Define "stretch". Is this something that you do above and beyond the natural tuned inharmonic result? Or are you talking about wider octaves? By how much? The word "stretch", particularly for new tuners, can be misleading and causes a lot of strange and creative intervalic phenomena. Paul In a message dated 2/7/2009 8:24:22 P.M. Central Standard Time, pianocare2 at bigpond.com writes: Sounds really good.... thanks Can you also work out the theoretical speed of 3rd, 10th, 17th etc. something like C4 and E4. I have answers with my calculations, but it may seem that your answers may be slightly different. Interesting... conflicting published versions.. now I want to burn those books! So I have another question... my "stretch" as been described as conservative by a concert tech, and he asked me for "more stretch" and unfortunately the answer was not in English, but he showed me more stretch from F4.I listen to many recordings and I have to tell you that my favourite CD was recorded at Carnegie Hall unfortunately no name of pianist, but the stretch is huge... and it sounds fantastic. -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Jeff Deutschle Sent: Sunday, 8 February 2009 11:24 AM To: pianotech at ptg.org Subject: Re: [pianotech] Do fourths beat faster? Brian: Apparently there have been articles written to prove that they do beat at the same rate. But none of the posters have explained the theoretical concept. I am working out the math for a 4 octave spread with a fourth and a fifth in each octave for 2:1, 4:2 and 8:4 octaves types using an iH constant of 0.1 at C3 that doubles every 8 semi-tones. This is a sample piano's iH from the well known "Inharmonicity of Plain Wire Piano Strings" article by Robert W. Young. I will post the results in a day or three. On Sat, Feb 7, 2009 at 3:43 PM, Brian Wilson <pianocare2 at bigpond.com> wrote: > I too did not take offence. I was disappointed that I could post my response > to the debate with some actual data, but not get an explanation to say that > I am wrong. > I have only stated what is written in text books to back up my argument. BTW > one was written by Reblitz and the other here in Australia by Wayne Stuart > which was all the Yamaha books put into one. Can't find my official Yamaha > book. If these books are incorrect, I will be having a book burning party. > Do I "count" fourths whilst tuning. No. I use them as well as other > intervals to achieve what I was taught and examined on. > My understanding of achieving E T is that lets say my temperament F3 to F4 > is that the first 4th F to A# beats just under 1 beat per second and the > last 4th beats just over 1 beat per second. I posted yesterday that we all > just say that all 4ths are 1bps. Ron N has stated "close enough to appear > that way" and David has stated they 4ths beat at the "same rolling beat" > Using the same equations as I presented, to use the same intervals one > octave higher will give me 2 beats per second (A4 D5) and then another > octave higher is 4 beats per second.(A5 D6)( Yes theory ) Do I concentrate > on the 4th in the 5 & 6th octaves. No I listen to octaves, to the 5th and > temper with a good progression of 10ths and 17ths like you and probably all > others do. > Now back to my example temperament. If I presented a piano for (my) > examination with the 4ths beating the same.. it will fail.. been there done > that.. and that is only the temperament. The 4ths are "poco a poco > accelerando" but not too much! If the 4ths gradually increase in speed from > my stated F3 F4, what happens after F4. Do they stay the same, decrease or > increase, and why? Do they seem to be the same speed? > > If there is disagreement with my explanation of the temperament, please > explain why and I will gladly harass those lecturers and technicians who > have given me such a hard time over the years. I will fire up the BBQ and > get some beer out of the fridge and have that book burning party. > Brian -- Regards, Jeff Deutschle Please address replies to the List. Do not E-mail me privately. Thank You. No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.233 / Virus Database: 270.10.16/1929 - Release Date: 4/02/2009 4:35 PM **************Great Deals on Dell Laptops. Starting at $499. (http://pr.atwola.com/promoclk/100000075x1217883258x1201191827/aol?redir=http://ad.doubleclick. net/clk;211531132;33070124;e) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090207/7a0393e5/attachment.html>
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