high humidity (was tapping strings)

[Ron Nossaman]

>This discussion brings another anomoly to mind. When laminated
>soundboards first became common, I expected that, whatever the sonic
>results, at least pitch would be more stable in response to humidity
>swings, because the board would expand/shrink much less. But experience
>hasn't born this out. At least my own experience seems to show no
>difference whatsoever in pitch variation in response to humidity swings
>between solid and laminated boards.
>	Anyone care to comment?
>Regards,
>Fred Sturm

When a bridge swells and pushes the string up the angled pins, the string
must take a longer path between pins, raising tension, therefor pitch. How
much of the pitch change associated with humidity swings is from soundboard
rise and fall, and how much from bridge dimensional changes? 

Ron N