
The goal of a Home Theater is to create a cinema quality experience in
the comfort of your own home. Doing it requires more than just a big screen TV
and some speakers. There are two main parts of Home Theater: sound and
pictures. The sound is actually the most important part because it creates the
most important effect — the feeling that you're actually in the
environment on the screen.
The
picture part of your Home Theater begins with a high quality video source like
Laserdisc, DVD, digital satellite, or HDTV decoder. Both sound and pictures
from these sources are far superior to VHS tape The
standard for Home Theater surround sound is Dolby Digital®, DTS and THX It's
far superior to its predecessor, DTS. It delivers clearer dialog and a more
realistic sense of atmosphere. It's sometimes referred to as 5.1 because there
are 5 full range channels of sound plus another channel dedicated to low
frequency effects, called LFE. Producing high quality surround sound requires a DTS processor (often
incorporated in an A/V receiver or preamplifier), 5 speakers and a sub-woofer,
plus amplification for the speakers. The processor decodes the surround sound
information from the DVD or Laserdisc movie, HDTV or satellite broadcast.
The
left, center, and right front speakers reproduce the on-screen action: dialog,
music, and sound effects like left to right motion. The left and right rear
speakers create the 3D effect — the illusion of space. They're essential to
recreating front to back motion effects like jet aircraft fly-over's. And
finally, a sub woofer (sometimes more than one) is used to reproduce the LFE:
the very low sounds of explosions or earthquakes. The placement of the
speakers in your room is very important to the over-all effect. So is the
character of your floors, walls and ceiling (hard surfaces reflect sound, soft
surfaces absorb it).
Creating the film-like images for Home
Theater requires screen sizes from 32" to 100 or more feet. Direct-view
televisions (CRTs), rear projection TVs, and video projectors can all be used,
but quality varies greatly among different models. The
best pictures are created through a combination of high resolution,
accurate geometry, and proper color, contrast, and brightness settings. Having
your set professionally setup is worth the money.
Home
Theater systems often have many pieces of equipment which must be controlled.
Adding a programmable remote control to simplify operation is an investment
that will pay off immediately in convenience and ease-of-use Automated
lighting and window coverings complete the home theater experience. It's easy
to incorporate control of these 'atmosphere' elements with your system
controller
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