peritus
The not fountain head
I was watching a History Channel show on insulation.. Looks like these might be useful in our studio world as well... Or maybe someone is already doing something useful with them... Who knows.. They're cool.. Check 'em out..
http://gfp.lbl.gov/
http://gfp.lbl.gov/
So what? Air is a gas too, which is why they call a wall stud cavity an "air" gap. But unless a gas is hermetically sealed between two leaves of "mass", sound will propagate quite easily in most gases sealed within thin membranes. Thats why double pane glass panels filled with argon are NOT useful for studio windows. But my disclaimer is is full force here. Rod, is this not true?