Dear dude-guy:
On Sep 30, 7:41*am, dude-guy wrote:
On 29 Sep., wrote:
....
Yes, this is also what I thought...
Polymer = good at damping vibrations...
Glass = has higher density...
What should I choose?
Both, if sandwiched.
OMG... Now we're back again to the mass
discussion. Is mass (real glass, not
polymers) the most important thing or is it
the ability to absorb noise (polymers, lower
density)?
What makes you think there is only one "most important thing"? You or
others have said they can hear voices outside their mulitply-glazed
windows near resonant frequencies. Dampening, such as provided by a
polymer substrate, can reduce even that noise.
Some people say glass is the only thing to
consider (double layer) and now you say
polymer (since there's already glass)... Is it
strange I'm confused?
Yes. Read the word "sandwich" above. Glass for mass, polymer for
dampening.
As to mathematics:
http://hyperphysics.phy-astr.gsu.edu.../restube2.html
.... and just adjust the lengths arrived at by 2/3, since this is based
on one end open. But until you know the bell's tone / frequency
range...
....
Almost anything will be better than nothing.
Yes, agreed and something must (and will)
happen... I just want "the best solution" and
get to a good understanding of the important
variables to choose the solution from (before
spending my money on something that
could later turn out to be more or less
useless)...
Anything you do, even "non-optimal" but still recommended on this
group, will be a noticeable improvement.
David A. Smith