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Information
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.
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 Digital Theater Systems Corp for use
in movie theatres.
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
Systems.
Dolby Pro Logic II
Dolby Pro Logic II provides multichannel surround
sound from any 2 channel source. It reproduces
extended bandwidth playback with 5.1 channels.
This is made possible by an advanced matrix
surround decoder. This new decoder is able to draw
out spatial characteristics of the recording without
adding tonal coloration or artificial delays that did not
exist in the original.
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.