SAT III stuff

[David Love]

I don't know about Fairchild's method, but you can certainly take
measurements without tuning notes.  Put the machine on the note to be
measured, hold the measure button until the lights stop, note the cents
offset, go up an octave and hold the measure button again until the lights
stop.  Subtract the first reading from the second and that is you stretch
number.

David Love


----- Original Message -----
From: "pianolover 88" <pianolover88@hotmail.com>
To: <pianotech@ptg.org>
Sent: January 20, 2002 10:53 AM
Subject: Re: SAT III stuff


> Jim,
>
> I was looking at an article by Steve Fairchild from the 4/96 issue of the
> PTJ. I know that you're aware of it; he outlines yet ANOTHER way of
"making
> an F.A.C. tuning". His method takes 32 steps, but doesn't require ANY
notes
> to be tuned, as the traditional method does. The only question I have is,
> (and this is not mentioned in the article) does the piano need to be close
> to correct pitch for his method to be accurate, or can the piano be at
> virtually ANY pitch, be it 50c flat, or all over the road? Thanks!
>
> Terry
>
>
> >From: "Jim Coleman, Sr." <pianotoo@imap2.asu.edu>
> >Reply-To: pianotech@ptg.org
> >To: pianotech@ptg.org
> >CC: Paul Sanderson <inventrncs@AOL.COM>, JimSr@jimwcoleman.com
> >Subject: SAT III stuff
> >Date: Fri, 06 Apr 2001 00:54:39 -0900 (PDT)
> >
> >Hi to those interested:
> >
> >A Simple Way of Using the SAT III
> >
> >It is possible to measure just one note with the SAT III
> >and begin tuning immediately. The older style F4 Stretch
> >mode can be used in conjunction with the Double Octave
> >Beat control to tailor a tuning to your personal
> >preference. Here is how to do it:
> >
> >1.  After turning on SAT, select note F and octave 5,
> >       play the note F4 and tune to stop LEDs.
> >2.  Change Octave to 6 and stop LEDs with the MSR and
> >       CENTS buttons.
> >3.  Hold down SHIFT and touch STO Stretch. Touch STRETCH
> >       button again. This IS ALL you have to do to begin
> >       tuning immediately on most pianos.
> >
> >IF YOU HAVE PERSONAL PREFERENCES CONTINUE AS BELOW
> >
> >4.  Select and TUNE A4 to stop LEDs. Change note to A3
> >       on SAT. If while playing A4, the LEDs are moving
> >       clockwise more than 1/4 revolution per second, use
> >       negative DOB to shrink the stretch by .1 or .2 beats
> >       per second.** Change note up and down to apply the
> >       DOB.
> >5.  Tune A3 to this setting. If you like it, tune the
> >       rest of the notes from A4 down to C3, listening to
> >       the Major 3rds and 5ths as they become available.
> >       If the 3rds slow down too quickly for you where the
> >       tenor bridge turns hockey-stick like, you will need
> >       to gradually erase some of the negative DOB and
> >       possibly add some positive DOB gradually until you
> >       get to the highest wound strings. At that point, it
> >       is usually necessary to erase any positive DOB to
> >       keep the M3rds in line, where the lower note of the
> >       M3rd is a wound string.
> >6.  TUNE from A4 to F6. Usually this part of the scale
> >       will work very well without any alteration. The F4
> >       Stretch program will maintain octaves at about 1/4 to
> >       1/2 beat stretch throughout this area. Some tuners
> >       prefer to tune the High Treble and Bass by ear. If
> >       you prefer some guidance in these areas for
> >       consistency sake, you can use the following
> >       additional procedures.
> >7.  After everything from C3 to F6 is tuned (the limit of
> >       the F4 style Stretch tuning), you can continue by
> >       pressing the TUNE button to get into Tune mode and
> >       continue on up to C8.
> >8.  Select F#6, Play F#4, stop the LEDs and TUNE F#6 to
> >       this setting. Do a similar thing for each note such
> >       as G6, G#6, A6, etc. to C8, tuning to a setting of
> >       the 4th partial of the note two octaves lower.
> >9.  For tuning the Bass from B2 on down to A0, set the
> >       SAT III in TUNE Mode, note F#5. Play previously
> >       tuned B3 and stop the LEDs with the cents buttons.
> >       TUNE B2 to this setting.
> >10. Continue down with setting F5, playing A#3, stopping
> >       LEDs, and tuning A#2, etc., on down to tuning A0.
> >
> >Additional procedures of simplicity.
> >
> >One could have a number of previously calculated FAC tunings
> >stored in memory, say, starting on pages 50 to 60 where the
> >page 50 used a value of A4=5 in the FAC stretch values; the
> >page 51 would have the A4 value = 5.5, etc., to page 60
> >where the A4 stretch value would be 10.0. This would give values of
> >the F6 note offset ranging from 4.8 to 9.4 respectively.
> >
> >In the F4 stretch mode, one is not likely to encounter
> >stretch numbers lower than 3.0 nor higher than 9.0 which
> >would give values of F6 offsets from 4.7 to 9.5 respectively.
> >
> >So, one could select a page of memory which has an F6 offset
> >close to the value of F6 which the F4 Stretch number gives
> >to complete the tuning to C8. If the tuning seems to stray
> >a bit from what a double octave test would require, then
> >one can incorporate the DOB to increase or decrease the
> >stretch "ON THE FLY".
> >
> >If one should on a rare occasion encounter an F4 Stretch
> >number higher than 9.0, one could use page 60 and add
> >enough reset to the machine to make up the difference
> >between what the F4 mode value for F6 as compared to the
> >FAC mode value of F6 and then use the DOB as any additional
> >stretch or shrink may be indicated.
> >
> >THE WHOLE POINT OF THIS ARTICLE IS TO SHOW THAT with the
> >measurement of ONLY ONE NOTE, one can tune the whole piano
> >with the SAT III and just the way the piano wants to be
> >tuned.
> >
> >** To invoke the DOB, hold down the SHIFT button and touch
> >    the UP or DN CENTS buttons once for each 1/10 beat/sec.
> >    increase or decrease of the double octave stretch. This
> >    will affect the single octave about half that amount.
> >
> >Jim W. Coleman, Sr.
> >
> >PS I am indebted to Joe Goss of Mother Goose Tools for
> >    part of this basic idea.
> >
> >pss For those interested in a chart of comparative values
> >     of F6 in the FAC mode and in the F4 Stretch mode, just
> >     write me privately.
>
>
>
>
> Terry
>
>
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