Sound Atenuation from multilayer pannel

[pedrovazdeacrvalho]

Hello,

I have been searching all over and i cant find anything about the subject.
I would like to determine even if roughfly the sound attenuation for multilayer pannels.
The final goal its to prevent surprises in FATs for air handling units.
Does anybody knows how to do it or where to find it?

Thanks ,
Pedro

 

[GregLocock]

If you ignore interference effects it is just additive. It is probably discussed in sufficient detail in Beranek.

http://www.amazon.com/Acoustics-Leo-L-Beranek/dp/088318494X

from memory he also discusses interference (ie double glazing and the like)



Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[pedrovazdeacrvalho]

Thank you very much Greg.
Very kind for you to answer, ill order it and digg in.