Terminology
Dolby Digital
is
a digital audio compression technology
developed by Dolby Laboratories that allows large quantities
of audio data to be efficiently recorded on discs. It is
compatible with audio signals from mono
(1
channel) all the
way up to 5.1-channel surround sound. The signals for the
different channels are completely independent, and since the
sound
is
high quality digital there
is
no loss of sound quality.
* The separately sold digital audio processor (PXA-H70l, etc.) is
required to enjoy full S.l-channel surround sound.
The DHA-S690 performs Dolby Digital decoding when it
outputs analog audio signals; 2-channel audio, not 5.1-
channel.
Center
speaker---M~~=z~~~
Front
speakers
Rear
speakers
Subwoofer
Speaker layout for enjoying
Dolby Digital sound/DTS sound
This is a home-use digital sound format of the
DTS
Sound
System. This is a high quality sound system, developed by
DTS,
Inc. for use
in
movie theaters.
DTS
has six independent sound tracks. The theater
presentation is fully realized
in
the home, etc.
DTS
is
the
abbreviation for Digital Theater System.
*
To
enjoy DTS surround sound you need the separately sold DTS
digital audio processor (PXA-H70l,etc.). The DVD video software
must also have a DTS sound track.
The DHA-S690 has a built-in
DTS
2-channel audio decoder.
Analog audio outputs are available.
Dolby
Pro
Logic is the technology used to decode programs
encoded
in
Dolby Surround.
Pro
Logic decoding will provide
you with four channels of sound (front left/right, center and
monaural rear surround) from a 2-channel (stereo) source.
* The separately sold digital audio processor (PXA-H70l, etc.) is
required to enjoy Dolby Pro Logic surround sound.
Dolby
Pro
Logic
II
plays 2-channel sources
in
5 channels over
the entire frequency range.
This is done with an advanced, high sound quality matrix
surround decoder which draws out the spatial properties of the
original recording without adding any sounds to or changing
the sound of the source.
* The separately sold digital audio processor (PXA-H70l, etc.)
is
required to enjoy Dolby Pro Logic II surround sound.
LPCM is a signal recording format used for music CDs.
Whereas music CDs are recorded at
44.1
kHz/16 bits, DVDs
are recorded at
48
kHz/16 bits to 96 kHz/24 bits, thereby
achieving higher sound quality than music CDs.
This is a
DVD
function for restricting the viewing age as
stipulated by censorship laws
in
different countries. The way
in
which viewing
is
restricted differs from
DVD
to DVD.
Sometimes the
DVD
cannot be played at all, other times
certain scenes are skipped, and other times certain scenes
are replaced with other scenes.
29-EN
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