Sound waves(The behavior of soundboards)

[Ron Nossaman]

>The vision you and your co-thinkers have of the bodily movement of 
>the bridge, not only up and down but also in a rocking motion, 
>strikes me as completely absurd and impossible.  Throughout this 
>thread and previous related threads you have persistently poo-pooed 
>any question of waves except the sort of wave or ripple that you 
>associate with the ripples on the surface of a body.  Similarly the 
>only movement you seem to be able to comprehend is movement of a body 
>as a whole.

Once again, I understand your theory and disagree with it. It has been
acknowledged that there are also compression waves passing through the
system as well as progressive and stationary transverse waves. We've
already done this. I have never denied the existence of compression waves
in strings and soundboards. What I have said, and still say, is that they
are not the principal driver of the system. 


>  When a little while ago I challenged you to 
>substantiate a borrowed equation from Conklin relating to impedance, 
>you backed off at the speed of light and made it quite clear you had 
>no understanding of the theory of it and refused even to demonstrate 
>a practical application of this received wisdom.
>
>JD

No John, I told you that was the information I had. I also told you sources
for two more formulas that indicated something similar. It wasn't forced
upon you, I offered it to you. When I asked you to point out where I had
claimed this was the definitive end all answer, you ducked the question
with another diversion - much as you are apparently doing now by repeatedly
avoiding my question of how small a bridge movement constitutes no movement
at all. You made a very big deal of stating that a strung bridge couldn't
be moved with a crowbar, so I think it's only reasonable that you qualify
this claim with a minimum value of what constitutes movement. This is at
the very core of your theory, and I see no way that you can logically
support this theory without quantifying this claim. So let's have it and
get this over with. 

Ron N