[CAUT] pitch rise with harder blow on Steinway 'D's (R. Brekne)

Jonathan Moberg jonmoberg at att.net
Sat Jun 6 13:37:46 MDT 2009


Hi Richard, 
 
This may or may not be related but I thought I would share some similar things I have noticed for whatever it may be worth.
 
   I have noticed  especially in this area (G4-E5) of some S&S D's (and other pianos as well) that I get a drop (or rise) in pitch, both audible and measureable with the accu-tuner of sometimes close to 6 or 8 cants . If played just slightly harder the pitch rises. On a lighter blow it is lower pitched.
 
In this area there also may be strange  and variable downbearings, side bearings,aliquotsegment lengths and maybe upward pull on on parts of the bridges from note to note that I have imagined to be a poosible factor.
 
I have also noticed that this is not as noticable at all times of the year-or maybe it's my touch.
 
Jonathan Moberg


--- On Sat, 6/6/09, caut-request at ptg.org <caut-request at ptg.org> wrote:


From: caut-request at ptg.org <caut-request at ptg.org>
Subject: CAUT Digest, Vol 8, Issue 9
To: caut at ptg.org
Date: Saturday, June 6, 2009, 1:00 PM


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Today's Topics:

   1. String Coupling / SB and Bridge stiffness (Richard Brekne)

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