I am no math wiz, but I have the PSCALE program that Tremaine Parsons created, and it has a feature that tells you the total tension of a scale.? In it's library of sample scales, I checked the total tension of a Steinway Model A Grand, a Vose Upright and a Mason & Hamlin Model A Grand at A440, then at A442.? In those three examples it gave the tension increase at around 300 lbs, (which is around 136kg?) I expected a higher number, and probably there are pianos that have a bigger change.? But for me, the three pianos I checked seem like a pretty typical sample of what I work on. Gordon Large, RPT Hallowell, Maine >David Skolnik wrote:? >>Renee -? >>Someone who knows the math will eventually respond to your second >>question, or at least point you in a direction. With regard to the >>primary question, the only meaningful outcome would require either >>an extremely elevated and knowledgeable response rate or someone to >>do the Larry Fine-esque research. Put together a list of world >>orchestras, contact them, ask about their pitch standard, then do >>secondary research to find out what they */really/* play at. Then >>you'll have a pretty reliable picture. You could also contact the >>concert departments of piano manufacturers around the world for >>similar information. Or just wait. Someone who actually knows may inform us.? >>? >>In any case, why do you ask?? >>? >>David Skolnik? >>Hastings on Hudson, NY? >>? >>? >>? >>At 10:01 AM 4/28/2009, you wrote:? >>>I was wondering what the standard concert pitch is these days. In >>>certain parts of the world, there are different meanings on the >>>subject. What is the concert pitch for orchestras in the U.S.?? >>>The question comes up every once in a while...and is always >>>followed by some discussion.? >>>Also, does anyone know how much one raises the tension ( in >>>kilograms) in a grand when raising the pitch from 440 to 442?? >>>? >>>Renee? ? ? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090428/e03a6901/attachment.html>
This PTG archive page provided courtesy of Moy Piano Service, LLC