Soundboard stiffness vs. string coupling

[Richard Brekne]

Ah... yes... as I expected.  Vladin was refering to more then simple 
physical coupling.  And I agree then. The requirements for this are 
strictly speaking independant of the requirements for achieving some 
<<optimized>> stiffness from the panel... however the panel gets its 
stiffness. Indeed... sometimes these can be at odds with each other.

Again... a review of the 5 lectures and Benades book is useful.

Cheers
RicB

V T wrote:

>Ron and Terry,
>
>A couple of questions:
>
>-  When you talk about string-to-bridge "coupling", do
>you mean the physical attachment of the string to the
>bridge so that the string doesn't bounce off the
>bridge, or are you thinking of the mechanical coupling
>factor - a mathematical model representing the portion
>of string energy that is coupled off to the soundboard
>via the bridge?  (My use of the word "coupling" refers
>to the second.)
>
>-  On a piano with vertical hitch pins (like a Baldwin
>Accujust), if we set the downbearing to zero on a
>single hitch pin (but leave all the other strings as
>they were), will there be a significant difference in
>tone compared to the same string when it has its
>factory adjusted downbearing?
>
>Thanks for the thoughts!
>
>Vladan
>  
>