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Techno Tidbits & Problem-solving
THX
THX is a Lucasfilm, Ltd. program dedicated to maximum
accuracy in movie presentation. Movie sound tracks are
recorded in large movie dubbing stages using movie
theater equipment. For a sound track to be presented
accurately in your home, special technologies are
required. In your home the room is much smaller and
has a bright sound, the speakers are very different and
there are only six of them, plus, you sit much closer to
each one of those speakers. Because of these differences
we often miss the power and emotion that thrills us in a
good movie. Now Pioneer and THX have teamed up to
bring the full glory of accurate cinema sound to the
comfort and convenience of your home.
Re-Equalization™ : In a theater the room is very large
and dead sounding, you sit a long way back from the
speakers and the speakers themselves are very
specialized. Because a sound track recorded in this dead
sounding space when it is played at home it sounds
overbright. THX Re-Equalization adjusts for this
difference in a very precise way.
Dynamic Decorrelation™ : When a sound track sends
mono sound to the surround speakers it often seems to
be coming come from one side instead of from all
around you as it would in a theater. Dynamic
Decorrelation helps to correct this inaccuracy.
Timbre Matching™ : When recording a sound track it is
very important that the surround sounds move smoothly
and seamlessly around the theater. It is very distracting
when sounds seem to jump from speaker to speaker.
Timbre Matching helps to smooth the movement of the
surround sounds even though you are using only two
speakers.
Bass Peak Level Manager™ : Some Dolby Digital and
DTS soundtracks can produce bass peaks that are
undesirable in a home theater environment. The Bass
Peak Level Manager allows you to set the maximum
peak levels appropriate to your system. (Set this function
according to the bass peak level instructions on page
32.)
Loudspeaker Position Time Synchronization™ : This
feature allows you to adjust for the difference in the
distance from each individual loudspeaker to the
listening position. Doing this ensures that all the
speakers operate in precise synchronization improving
the seamless nature of the soundfield. (Set this function
according to the channel delay instructions on page
28.)