That sounds like out of tune to me... David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Mark & Janine Davis" <pianofortetechnology at saol.com> To: pianotech at ptg.org Received: 2/5/2010 1:05:18 PM Subject: [pianotech] Double Octave Stretch >Greetings List, >I have read much about piano tuners preferred octave stretch. I recently >came across a grand piano in a fairly large school hall which had been tuned >two weeks prior to me inspecting the piano on request. The octaves were >stretched 1 bps and the double octaves were beating almost 7bps. >Rick Baldassin writes in his book "On Pitch", pg 83.84,85. 'There are >widely varying opinions as to where and how much to stretch octaves, and >rather than impose my personal opinions, I choose to present facts and tests >that will allow each reader to experiment and create his or her own opinions >as to how and where stretching should be done. After all, in octave >stretching, what we are dealing with is often more a matter of artistic >preference in a grey area than random selection in black and white.Remember >that when stretching the octaves, the demands of the double octaves must >also be met.' >My questions are, what are the demands of the double octave and what is the >maximum stretch one can/does use in a big concert hall, once again >considering the double octave demand? In other words how much stretch is to >much and the reasons why? >Thank you, Mark Davis >
This PTG archive page provided courtesy of Moy Piano Service, LLC