Hi Ron. If Stopper stated his tuning is not a P-12ths tuning... then I am quite sure he has no problem with the implementation of said I have on Tune-lab, or the many ear tunings based on exactly the same setting of intervals. Since this clearly is not his position... something is not quite right with your clues line up. As far as what works on all pianos... The P12ths tuning I do most certainly does work on all pianos. About the only thing you need to take regard to is which kind of 12ths coincidental you use in the bass. But thats the same kind of thing we do in octave tunings. Stopper does not discount inharmonicity per se... nor does any sensible tuning. Cheers RicB >From RicB: ...You can quite easily accomplish a P-12ths tuning ..." Let's follow the <thin> clues we have so far. 1. Stopper has stated that his tuning is NOT a P-12ths tuning. 2. I've experimented with P-12ths tunings, they don't seem appropriate for many types of pianos. 3. Kent stated that he's tried the OnlyPure on many types of pianos and the tuning "worked" for all of them. 4. Stopper's definition of "pure" is not the same as the traditional tuner's nomenclature of a partial match. (something about where the sum of beats of all relevant partial matches of octave and octave-fifth are at a minimum...) So where does that lead? Not to a simple Tunelab curve. It's an interesting puzzle. Especially since Stopper seems to discount inharmonicity - the software seems to work without any measurements from the piano to customize the tuning. Ron Koval Concordia University
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