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■ Dolby Pro Logic II
It is an improved matrix decoding technology that
provides better spatiality and directionality on Dolby
Surround programmed material; provides a
convincing three-dimensional sound field on
conventional stereo music recordings; and is ideally
suited to bring the surround experience to automotive
sound. While conventional surround programming is
fully compatible with Dolby Pro Logic II decoders,
soundtracks will be able to be encoded specifically to
take full advantage of Pro Logic II playback, including
separate left and right surround channels.
■ DTS
Digital surround sound system developed by DTS,
Inc., which provides 5.1 channel audio. With an
abundance of audio data, it is able to provide
authentic-sounding effects.
■ HDMI
HDMI (High-Definition Multimedia Interface) is the
first industrysupported, uncompressed, all-digital
audio/video interface. Providing an interface between
any source (such as a set-top box or AV receiver) and
an audio/video monitor (such as a digital television),
HDMI supports standard, enhanced or high-definition
video as well as multichannel digital audio using a
single cable. HDMI transmits all ATSC HDTV
standards and supports 8 channel digital audio, with
bandwidth to spare to accommodate future
enhancements and requirements. When used in
combination with HDCP (High-bandwidth Digital
Content Protection), HDMI provides a secure audio/
video interface that meets the security requirements of
content providers and system operators. For further
information on HDMI, visit the HDMI website at
"http://www.hdmi.org/."
■ PCM (Pulse Code Modulation)
A signal that is changed to digital format without
compression. A CD is recorded with 16-bit sound at
44.1 kHz, while DVD recording is anywhere from 16
bits at 48 kHz to 24 bits at 192 kHz, which makes it a
higher quality sound than CD.
■ Sampling frequency
The number of sampling (process for digitalizing
analog signals) per second. In principle, the higher the
sampling rate, the wider the frequency range that can
be played back, and the higher the quantized bit rate,
the finer the sound that can be reproduced.
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■ x.v.Color
A color space standard supported by HDMI version
1.3. It is a more extensive color space than sRGB, and
allows the expression of colors that could not be
expressed before. While remaining compatible with
the color gamut of sRGB standards, "x.v.Color"
expands the color space and can thus produce more
vivid, natural images. It is particularly effective for
still pictures and computer graphics.
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