.

I see I need to read a bit more about how the SAT calculates a tuning.

>
>
> Regards,
>
>                 Newton
>

Richard Brekne
RPT, N.P.T.F.
Bergen, Norway
mailto:rbrekne@broadpark.no




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