Until I bought a SATIII (last year), and was tuning aurally, I used a 2 octave temperament starting by setting contiguous thirds from A2 to A4. It offers a nice framework in which to fit the other intervals. I used that system because it automatically forced me to adjust for the stretch in any given piano. In a spinet, for example, in order for the series to maintain a 4:5 ratio throughout, the rate must slow down a bit, unless you are artificially expanding the octave (I realize this may generate some controversy). Though I am currently using an ETD, in a concert or recording situation, I will still begin my tuning from A2 to A4 and check aurally the contiguous thirds, double octave etc., to be sure it's what I want. Adjustments I make now usually incorporate the Double octave beat function. I almost always find myself narrowing it anywhere from .2 to .5, depending on the piano. Anyway, that's another subject. David Love ----- Original Message ----- From: "Phil Bondi" <tito@PhilBondi.com> To: "Pianotech List" <pianotech@ptg.org> Sent: September 26, 2001 10:35 AM Subject: ET- Expanded Temperament..kinda long. > Hello all. > > Recently, I have begun to expand my temperament octave to be an octave and a > half. My temperament runs from F3 to F4, but recently, I have begun to > 'expand' it to include all the notes above F4 up to and including C5. > > Why? > > Well, experimenting with the best tuning I can give, and hopefully, letting > the piano tell me how it wants to sound. > > For those still listening, let me explain how I am 'expanding' the > temperament octave..oh..and by the way, if this is old news to some, my > apologies..you can delete now..but I will have a question after this is all > explained.. > > The first note I tune in the temperament octave is A3, tuned from A4..next I > tune D4 to A3..and now I am paying *alot* more attention to the D4-A4 5th > instead of just the A3-D4 4th..perhaps I should have been paying more > attention for awhile..that's another subject.. > > Next, I tune G3 to D4..once I get that 5th where I want it, I tune G4 to G3, > paying close attention to how fast the D4-G4 4th wants to beat..not too > fast, but not too slow, either. > > Then I play D4-G4-A4 simultaniously..if this is sounding smooth, I > resume..If there's some beating going on, I correct it 'if it's musically > possible'..now do you see where I'm going? > > If you know the F3-F4 pattern, then you have a pretty good idea of what > comes next as far as pattern and testing..oh..testing..since I have been > using this Expanded Temperament, I find myself not testing 6ths and 3rds > unless, while I'm setting the temperament, something is obviously > wrong..usually with me, it's the G#3-C4 third..that tends to be fast if I > have a 'mistake' somewhere. > > Anyway, when I get done with this F3-C5 temperament, I am finding that the > overall sound of the piano is a little sweeter than if my temperament was > just the 1 octave testing 3rds and 6ths along the way. > > I am still testing 6ths and inside 3rds in the Bass. > > The rest of the tenor and the treble section is tuned to single octaves, > listening to double octaves after C6 but not tuning to the double octave > like I use to do. > > I realize this is not re-inventing the wheel, but to the aural tuners out > there, do you expand your temperament and why.?.? > > Phil > > > > >
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