Peterson 490ST Strobe tuner....good?

Richard Brekne richard.brekne@grieg.uib.no
Fri, 28 Jun 2002 11:58:10 +0200



 Bradley M. Snook wrote:

>RicB, what is it about tuning curves that have you unconvinced?
>

Its just that the closer I look at calculated tuning curves, the less reliable
the actually seem. In the end you are left with a set of frequencies for 1
partial for a seiers of notes. How the remaining partials line up depends on
the piano. Im begining more and more to get the feeling that this really
results in a non ET tuning...albiet a nice one but still. The even progressive
rates of M3rds for example... dont seem so even after all... sometimes even in
high quality instruments.

Another thing that bothers me is the growing veiw that a piano that has a
scaling which does not conform well to this one partial priority approach is
per definition poorly scaled. I am far from certain that the determinant
criteria for a finely scaled piano should be defined thus. Never mind other
valid concerns about scaling.

The new Verituner seems to be a device that is meant to deal with some of this
to be sure. It would be interesting to see how similiar its approach to
deciding frequencies for partials, and which partial (s) to listen to at any
given time compare with the decision making algorithms in older ETD's. 


>The real problem that I have with the strobe tuners is that, even though
>there is some means of adjustment, the tuning curves are based on generic
>models, not that of specific measurement taken from the piano on which you
>are working. There are so many ways of generating specialized tuning
>curves,
>so indeed, there is no one way to approach the issue of inharmonicity.

Yes.... and its important to keep that fact in the forfront of  such tuning
discussions IMHO.

>
>I am not so crazy about the software that is currently available, but I do
>like the approaches that are being taken. Software simply gives the
>technician more information on which to make decisions.

I aggree its interesting, but I am not sure I aggree with your second point. To
be sure there is more information provided. That doesnt at the same time mean
that less information is actually being used. 

Like I say... I am still learning about what these tuning curves really are,
and how they really correspond to actual pianos..... and I am kind of a skeptic
when it comes down to it. Still, my experience is leading me to be more
skeptical rather then less.

>Bradley M. Snook


Richard Brekne
RPT NPTF
Griegakadamiet UiB



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