Terminology - Alpine S690 - DHA - DVD Changer Owner's Manual

Terminology

Dolby Digital
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-H701, etc.) is
required to enjoy full 5.1-channel surround sound.
The DHA-S690 performs Dolby Digital decoding when it
outputs analog audio signals; 2-channel audio, not 5.1-
channel.
Centre
speaker
Front
speakers
Rear
speakers
Subwoofer
Speaker layout for enjoying
Dolby Digital sound/DTS sound
DTS
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 theatres.
DTS has six independent sound tracks. The theatre
presentation is fully realized in the home, etc. DTS is the
abbreviation for Digital Theatre System.
* To enjoy DTS surround sound you need the separately sold DTS
digital audio processor (PXA-H701,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
Dolby Pro Logic is the technology used to decode
programmes encoded in Dolby Surround. Pro Logic decoding
will provide you with four channels of sound (front left/right,
centre and monaural rear surround) from a 2-channel (stereo)
source.
* The separately sold digital audio processor (PXA-H701, etc.) is
required to enjoy Dolby Pro Logic surround sound.
Dolby Pro Logic II
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-H701, etc.) is
required to enjoy Dolby Pro Logic II surround sound.
Linear PCM audio (LPCM)
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.
Rating levels (parental lock)
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.
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