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
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