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Audio Design Associates
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HALL - This mode is supposed to sound like a hall and is useful for playback of chamber music. Here,
the L, C, R, SUB, LS, and RS Output channel lamps are on.
CLUB - This mode is supposed to sound like a dance club and is useful for playback of music videos
and other dance music. Here, the L, C, R, SUB, LS, and RS Output channel lamps are on.
CHURCH - This mode is supposed to sound like a church and is useful for playback of choral music.
THX Enhancements
For either Dolby Digital, Dolby Digital EX, DTS, or DTS ES, THX enhancements can be turned on
or off. THX is an exclusive set of standards and technologies established to make your experience of
the film soundtrack as faithful as possible to what the director intended. Movie soundtracks are mixed
in special movie theaters called dubbing stages and are designed to be played back in movie theaters
with similar equipment and conditions. The soundtrack created for the movie theater is then trans-
ferred directly onto Laserdisc, VHS tape, DVD, etc., and is not changed for playback in a small home
theater environment. THX engineers developed patented technologies to accurately translate the sound
from the movie theater environment into the home, correcting the tonal and spatial errors that occur.
When the THX mode is on, the following three THX technologies are automatically added after the
decoded signal:
Re-Equalization™ - The tonal balance of a film soundtrack will be excessively bright and harsh when
played back over audio equipment in the home because the film soundtracks were designed to be
played back in large movie theatres using very different professional equipment. Re-Equalization restores
the correct tonal balance for watching a movie soundtrack in a small home environment.
Timbre Matching™ - The human ear changes our perception of a sound depending on the direction
from which the sound is coming. In a movie theater, there is an array of surround speakers so that the
surround information is all around you. In a home theater, you use only two speakers located to the side
of your head. The Timbre Matching feature filters the information going to the surround speakers so
that they more closely match the tonal characteristics of the sound coming from the front and surround
speakers.
Adaptive Decorrelation™ - In a movie theater, a large number of surround speakers help create an
enveloping surround sound experience, but in a home theater there are usually, only two speakers. This
can make the surround speakers sound like headphones that lack spaciousness and envelopment. The
surround sounds collapse into the closest speaker as you move away from the middle seating position.
Adaptive Decorrelation slightly changes on surround channel’s time and phase relationship with respect
to the other surround channel. This expands the listening position and creates—with only two
speakers—the same spacious surround experience as in a movie theater
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