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101
GB
Album
Section of a music piece or an image on a data
CD containing MP3 audio tracks or JPEG files.
Chapter
Subdivision of a title on a DVD. A title is
composed of several chapters.
Digital Cinema Sound (DCS)
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 the
reproduction of music, Digital Cinema Sound is
designed specifically for the enjoyment of
movies.
Digital Infrared Audio Transmission
Recent times have been witness to the rapid
spread of DVDs, Digital Broadcasting Satellite
Receiver and other high-quality media. In order
to ensure that the subtle nuances endowed by
these high-quality media would be transmitted
with no accompanying deterioration, Sony
developed a technology called “Digital Infrared
Audio Transmission” for the infrared
transmission of digital audio signals using no
compression, and it introduced it into the DAV-
LF1.
This technology transfers digital audio signals
using no compression inside the subcarrier
frequency band allocated by the IEC
(International Electronic Committee) and
JEITA (Japan Electronics and Information
Technology Industries Association) for hi-fi
audio transmission applications. (See Fig. 1)
Dolby Digital
This movie theater sound format is more
advanced than Dolby Surround Pro Logic. In
this format, the surround speakers output stereo
sound with an expanded frequency range, and a
subwoofer channel for deep bass is
independently provided. This format is also
called “5.1,” with the subwoofer channel
designated as the 0.1 channel (since it functions
only when a deep bass effect is needed). All six
channels in this format are recorded separately
for superior channel separation. Furthermore,
since all the signals are processed digitally, less
signal degradation occurs.
Dolby Digital EX
An enhanced compatible format of Dolby
Digital 5.1, developed by Dolby Laboratories
and Lucasfilm THX, which can be used for
6.1(three surround speakers) channel playback,
using matrix encoding.
Dolby Pro Logic II
Dolby Pro Logic II creates five full-bandwidth
output channels from two-channel sources. This
is done using an advanced, high-purity matrix
surround decoder that extracts the spatial
properties of the original recording without
adding any new sounds or tonal colorations.
x Movie mode
The Movie mode is for use with stereo television
shows and all programs encoded in Dolby
Surround. The result is enhanced sound field
directionality that approaches the quality of
discrete 5.1-channel sound.
x Music mode
The Music mode is for use with any stereo music
recordings, and provides a wide and deep sound
space.
Dolby Surround Pro Logic
As one method of decoding Dolby Surround,
Dolby Surround Pro Logic produces four
channels from two-channel sound. Compared
with the former Dolby Surround system, Dolby
Surround Pro Logic reproduces left-to-right
panning more naturally and localizes sounds
more precisely. To take full advantage of Dolby
Surround Pro Logic, you should have one pair of
surround speakers and a center speaker. The
surround speakers output monaural sound.
Glossary
L
R
5432
6
[MHz]
Analog
transmission
Digital transmission (Digital
infrared Audio Transmission)
Fig. 1 Signal spectrum for digital infrared audio
transmission
continued