The pitch-raise calculator is designed to be used with a tuning in memory in order to pitch raise the entire piano to a
realistic piano-tuning curve. Choose a page in memory with a piano similar to the one to be pitch raised or measure and
store an FAC tuning. The pitch-raise calculator offsets the SAT the number of cents necessary to pitch raise the piano to
the stored tuning (not just to the zero-cents line).
To access a page of memory, turn the SAT on, press the TUNE button, hold down the SHIFT button, and press PAGE up
or down to access the correct page.
Let's start at A0, so after selecting the correct page, press NOTE up, then NOTE down. To use the pitch raise calculator,
hold the MEASURE button down while striking A0 until the lights stop (or nearly stop). Continue to hold the MEASURE
button down and press (roll over to) the SHIFT button, then release MEASURE, then release SHIFT. The SAT
automatically offsets itself by one-quarter of the measured flatness. (For Example, a flatness of 40 cents will
automatically result in an offset value of 10 cents sharp). Tune with the calculated offset for an octave or so, then repeat
the measurement on the next untuned note to get a new pitch-raise correction. The correction changes quite slowly on a
normal piano, and needs to be recalculated five or six times to cover the entire keyboard.
The pitch correction factor of one-quarter is designed to work with the "unisons-as-you-go" method of pitch raising. One
quarter may be a little too much in the bass, and not quite enough in the high treble, but the error involved is never more
than a few cents. You can modify the number given by the SAT if you wish. If the SAT calculates 10 cents, but you think
8 cents is better, just enter -2 cents and store this offset (Hold SHIFT and press RST button). The net offset will be 8
cents. Usually it will not be worth the trouble to try to outguess the pitch-raise calculator.
With the "unisons-last" method of pitch raising, the calculated correction will be a little light in the plain-wire section.
Whatever the calculator gives for a correction on the plain wires, add one-third more to it. For example, if the calculator
indicates 15 cents offset, add 5 to that for a net offset of 20 cents. A word of caution about overpulling too much in the
treble as you could be close to the breaking point of a string.
Pitch lowering is just the reverse of pitch raising (to a piano), and the program works just as well for lowering pitch as for
raising it. Just follow the above procedure, no changes have to be made.
THE RESET BUTTON
The Reset Button has four major functions:
1. Resetting to Non-Standard Pitch.
2. Perfecting the A-440 of a Stretch Tuning.
3. Displaying the Cents Offset.
4. Measuring the Width of Musical Intervals.
1. Resetting to Non-Standard Pitch:
The RST (reset) button is used to reset the cents display to zero without actually changing the pitch of the instrument
itself. This is very useful in several ways. The first is setting the SAT to a non-standard pitch. For instance, to tune an
instrument to A at 442 Hz, which is 8.0 cents sharp, turn the SAT on and then press the TUNE button, then step the
CENTS display up to 8.0 cents as shown in Fig. 4.
Fig. 4. SAT just before offsetting pitch.
Now hold the SHIFT button down and press the RST button. The display will jump to zero cents as shown in Fig. 5, but
will actually be at 442 Hz (8.0 cents sharp). Now your tuning can proceed exactly as it would normally, except the tuning
will end up at 442 Hz. (This assumes your stored tuning is at 440 Hz.)