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Reference
Glossary
Bitstream
This is the compressed form of digital signals. A decoder decodes
these signals into 5.1 surround and multi-channel signals.
Channel (when referring to DVD)
Sound is divided into channels based on the sound’s role.
For example, 5.1 channel
³Front speakers—1 left channel and 1 right channel
³Center speaker—1 channel
³Surround speakers—1 left channel and 1 right channel
³Subwoofer—1 channelk0.1 (the ratio of bass to the total amount
of sound output)
Examples as shown in the on-screen menus
3/2 .1ch
.1: Subwoofer signal
(not displayed if there is no subwoofer signal)
0: No surround
1: Mono surround
2: Stereo surround (left/right)
1: Center
2: Front leftiFront right
3: Front leftiFront rightiCenter
Dolby Pro Logic
A surround system where a 4-channel audio track is recorded as
2 channels and then is restored to 4 channels for play. The surround
channel is monaural.
DTS Digital Surround
This surround system is used in many movie theaters around the
world. The separation between channels is good and the compres-
sion ratio is low, so realistic sound effects are possible.
DTS soundtracks are produced with the assumption that all chan-
nels will be used.
Dynamic range
Dynamic range is the difference between the lowest level of sound
that can be heard above the noise of the equipment and the highest
level of sound before distortion occurs.
Finalize
This process allows DVD-R to be played on compatible equipment.
Frame and field
Frames are the still pictures that go together to make a moving pic-
ture. A frame is made up of two fields.
³A frame still is made up of two alternating fields, so the picture may
appear blurred, but overall quality is high.
³A field still is not blurred, but it has only half the information of a
frame still so picture quality is lower.
Linear PCM
This is a form of signal that has been digitized without compressing
it. CDs are recorded with 44.1 kHz/16 bit PCM, while DVDs use
PCM between 48 kHz/16 bit and 96 kHz /24 bit, allowing reproduc-
tion of greater quality sound.
The linear PCM signals output from the DIGITAL AUDIO OUT,
OPTICAL terminal are stereo (2 channel).
Frame Field Field
Component video output (Y, PB, PR)
The luminance (Y) and color difference (PB and PR) signals are sep-
arated for output so colors are reproduced faithfully. The output form
differs from that for 480P progressive output.
Decoder
A decoder restores the coded audio and video signals on DVDs to
normal. This is called decoding.
Direct navigator
This is a list of programs you have recorded. You can select pro-
grams from the list to view. The list also shows the date and time of
recording, the channel, and the titles of titled programs. The select-
ed program is played in the background, making selection even
simpler.
Dolby Digital
This is a method of coding digital signals developed by Dolby Labo-
ratories. Apart from stereo (2-channel) audio, these signals can also
be 5.1-channel audio. A large amount of audio information can be
recorded on one disc using this method.