[CAUT] P-12ths was: Tuning a Steinway D and a Bosendorfer Imperial together

[Kent Swafford]

I stand by my statement: "Same thing with the P12th ET."
Brekne's way of tuning a P12th temperament may very well be to "actually
tune Perfect 12ths", but I would suggest that a real-world approach to P12th
tuning would and should allow some modifications to yield the most pleasing
results.


Kent


On Mon, Oct 13, 2008 at 5:54 PM, Richard Brekne <ricb at pianostemmer.no>wrote:

> I knew there was something about this sentence that bothered me... and I
> just hit on it.
>
>
>       When we tune 12 tone to the octave ET we modify the tuning for
>   aesthetic reasons and to deal with the change in inharmonicity
>   across the scale and to
>       tune the treble as sharp as we like to hear.
>
>       Same thing with the P12th ET.
>
> Wrong... its not the same. The whole point of tuning a P-12th tuning is to
> actually tune Perfect 12ths. Indeed... that orientation IS the stretch
> priority and our personal preferences for treble stretch are disposed of.
>  The reason the P 12th works like it does in the piano is that it takes each
> instruments inharmonicity into consideration on the fly. You tune D3's 3rd
> partial to 440... so A4 gets its fundamental to 440.  You read the resultant
> 3rd partial for A4 and you tune E6's fundemental to that. B7's fundemental
> is then already decided in similar fashion. And of course... what these all
> turn out to be is different for each piano.  Tuning the treble as sharp as
> we like to hear simply defeats the purpose and the effects of tuning to a
> strict perfect 12th priority scheme.
>
> Cheers
> RicB
>
>
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