coupled motions

Don drose@dlcwest.com
Sat, 07 Nov 1998 16:18:14 -0600


Hi,

I decided to try an experiment.

The tools:

RCT for win95 using a pzm microphone , 40" Gerhard spinet equipped with
humdity control and tuning stabilized to no note moved more than 2 cents on
yearly tunings. 

The note:

F4 (it is good enough for Dr. S, so it should be a good choice), microphone
resting with the mic facing the piano strings and the edge of the mic just
being missed by the f4 key, music desk removed.

RCT set with no calculated tuning (like a SAT with no stretch calculation
or fac)

The f4 was played 20 times then tuned aurally to the best of my ability.
Readings are taken sequentially so as to minize drift due to heating or
other factors.

f4 at f4 all three wires.

-2.50;-2.59;-2.38;-2.04;-1.49

f4 at f4 bass wire

-.94;-1.31;-1.76;-1.45;-1.05

f4 at f4 middle wire

-.84;-1.41;-1.25;-1.50;-1.22

f4 at f4 treble wire

-.99;-.70;-.73;-1.10;-1.48

f4 at f5 all wires

-.50;-.93;-.82;-.47;-.90

f4 at f5 bass wire

+.49;+.48'+.38;+.23;-.10

f4 at f5 middle wire

+.20;+.03;-.32;-.13;+.01;-.06

f4 at f5 treble wire

+.28;-.10;-.34;-.01;-.34

f4 at c6
all
+4.52;4.51;4.45;4.80;4.44
bass
+4.44;+4.44;4.57;4.49;4.54
middle
+4.64;+4.69;4.63;4.68;4.76
treble
+4.73;+4.55;4.50;4.67;4.66

f4 at f6
all
6.37;5.84;5.71;5.91;5.62
bass
6.15;5.94;5.95;5.43;5.44
middle
7.16;6.46;5.71;5.73;5.44
treble
6.17;5.51;5.54;5.87;5.68

f4 at a6
all
-3.24;-3.03;-2.62;-3.19;-2.76
bass
-2.42;-2.39;-2.51;-2.59;-2.54
middle
-2.75;-2.40;-2.64;-2.71;-2.40
treble
-2.89;-2.57;-2.64;-3.10;-2.98

f4 at c7
all
18.60;18.54;18.88;18.61;18.62
bass
18.89;19.11;18.11;18.91;18.95
middle
18.55;18.56;18.80;18.33;18.99
treble
18.86;18.74;18.74;19.07;18.86
Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.
"Tuner for the Centre of the Arts"
drose@dlcwest.com
http://www.dlcwest.com/~drose/
3004 Grant Rd.
REGINA, SK
S4S 5G7
306-352-3620 or 1-888-29t-uner



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