Alpine DVA-7996 - Manual (Page 49)

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Terminology
Dolby Digital
Dolby Digital is a digital audio compression technol-
ogy 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 chan-
nels 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-
H510/PXA-H900/PXA-H700) is required to enjoy
full 5.1-channel surround sound.
The DVA-7996 performs Dolby Digital decoding
when it outputs analog audio signals, it just happens
to be 2-channel audio not 5.1-channel.
Speaker layout for enjoying
Dolby Digital sound/dts sound
Center
speaker
Front
speakers
Rear
speakers
Subwoofer
DTS
This is a home-use digital sound format of the DTS
Sound System. This is a high quality sound system,
developed by Digital Theater Systems Corp for use
in movie theaters.
DTS has six independent sound tracks. The theater
presentation is fully realized in the home and other
settings. DTS is the abbreviation for Digital Theater
System.
* To enjoy DTS surround sound you need the
separately sold DTS digital audio processor
(PXA-H900/PXA-H700). The DVD video software
must also have a DTS sound track.
The DVA-7996 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
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-
H510/PXA-H900) is required to enjoy Dolby Pro
Logic 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 function of the DVD for restricting the
viewing age as stipulated by laws in different coun-
tries. 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.
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 advance, 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-
H700) is required to enjoy Dolby Pro Logic II
surround sound.
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