longitude wave voicing

[b98tu at t-online.de]

Chris,
You can try to tune sthe string about 50-100 cent flat. If the ringing
disappears, it is a longitudinal wave coupling with a transversal
harmonic. No chance for plain strings, you must change speaking length
or string material in that case.
If it is a wrapped string, you can eliminate it by changing the core to
winding ratio.

regards,

Bernhard Stopper

-----Original Message-----
Date: Sat, 14 Jun 2008 20:19:42 +0200
Subject: longitude wave voicing
From: Christopher Glattly <cglattly at rochester.rr.com>
To: pianotech at ptg.org

Hello List,

Just renewed the list last month and been reading... I'm considering  
a voicing issue in the octave above middle C that sounds like  
harmonic longitude wave coupling.  It is a shimmery sound about 4  
octaves above the fundamental and it "appears" shortly after attack  
and decays along with the rest of the sound.  I can barely hear it  
but it is driving the owner nuts (very sensitive and somewhat  
obsessive......).  The hammers are ready for shaping but the trial  
hammer that I changed didn't seem to change the problem sound.  A bit  
of voicing seemed to reveal the problem even a bit more.

Does this sound to anyone like a problem consistent with a  
longitudinal wave scaling/voicing issue?  Any other ideas?

Thanks in advance,
Chris Glattly RPT
cglattly at rochester.rr.com