On Wed, 7 Nov 2007 11:50:27 -0500, "Joseph Meehan"
wrote:

http://www.soundproofing.org/

In general you want to block air exchange. Air caries sound very well.
(Try opening your car's window as a train is going by.)

Next you want weight. Heavy things (drywall lead sheets etc.) block
sound well.

You also want to prevent any direct solid connections. Stagger wall
studs or use special isolation devices to keep the sound from traveling
through the wall (remember the two cans on a string (well wire actuarially
worked) you want to break the wire).

Filling in wall cavities with sound absorbing materials (accustical
fiberglass bats) will do a little.

Point source control (special absorption material) at the source of the
sound will also help.


"samurai" sammer003 @ yahoo.ca.spam wrote in message
.. .
What can I use to reduce the noise coming from downstairs, where it
has a suspended ceiling??

The main floor has hardwood floors, house built in the 50's. The
downstairs has a suspended ceiling with 2x4' tiles. The floor
downstairs is laminate.

Would insulation between the floor joists help?
What suspended ceiling tile would work? Brand, name?

Any other recommendations?

samurai.


right now it's got the cheap, standard ceiling tile with a NRC=.5.
Would adding another layer of the same tile help?

Home Depot here carries an insulation called Rocksol for the floor
joists, which has been recommended by some ceiling stores here. I
will install the Rocksol for sure, just wondering on what kind of tile
to use for the ceiling.