detuning for the PTG tuning test

[Fred Sturm]

Terry,
	Yes, de-tuning is + and - 24 cents (alternately) in both octave 1 and 
octave 7. (I agree it is extreme - one of the things I'd like to see 
changed in the test, if only for the sake of the piano I give tests on). In 
every area of the piano the detuning spec is 4 times the tolerance. 
Tolerance is 6 cents in 8ves 1 and 7, less elsewhere (down to 1 cent in mid 
range).
	What you need to know for scoring (ie, to find out what score you get and 
whether you pass) is the multiplier for each section. These are:
Pitch: 10 x (ie, each 0.1 cent = 1 %. There is an initial tolerance of 1 
cent. Hence, + or - 3 cents from A440 is a passing score - within 80 %)
	For the rest of the segments, I believe the RCT scoring program will give 
you "points per error" (I have only used SAT for scoring tuning tests, and 
that's what it does). It is possible for an error to exceed 1 point (if it 
is twice or thrice the tolerance). The tolerance and point value is already 
calculated by the machine for the rest of the sections, which are:
1) Temperament (octave of choice, commonly F3 to F4), 2.5 is the multiplier 
(meaning 8 points is the maximum points off you can get and pass).
2) Mid-range (C3 to B4), 1.5% per point (note that this includes the 
temperament octave - those notes are counted in both sections)
3) Bass (C1 - B2) one point = 1%
4) Treble (C5 - B6) same
5) High treble (C7 - B7) same
Stability and unisons are a bit complex in computation, but the bottom line 
is that the tolerance is 1 cent, and the multiplier is high. Both are done 
C3 - B4.
Good luck, and practice well!
Regards,
Fred Sturm
University of New Mexico

--On Saturday, June 26, 2004 7:14 PM -0500 Terry Beckingham <beckt@mts.net> 
wrote:

> I have been using RCT in the exam mode to practice for the tuning test.
> Can anyone confirm that the detuning, especially in the bass is plus and
> minus 25c for the lower bass notes? This seems to be a little extreme to
> me, but that is where RCT places the detuning.
>
> Also, does anyone have the scoring sheet, and could email it to me?
>
> Thanks
>
> Terry Beckingham
> PTG Associate ( hoping to be RPT by fall)
>
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