[pianotech] Aurally pure octaves

[Richard Brekne]

Ron.

I think this is exactly in line with what I said. I am very well 
acquainted with what the Verituner does and doesn't. Indeed, two months 
before its release I went on record complaining about the single partial 
approach and got snowed on by a few folks for thinking it was even 
possible to do a multi-partial ETD. It does not listen to the note to be 
tuned before deciding its target, which was central to the point I made 
about ETD's not being able (at present) to find any sweet spot. The 
other central moment is the degree of para inharmonicity at this level 
of accuracy. It needs to be taken into account to find any sweet 
spot....which implies direct comparison of both notes simultaneously.... 
at the very least.  That is precisely what ear tuners... especially 
those disciples of Smith do that an ETD doesn't.

Cheers
RicB


    You may want to revisit your research into the Verituner.  While not
    listening to the ENTIRE spectrum of at least two different notes, it
    does use the information from a good number of partials to make
    tuning target placement choices.  Combined with a thoughtful use of
    the custom style function, the technician can dictate which two or
    more notes are to be compared when calculating the tuning for each
    specific note.  I've advocated a two-pass tuning for a number of
    years to allow the machine to have all of the inharmonicity data
    during the fine tuning pass.  The Verituner really is different from
    the rest in that respect.  The result is NOT a smooth curve tuning
    at any single partial level.  
     
    Ron Koval
    Chicagoland