[pianotech] Soundboard deflection - Pitch raise

[Ron Nossaman]

PAULREVENKOJONES at aol.com wrote:
>  
>  
> In a message dated 8/4/2009 10:09:55 P.M. Central Daylight Time, 
> rnossaman at cox.net writes:
> 
>     The very fact that it happens in pianos without measurable
>     crown or bearing (observable and measurable by anyone who
>     might incredibly harbor a secret wish to actually know), ought
>     to clear it up somewhat.
> 
> It goes in the direction of clarity by addressing variables, but define 
> somewhat. :-)
>  
> P

I can't imagine how it could be even somewhat ambiguous. What 
other factors beyond bearing and crown will affect soundboard 
deflection with tension changes? Or are we going to where 
everything is in some level of structural failure at all 
times, grasshopper?
Ron N