Additional information
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Dolby Digital Plus
Dolby Digital Plus is the next-generation audio
technology for all high-definition programming and
media. It combines the efficiency to meet future
broadcast demands with the power and flexibility to
realize the full audio potential expected in the upcoming
high-definition era. Built on Dolby Digital, the multi-
channel audio standard for DVD and HD broadcasts
worldwide, Dolby Digital Plus was designed for the next-
generation A/V receivers but remains fully compatible
with all current A/V receivers.
Dolby Digital Plus delivers multi-channel audio programs
of up to 7.1 channels (*) and supports multiple programs
in a single encoded bitstream with the maximum bit rate
potential of up to 6 Mbps and the maximum bit rate
performance of up to 3 Mbps on HD DVD and 1.7 Mbps
on Blu-ray Disc, and it outputs Dolby Digital bitstreams
for playback on existing Dolby Digital systems. Dolby
Digital Plus can accurately reproduce the sound
originally intended by directors and producers.
It also features multi-channel sound with discrete
channel output, interactive mixing and streaming
capability in advanced systems. Supported by High-
Definition Media Interface (HDMI), a single-cable digital
connection is possible for high-definition audio and video.
Dolby TrueHD
Dolby TrueHD is the next-generation lossless encoding
technology developed for high-definition optical discs in
the upcoming era. Dolby TrueHD delivers tantalizing
sound that is bit-for-bit identical to the studio master,
unlocking the true high-definition entertainment
experience on high-definition optical discs in the next
generation. When coupled with high-definition video,
Dolby TrueHD offers an unprecedented home theater
experience with stunning sound and high-definition
picture.
It supports bit rates of up to 18 Mbps and records up to 8
full-range channels (*) individually with 24-bit/96 kHz
audio. It also features extensive metadata including
dialogue normalization and dynamic range control.
Supported by High-Definition Media Interface (HDMI), a
single-cable digital connection is possible for high-
definition audio and video.
HD DVD and Blu-ray Disc standards currently limit their
maximum number of audio channels to eight, whereas
Dolby Digital Plus and Dolby TrueHD support more than
eight audio channels.
Manufactured under license from Dolby Laboratories.
Dolby, Pro Logic, Surround EX and the double-D symbol are
trademarks of Dolby Laboratories.
DTS
The DTS technologies are explained below. See
www.dtstech.com for more detailed information.
DTS Digital Surround
DTS Digital Surround is a 5.1-channel audio coding
system from DTS Inc. now widely used for DVD-Video,
DVD-Audio, 5.1 music discs, digital broadcasts, and
video games. It can deliver up to six discrete audio
channels, comprising five full range channels, including
an LFE channel. Higher sound quality is achieved
through the use of a low compression rate, and high
rates of transmittance during playback.
DTS-ES
DTS-ES (the ES stands for Extended Surround) is a
decoder that is capable of decoding both DTS-ES
Discrete 6.1 and DTS-ES Matrix 6.1 encoded sources.
DTS-ES Discrete 6.1 gives ‘true’ 6.1 channel sound, with
a completely separate (discrete) surround back channel.
DTS-ES Matrix 6.1 has a surround back channel matrixed
into the surround left/right channels. Both sources are
also compatible with a conventional DTS 5.1 channel
decoder.
DTS Neo:6
DTS Neo:6 can generate 7.1 channel surround sound
from any matrixed stereo source (such as video or TV)
and from 5.1 channel sources. It uses both the channel
information already encoded into the source, as well as
its own processing to determine channel localization
(with two channel sources, the “.1” subwoofer channel is
generated by bass management in the receiver). Two
modes (Cinema and Music) are available using DTS
Neo:6 with two channel sources.
DTS 96/24
DTS 96/24 is an extension of the original DTS Digital
Surround which offers high quality 96 kHz/24-bit audio
using a DTS 96/24 decoder. This format is also fully
backward compatible with all existing decoders. This
means that DVD players can play this software using a
conventional DTS 5.1 channel decoder.
DTS-EXPRESS
DTS-EXPRESS is a low-bitrate encoding technology
supporting up to 5.1 channels with fixed data transfer
rates. This format is incorporated with sub audio on HD
DVD and secondary audio on Blu-ray Disc while boasting
the potential applicability to upcoming broadcasts and
memory audio contents.
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