Behringer ddx3216 Instructions Manual page 18

channel (Low-Frequency Enhanced) is used for special effects such as
earthquake grumble, bomb explosions and so on. The rear surround speakers
are used to merely reproduce background noises and may contain delayed
segments of the front speaker section. For example, the rear speakers are
used to help reenact the sensation of being in the middle of a church, being at
a bar, or to give the viewers the sensation that a fighter jet just flew by and
similar special effects.
At a typical cinema, the 3 front speakers and the subwoofer are located behind
the screen, while the surround speakers are hung in the rear half of the
cinema on the side walls.
SURROUND FORMAT VARIATIONS
®
DOLBY Stereo was first introduced in 1975, and shortly thereafter the first
popular home cinema version, DOLBY
market. In both of those, a front stereo signal + 1 center speaker signal + 1
rearward mono surround channel with a trimmed frequency were matrix-
encoded and encrypted into 2 audio tracks. In doing so, it was possible to
encode these 4 audio channels onto 2 tracks and transmit them along with the
stereo TV signal and also record it on a stereo VCR.
®
DOLBY Surround ProLogic is almost identical to the above two, but allows
for better channel separation. DOLBY
on 5.1 speaker sets possible. DOLBY
popular digital 5.1 surround format with 3 front speakers (Front Left, Front
Right, Center), a subwoofer (or LFE channel) as well as 2 completely separate
surround speakers (Surround Left & Right) with a full frequency response.
®
DOLBY Digital Surround EX adds a third surround channel coming from
behind the rear wall (Rear Surround, contrasted to Left/Right Surround on side
walls). This way, this format achieves a full 6.1 channels. Furthermore, there
are various other types of DOLBY
and TV sets. They are sold under the names DOLBY
ProLogic II Virtual Speaker, DOLBY
®
DOLBY Surround and Virtual DOLBY
®
Surround, also turned up on the
®
ProLogic II even makes reproduction
®
Digital or AC-3 is today's most
®
"Virtual Surround" formats for headphones
®
Digital Virtual Speaker, Virtual
®
Digital.
®
Headphone, DOLBY
®
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