Sony STR-V333ES - Glossary

Glossary
Surround sound
Sound that eonsists of three elements:
direct sound, early reflected sound
(early reflections) and reverberative
sound (reverberation). The acoustics
of tile surrounding space affect tile
way these three sound elements are
heard. Surround sound coi-nbines
these sound elements in such a way
that you actually can sense tile size of
tile venue, as well as its type.
•Typesof sound
Reverberation
Early reflections
• Transitionof soundfrom rear speakers
Direct sound
Level
Early
reflections
Reverberation
Early reflection time
Time
Dolby Pro Logic Surround
As one method of decoding Dolby
Surround, Dolby Pro Logic Surround
produces four channels fi'om two-
channel sound. Compared with tire
forlner Dolby Surround system,
Dolby Pro Logic Surround reproduces
left to-right panning more naturally
and localizes sounds more precisely.
To take full advantage of Dolby Pro
Logic Surround, you should have one
pair of rear speakers and a center
speaker. Tile rear speakers output
nronaural sorlnd.
Dolby Digital (AC-3)
This sound fornrat for i'novie theaters
is more advanced than Dolby Pro
Logic Surround. In this fk)rlnat, tire
rear speakers output stereo sound
with an expanded fl'equency range
and a suh -woofer channel tbr deep
bass is independently provided. This
tbrmat is also called "5.1" because tile
sub woofer channel is counted as 0.1
chamml (since it fkmctions only when
a deep bass effbct is needed). All six
channels in this forinat are recorded
separately to realize superior channel
separation. Furthermore, since all tile
signals are processed digitally, less
signal degradation occurs. The name
"AC 3" comes from the fact that it is
tire third audio coding method to be
developed by the Dolby Laboratories
Licensing Corporation.
Digital Cinema Sound
This is the generic name of the
surround sound produced by digital
signal processing technology
developed by Sony. Unlike previous
surround sound fields mainly
directed at tile reproduction of illusic,
Digital Cinema Sound is designed
specifically for the enjoyment of
inovies.
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