Sony DHC-AZ33D Operating Instructions Manual page 137

Dolby Pro Logic II
This technology converts 2 channel
stereo recorded audio into 5.1 channels
for playback. There is a Movie mode
for movies and Music mode for stereo
sources such as music. Old movies
encoded in traditional stereo format can
be enhanced with 5.1 channel surround
sound.
Movie mode
The Movie mode is for use with stereo
television shows and all the programs
encoded in Dolby Surround. The result
is enhanced sound field directionality
that approaches the quality of discrete
5.1-channel sound.
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 Dolby Surround
decoding, 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 advantages of Dolby Surround
Pro Logic, you should have one pair of
surround speakers and a center speaker.
The surround speakers output monaural
sound.
DTS
Digital audio compression technology
developed by DTS, Inc. This technology
conforms to 5.1-channel surround. The
surround channel is stereo and there
is discrete subwoofer channel in this
format. DTS provides the same 5.1
discrete channels of high quality digital
audio. The good channel separation is
realized because the all channel data
is recorded discrete and processed in
digital.
DVD VIDEO
A disc that contains up to 8 hours of
moving pictures even though its diameter
is the same as an AUDIO CD. The data
capacity of a single-layer and single-
sided DVD VIDEO, at 4.7 GB (Giga
Byte), is 7 times that of an AUDIO CD.
Furthermore, the data capacity of a dual-
layer and single-sided DVD VIDEO is
8.5 GB, a single-layer and double-sided
DVD VIDEO 9.4 GB, and a dual-layer
and double-sided DVD VIDEO 17 GB.
The picture data uses the MPEG 2
format, one of the worldwide standards
for digital compression technology. The
picture data is compressed to about 1/40
of its original size. The DVD VIDEO
also uses variable rate coding technology
that changes the data to be allocated
according to the status of the picture.
The audio data is recorded in Dolby
Digital as well as in PCM, allowing you to
enjoy more realistic audio presence.
Furthermore, various advanced functions
such as the multi-angle, multilingual, and
Parental Control functions are provided
with the DVD VIDEO.
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