Hi Cy, Yes, 20 cents pitch change will affect the tuning curve calculated by an ETD. So will changes in humidity. Over time, if a piano is kept at a particular pitch, inharmonicity may often become lower too--so it is best to remeasure at every service call. YMMV I disagree about using a "stored tuning" for pitch correction. At 09:02 AM 2/12/2009 -0700, you wrote: >If iH is greater at lower tension, this should be a reminder to ETD >users not to count on measurements made when the piano is >significantly below pitch. > >When I could only tune with an ETD, at first I measured iH on every >piano before tuning. I realized later it was better for a piano I'm >seeing for the first time to measure existing pitch using a tuning >file I already have for a similar piano, then pitch raise, and then >measure iH to create a custom file for this piano. > >Will the iH error be significant for a piano 20 cents flat? > >--Cy-- > >Cy Shuster, RPT >ABQ, NM >www.shusterpiano.com > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.0.234 / Virus Database: 270.10.23/1949 - Release Date: 02/11/09 11:13:00 > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-539-0716
This PTG archive page provided courtesy of Moy Piano Service, LLC