wrote in message
...
On Mon, 05 Jan 2009 17:24:18 GMT, (Richard
Casady) wrote:
On Mon, 5 Jan 2009 03:34:14 -0500, "Eisboch"
wrote:
"Calif Bill" wrote in message
...
House a couple blocks away is home to a porfessional drummer. Has
built a
practice room inside the garage. Totally isolated from the garage and
heavily soundproofed. You can barely hear him when the garage is open.
I knew a guy who saved (and had all his neighbors save for him) the egg
cartons that a dozen eggs came in at the store. This was back when they
were made of cardboard and not Styrofoam.
He stapled them to the walls, ceiling and inner door surfaces of his
practice room an apartment. Once he had all the surfaces covered, you
could
barely hear him anywhere else.
Eisboch
They made 12x12 hatchery industry ones, which were the standard of the
audio industry.
Casady
Besides, the egg cartons don't keep sound from being transmitted
outside. They only serve to discourage and dissapate reflected sound
in the room where they are installed. If done to extremes with the
right materials and knowlege, you end up with an anechoic chamber,
which is surprisingly undesirable for a recording studio. Totally dead
is not totally good!
That's a debatable subject among the home theater building crowd.
I built a pretty decent theater in an unused garage in one of the Florida
houses.
Bought some high end speakers, (including an 18" digital Velodyne sub),
constructed a huge screen using screen paint on carefully finished drywall.
The projector was a fairly decent Hitachi.
Anyway, we made the room virtually dead acoustically with carpeting, heavy
drapes and acoustic panels. It was a weird sensation just standing in the
room and talking. If you clapped your hands hard, there was absolutely no
echo.
But, when you played a movie in surround, the room came alive. The theory
behind an acoustically dead room for home theater is that the main, center,
side and rear surround speakers will do all the imaging and the audio will
sound as it was intended to be heard by the producer with no additional
effects introduced by the room acoustics and echo's. Good sound tracks done
in surround have the desired acoustical effects recorded in.
Eisboch