Sound waves(The behavior of soundboards)

Richard Brekne Richard.Brekne@grieg.uib.no
Sun, 23 Dec 2001 16:45:25 +0100


Ron Nossaman wrote:

> >What is at issue is whether the strings move the soundboard by
> >displament of the bridge, and the answer to this question is
> >fundamental to an understanding of the acoustics of the piano.
> >
> >JD
>
> Yes it is, and since you've read everything I have to offer on the subject,
> I'm about finished. If physically displacing a string and measuring bridge
> movement doesn't do it for you, there's nothing else I can add that will.
> Ron N

Oh come on Ron,... Physically displacing one string with your finger in no way
simlulates the real life situation of the vibrating system. Of course you can
push the bridge and sound board down with your fingers. That does not show, nor
does anything else you have had to say so far, that the board gets moved by the
bridge which is moved up and down and forward and backswards physically by the
strings vibrating. No offense meant, but proofing something to be true or false
requires a little bit more then opinion,  unsupported declarations of some
insight into the realm of physics, and oversimplified examples that are
questionable in terms of their relevance to the subject matter at hand.

Now, none of this means I am taking sides with JD on this... I am not at all
convinced he is correct, tho I find his thoughts interesting enough. It only
means that I fail to see how anyone should feel justified in having
satisfactorilly refuted his position. I have seen a lot of scoffing and the
like.

Well well, I suppose I will get to follow the conclusion of this thread after
Christmas. I hope you all enjoy your holidays !


Richard Brekne
RPT, N.P.T.F.
Bergen, Norway
mailto:rbrekne@broadpark.no




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