Question 1

To have an idea of what to expect, will this block someone in the next room with thin walls from hearing conversations in an office env?

Accepted Answer

For that to happen is quite costly and would require construction! You see sound moves in a wave, like water! Wherever there is space, sound will go there to get out! So....think the air vents, door frames, windows, and air gaps in the celular structure of the wall! Not only that though, sound vibrates things, and those things then re-produce that sound through vibration as well! So to kill sound you need mass! First thing you do is grab some MLV-mass loaded vinyl and cover your wall that you don't want people listening to you through! Then after doing that cover the MLV on the wall with another layer of drywall! If you can leave a 1" airgap between the MLV and the new layer of drywall! Then do the same to the ceiling! Then get special air-vents, and seal them from sound! Then on the walls put these all over the wall's on the entire room! Not on every single square inch of space, just around the room from crotch to head height! And that should work! Oh and get a door that's super thick and made of real wood, and not hallow! The heavier the better, the thicker the better, the more mass the better! The more mass you have the more soundproof it is!

Question 2

can this be effective in blocking generator noise?  what dBL reduction can be expected? building a generator box

Accepted Answer

Absolutely do not buy this for that, just pick up the heavy grade sound absorb material, just literally type in "sound absorbing material" in search box above and you will get a load of choices. http://www.amazon.com/s/ref=nb_sb_ss_i_3_12?url=search-alias%3Daps&field-keywords=sound+absorbing+material&sprefix=sound+absorbing+material%2Caps%2C151

Question 3

How many panels come in this order.. Is it 4 like reflected on the picture or is it only one panel?

Accepted Answer

You get only 1 panel. They are just showing you the different colors they come in. The panels are somewhat expensive but I feel they are well worth it. They are also easy to hang on the wall.

Question 4

I am trying to reduce sound and echo in a cafeteria area. The dimensions are approximately 40x80 feet. How many of these tiles do you think I need?

Accepted Answer

These panels appear to be quite effective in the small home recording studio I have.  For a large area, some might argue the simple answer is the more the better.  I think the main aim in your situation is to significantly cut the way sound waves bounce around a room, rather than achieving a more complete sound absorption desirable in a recording studio. I would aim to place the panels vertically about midway up each wall, leaving a space of perhaps no more than six feet between each.  It's important to ensure that panels on opposing walls are not directly opposite each other.  That way, a blank space on one wall should have a panel directly opposite it on the wall facing it, and visa versa.  You are aiming to minimise sound waves bouncing between two hard surfaces.  So, for example. you might have 10 panels on each long wall, staggered so as not to face each other, and maybe five or six on each shorter wall, again staggered so as to face a blank wall space on the opposite wall. If you have the budget and the room height, suspending some panels from the ceiling with a few inches gap between them and the ceiling should add considerably to the effect.  Hope that helps

ASIN	B002WLGW66
Best Sellers Rank	#3,950 in Musical Instruments ( See Top 100 in Musical Instruments ) #124 in Recording Studio Acoustical Treatments
Brand	ATS Acoustics
Brand Name	ATS Acoustics
Coverage	8 Square Feet
Customer Reviews	4.6 out of 5 stars 683 Reviews
Included Components	Mounting Hardware and Installation Template Included
Item Dimensions L x W	48"L x 24"W
Item Thickness	2 inches
Item Weight	8.3 pounds
Manufacturer	ATS Acoustics
Manufacturer Part Number	B-FB-Black-Bvl
Manufacturer Warranty Description	ATS Acoustics products are warranted to be free of defects in material or workmanship for one (1) year from the date of shipment.
Material	Wood
Material Type	Wood
Model Number	B-Black-Beveled
Number of Items	1
Number of Packs	1
Product Dimensions	48"L x 24"W
Recommended Uses For Product	Recording studios, home theaters, houses of worship, and auditoriums
UPC	689466275049

ATS Acoustics Sound Absorbing Acoustic Panel 24" x 48" x 2" Beveled Edge (Black)

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