Use a duodecime spanner tool and tune this duodecime (or twelfth) interval aurally pure with the vintage "whole tone" technique used for aurally pure octaves so far. And forget about tuning one specific partial pair of the octaves pure. They are different on every piano and on each position and absolutely meaningless in this tuning concept. Bernhard Stopper Am 15.04.2009 um 18:25 schrieb Jeff Deutschle: > Ed: > > Thank you for the reply. > > I know the 3:1 test that you mention and also a 6:2 test for beatless > 12ths, but Mr. Stopper has repeated many times that his 12ths are not > beatless but at a “sweet spot”. I am hoping to learn what the aural > tests for this “sweet spot” are. > > I’ve been playing with octaves that have equal beating 4:2 and 6:3 > partials which result in an inherent 2:1 beat; meaning that the iH of > the piano inherently requires a certain beat rate of the wide 2:1 > partials when the wide 4:2 partials beat at the same speed as the > narrow 6:3 partials. My biggest problem is that I tune few pianos that > have a clear enough tone to ghost the partials (the RBI tests aren’t > accurate enough for this) and have a pinblock capable of a very fine > tuning. If I like the sound, I hope to be able to hear it directly and > tune it without ghosting or first finding this inherent beat rate > first by ghosting. Of course this inherent beat rate will not be the > same for all octaves. > > > On Wed, Apr 15, 2009 at 12:02 PM, Ed Sutton <ed440 at mindspring.com> > wrote: >> Who can question words like "Pure" and "Natural?" >> ["I tune impure octaves by listening to unnatural beats."] >> >> I'd like a simple, carefully crafted demonstration where several >> people tune >> their favorite octaves on a variety of pianos (A2-A3-A4-A5), and we >> record >> and measure the tunings. >> >> Then we might find out something specific that we can name and >> reproduce. >> >> Ed S. >> >> Jeff- >> To check a pure 12th, use the use the M6-M17 test, thus, for example: >> F3-D4=F3-A5. The beat of the sixth is very clear, and the seventeen >> should >> beat the same. >> ES >> >> ----- Original Message ----- From: "Jeff Deutschle" >> <oaronshoulder at gmail.com> >> To: <pianotech at ptg.org> >> Sent: Wednesday, April 15, 2009 7:33 AM >> Subject: Re: [pianotech] Aurally pure octaves >> >> >> Kent: >> >> What are the "associated aural checks" for PureTuner? I continue to >> wait for Mr. Stopper's explanation. >> >> On Tue, Apr 14, 2009 at 11:35 PM, Kent Swafford >> <kswafford at gmail.com> wrote: >>> >>> Hey, this could be good. How about if you come in and do a tuning >>> concert? >>> (Don't know what piano we'll have.) And then as time allows I can >>> break >>> out >>> 'PureTuner and its associated aural checks. >>> >>> I know I will learn much; I can't wait. >>> >>> Kent >>> >>> >>> On Apr 14, 2009, at 6:42 PM, David Andersen wrote: >>> >>>> >>>> On Apr 14, 2009, at 3:05 PM, Kent Swafford wrote: >>>> >>>>> I came away more convinced than ever that whole sound tunings and >>>>> OnlyPure Tuner tunings are chasing after the same muse. I must >>>>> say at >>>>> this >>>>> point that I think whole sound tuners can learn much and bring >>>>> more >>>>> reliable >>>>> results by incorporating 'PureTuner techniques. >>>>> >>>>> Care to compare notes at Pianotech Live in Grand Rapids? 8^) >>>> >>>> Absolutamente, mi amigo. My mind is open and humbly excited to >>>> learn.... >>>> >>>> DA >>>> >>>> >>> >>> >>> >> >> >> >> -- >> Regards, >> Jeff Deutschle >> >> Please address replies to the List. Do not E-mail me privately. >> Thank You. >> >> >> >> >> > > > > -- > Regards, > Jeff Deutschle > > Please address replies to the List. Do not E-mail me privately. > Thank You. >
This PTG archive page provided courtesy of Moy Piano Service, LLC