CTE-Master Tuning

[Joe And Penny Goss]

Hi Fred,
It is possible to change the SATll  program numbers of a FAC tuning and not
know that they have been changed. Only a hard copy will verify the correct
numbers.
 I know this to be a fact because a few years back when I was using the
canned tuning programs and using the offset to a different pitch, several of
the programs that were being used a lot suddenly were not giving a smoth
progression and had to be reprogramed.
I have not noticed this with the SATlll as I always take new FAC readings
and do not use the canned programs.
Also the DO function is available to change the program sharper or flatter.
Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
----- Original Message -----
From: "Avery Todd" <atodd@UH.EDU>
To: <caut@ptg.org>
Sent: Thursday, January 10, 2002 11:34 AM
Subject: Re: CTE-Master Tuning


> Fred,
>
> I think what people are talking about is that with humidity changes, the
> piano can change, thereby affecting the FAC numbers, thereby affecting
> the "Master Tuning", in this case. This has been being talked about
> lately on the pianotech list about the climate changes changing the FAC
> numbers somewhat.
>
> I suppose it's "possible" for the SAT to drift, I don't really know. I
> just noticed that I didn't have the smooth progression of thirds in the
> temperament that I always strive for. That's what got me started checking
> things.
>
> Thanks for the post.
>
> Avery
>
> >This notion that the SAT "adjusts" tunings without being told to is, I
> >think, apocryphal. It is not an "active" machine. What's in memory is
> >simply in memory. The calculating function only happens when you
> >activate it, with some difficulty (sequences of key pushes that are
> >unlikely to happen by accident).
> > I guess it might be possible that some electronic/media corruption
> >could happen over time. If that should be the case, there's an easy way
> >to check whether the numbers in the memory have changed. You should have
> >a hard copy of the master tuning somewhere. Scroll through what's
> >recorded on the SAT and see if the numbers are the same as the hard
> >copy.
> > With respect to making any changes in a master tuning, definitely do it
> >by committee.
> >Fred Sturm
> >University of New Mexico
> >
> >Dennis Johnson wrote:
> >>
> >>  I remember listening to a discussion with Sanderson about the fact
that
> >>  sometimes the SAT can make small adjustments to a particular memory
> >>  over time if it is not used regularly. Something about the machine
> >>  calculating what it perceives to be a "correction", based relatively
on
> >>  the other numbers. For whatever the reason, we are not recommended to
use
> >>  master tunings we store in memory for long periods. They should be
redone
> >>  every year even if using the same piano. Just copy it, fix it, then
record
> >>  it again.
> >>
> >>  ______________________
> >>  ______________________
> >>
> >>  Dennis Johnson
> >>  Piano Technician
> >>  St. Olaf College
> >>  Northfield, MN. 55057
> >>  (507) 646-3587 shop
> >>  (507) 646-3527 fax
> >>  (612) 529-6123 home