absorption coefficient of 12" 703 glassfiberboard

pm2 · Post by **pm2** » Sat Sep 10, 2005 9:42 pm

Hello together,

i would like to make 1/4 of my room
complete death.

What ist the absorption coefficient of
12" 703 glassfiberboard (spacing 5" out from wall)
in the lower frequency at 40Hz and 80Hz???

Thanks for answers

AVare · Post by **AVare** » Sat Sep 10, 2005 11:29 pm

Using some realistic extrapolation, 1.00 at both frequencies for random incidence and around 0.7@40 Hz and 0.9@80 Hz for normal incidence.

Andre