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GLOSSARY
■ THX MUSIC MODE
For the replay of multi-channel music the THX Music
Mode should be selected. In this mode THX ASA
processing is applied to the surround channels of all 5.1
encoded music sources such as DTS, and Dolby Digital to
provide a wide stable rear soundstage. This mode is to be
used with multi-channel music sources such as DTS 5.1
music and Dolby Digital 5.1 music.
■ B.G.C. (Boundary Gain Compensation)
If your chosen listening room layout (for practical or
aesthetic reasons) results in most of the listeners being
close to the rear wall, the resulting bass level can be
sufficiently reinforced by the boundary that the overall
sound quality becomes ‘boomy’. THX Ultra2 receivers
contain the BGC (Boundary Gain Compensation) feature
to provide an improved bass balance. BGC can be selected
by choosing ‘On’ from the ‘BGC’ section of the ‘THX
Set’ setup menu.
■ THX Ultra2
Before any home theatre component can be THX Ultra2
certified, it must pass a rigorous series of quality and
performance tests. Only then can a product feature the
THX Ultra2 logo, which is your guarantee that the Home
Theatre products you purchase will give you superb
performance for many years to come. The THX Ultra2
specification provides uncompromised eight-channel
playback of any multi-channel program, whether movie
soundtracks or music over the widest possible seating
area. In addition, all Ultra2 controllers and receivers
incorporate video switching capable of handling all wide-
bandwidth sources, including HDTV and progressive scan
DVD, without degrading the picture.
■ THX Surround EX
THX Surround EX - Dolby Digital Surround EX is a joint
development of Dolby Laboratories and the THX Ltd.
In a movie theater, film soundtracks that have been
encoded with Dolby Digital Surround EX technology are
able to reproduce an extra channel which has been added
during the mixing of the program. This channel, called
Surround Back, places sounds behind the listener in
addition to the currently available front left, front center,
front right, surround right, surround left and subwoofer
channels. This additional channel provides the opportunity
for more detailed imaging behind the listener and brings
more depth, spacious ambience and sound localization
than ever before.
Movies that were created using the Dolby Digital
Surround EX technology, when released into the home
consumer market may exhibit wording to that effect on the
packaging. A list of movies created using this technology
can be found on the Dolby web site at www.dolby.com. A
list of available DVD software titles encoded with this
technology can be found at www.thx.com.
Only receiver and controller products bearing the THX
Surround EX logo, when in the THX Surround EX mode,
faithfully reproduce this new technology in the home.
This product may also engage the THX Surround EX
mode during the playback of 5.1 channel material that is
not Dolby Digital Surround EX encoded. In such case the
information delivered to the Surround Back channel is
program dependent and may or may not be very pleasing
depending on the particular soundtrack and the tastes of
the individual listener.
■ ITU-R
ITU-R is the radio communication sector of the ITU
(International Telecommunication Union). ITU-R
recommends a standard speaker placement which is used
in many critical listening rooms, especially for mastering
purposes.
00EN.00_DSPZ9_GB.book Page 116 Thursday, November 13, 2003 10:55 AM