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English
Glossary
Dolby Digital
This is a digital audio compression format that was developed
by Dolby Laboratories. Dolby Digital encoding method (so-
called discrete 5.1 channel digital audio format) records and
compresses the left front channel, right front channel, center
channel, left rear channel, right rear channel, and LFE
channel (total 6 channels, but LFE channel is counted as 0.1
channel, therefore called 5.1 channels) signals digitally. Each
channel is completely independent from other channel signals
to avoid interference, therefore, you can obtain much better
sound quality with stereo and surround effects.
To reproduce these original surround signals, you need to
connect an amplifier or a decoder compatible with Dolby
Digital.
DTS Digital Surround
Another discrete 5.1 channel digital audio format, available
on CD, LD, and DVD software, developed by Digital Theater
Systems, Inc.
Compared to Dolby Digital, audio compression rate is
relatively low. This fact allows DTS Digital Surround format
to add breadth and depth to the reproduced sounds. As a
result, DTS Digital Surround features natural, solid and clear
sound.
To reproduce these surround signals, you need to connect an
amplifier or a decoder compatible with DTS Digital
Surround.
Linear PCM
This is a digital recording format that is used for audio CDs.
Playback Control (PBC)
When a VCD has the PBC (Playback Control) function, you
can enjoy menu-driven operations and high-resolution still
pictures.
Sampling Frequency, Quantization Bits
When analog signals are converted into digital signals, they
are divided into many points and digitized. This dividing
method is called “sampling.” The sampling frequency
indicates how many points one second is divided into – for
example, for CD sound, one second is divided into 44100
points since its sampling frequency is 44.1 kHz. On the other
hand, the number of quantization bits indicates the volume
size used to memorize each divided point.
The larger this number is, the clearer the sound can be
reproduced.
Output signal through the DIGITAL OUT (OPTICAL) terminal varies according to the
“DIGITAL OUT (OPTICAL)” setting. See “Setting the DVD Preference (System)” on page 29.
DIGITAL OUT BITSTREAM LPCM
Playback Disc Output Signals
DVD 48 kHz, Linear PCM 48 kHz, Linear PCM 48 kHz, Linear PCM
96 kHz, Linear PCM 48 kHz, Linear PCM 48 kHz, Linear PCM
128 kHz, Linear PCM 48 kHz, Linear PCM 48 kHz, Linear PCM
Dolby Digital Dolby Digital bitstream Down mixed (2 channels)
DTS Digital Surround DTS bitstream None
Video CD, Audio CD 44.1 kHz, 16 bit Linear PCM 44.1 kHz, 16 bit Linear PCM 44.1 kHz, 16 bit Linear PCM
Audio DTS CD DTS Digital Surround DTS bitstream None
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