mike_mccue
 
2. Have significant mass
 
3. Be physically as large in surface area as the longest wavelength you want to affect
 

So what your saying is that if I am sitting or standing in a room I am acting as my own bass trap.

:-)
 
 

quantumeffect
So what your saying is that if I am sitting or standing in a room I am acting as my own bass trap.

Yup. Better if you get somebody else to stand in the corner, though.
 
Everyone who's played live knows that the sound you get during the soundcheck will always be different than the sound you'll get that night with the room full of people. People do in fact make excellent acoustical absorbers. My own density is high enough that I should get a discount on concert tickets in recognition of my contribution to the room sound.
 
Here in Seattle is one of the finest acoustical spaces in the world, a concert hall named Benaroya Hall. Its design actually addresses the problem of varying absorption depending on how many human bodies are present. The absorption characteristics of each seat matches the absorption of a human body, so the room sounds the same whether it's empty or sold out.

{Image Deleted, thanks APG}
I noticed something was up!
 
T

best solution i've found, for damping early reflections:
 
http://www.audimutesoundp...proofing-blankets.aspx

These probably work better at approximately 25%, or less, of the cost:
 
Wool blanket
 

Yowch. Those Audimute blankets are kinda pricey at 3 for $169. I'll stick with packing blankets from U-Haul.
 
At least the vendor is honest about their acoustical properties, promising only that they're as good as acoustical tile or foam.
 
 

nope, none of that stuff works as good as the audimute blankets.
none of them.
 
i've tried them all.
 
i bought the audimute, precisely because they do exactly what they are advertised to do.
in the big scheme of things, it is still the biggest bang for the buck of any treatment you can do.
 
unless you just want 4 walls of roxul.
LOL
and that does not sound good at all.
 
with this, you can dictate where the reflective surfaces stay, and it's not permanent.
 

I've tried a lot of them too, and wool outperforms cotton, pound for pound, any day of the week.
 
best regards,
mike

it might be worth your trouble to study this product a little bit.