Tuning time -- String Seating

[Cy Shuster]

I just learned that when you're tuning an octave above the last undamped 
note, you can get some very strong sympathetic vibrations that sound a lot 
like a false beat, from the undamped strings an octave below (and in fact, 
we use that as a precise guide to pitch).  It follows that any rear or front 
duplex could also cause the same effect.

I heard a loud, 7 bps oscillation recently (on a grand with rear duplex) 
that wasn't affected in the least by pressure on the speaking bridge pin, or 
sliding around to a different spot on the capo bar.  Time to try the sock 
full of sand as a damper?

--Cy Shuster--
www.nbss.org
Class of '06