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DTS-ES Extended Surround is a new multichannel
digital signal format developed by Digital Theater
Systems Inc. While offering high compatibility with
the conventional DTS Digital Surround format,
DTS-ES Extended Surround greatly improves the
360-degree surround impression and space
expression thanks to further expanded surround
signals. This format has been used professionally
in movie theaters since 1999.
In addition to the 5.1 surround channels (FL, FR, C,
SL, SR and LFE), DTS-ES Extended Surround also
offers the SB (Surround Back) channel for surround
playback with a total of 6.1 channels. DTS-ES
Extended Surround includes two signal formats
with different surround signal recording methods,
as DTS-ES Discrete 6.1 and DTS-ES Matrix 6.1.
“DTS”, “DTS-ES and “Neo:6” are trademarks of
Digital Theater Systems, Inc.
The stereo CD is a 16-bit medium with sampling at
44.1 kHz. Professional audio has been 20- or 24-
bit for some time, and there is increasing interest in
higher sampling rates both for recording and for
delivery into the home. Greater bit depths provide
extended dynamic range. Higher sampling rates
allow wider frequency response and the use of
anti-alias and reconstruction filters with more
favorable aural characteristics.
DTS 96/24 allows for 5.1channel sound tracks to
be encoded at a rate of 96kHz/24bits on DVD-
Video titles.
When DVD-video appeared, it became possible to
deliver 24-bit, 96 kHz audio into the home, but only
in two channels, and with serious limitations on
picture. This capability has had little use.
DVD-audio allows 96/24 in six channels, but a new
player is needed, and only analog outputs are
provided, necessitating the use of the D/A
converters and analog electronics provided in the
player.
DTS 96/24 offers the following:
1. Sound quality transparent to the original 96/24
master.
2. Full backward compatibility with all existing
decoders. (Existing decoders will output a 48
kHz signal)
3. No new player required: DTS 96/24 can be
carried on DVD-video, or in the video zone of
DVD-audio, accessible to all DVD players.
4.96/24 5.1-channel sound with full-quality full-
motion video, for music programs and motion
picture soundtracks on DVD-video.
“DTS” and “DTS 96/24” are trademarks of Digital
Theater Systems, Inc.
Dolby Digital identifies the use of Dolby Digital
audio coding for such consumer formats as DVD
and DTV. As with film sound, Dolby Digital can
provide up to five full-range channels for left,
center, and right screen channels, independent left
and right surround channels, and a sixth (“.1”)
channel for low-frequency effects.
Dolby Surround Pro Logic II is an improved matrix
decoding technology that provides better spatiality
and directionality on Dolby Surround program
material; provides a convincing three-dimensional
soundfield 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 Surround 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. (Such material is also compatible with
conventional Pro Logic decoders.)
Dolby Digital EX creates six full-bandwidth output
channels from 5.1-channel sources. This is done
using a matrix decoder that derives three surround
channels from the two in the original recording.
For best results, Dolby Digital EX should be used
with movies soundtracks recorded with Dolby
Digital Surround EX.
About Dolby Pro Logic
II
x
Dolby Pro Logic IIx technology delivers a natural
and immersing 7.1-channel listening experience to
the home theater environment. A product of
Dolby's expertise in surround sound and matrix
decoding technologies, Dolby Pro Logic IIx is a
complete surround sound solution that maximizes
the entertainment experience from stereo as well
as 5.1-channel encoded sources.
Dolby Pro Logic IIx is fully compatible with Dolby
Surround Pro Logic technology and can optimally
decode the thousands of commercially available
Dolby Surround encoded video cassettes and
television programs with enhanced depth and
spatiality. It can also process any high-quality
stereo or Advanced Resolution 5.1-channel music
content into a seamless 6.1- or 7.1-channel
listening experience.
The Dolby Headphone technology provides a
surround sound listening experience over headphones.
When listening to multichannel content such as
DVD movies over headphones, the listening
experience is fundamentally different than
listening to speakers. Since the headphone
speaker drivers are covering the pinna of the ear,
the listening experience differs greatly from
traditional speaker playback. Dolby utilizes
patented headphone perspective curves to solve
this problem and provides a non-fatiguing,
immersive, home theater listening experience.
Dolby Headphone also delivers exceptional 3D
audio from stereo material.
Manufactured under license from Dolby
Laboratories. “Dolby”, “Pro Logic”, and the double-
D symbol are trademarks of Dolby Laboratories.
Circle Surround II (CS-II) is a powerful and
versatile multichannel technology. CS-II is
designed to enable up to 6.1 multichannel surround
sound playback from mono, stereo, CS encoded
sources and other matrix encoded sources. In all
cases the decoder extends it into 6 channels of
surround audio and a LFE/subwoofer signal. The
CS-II decoder creates a listening environment that
places the listener “inside” music performances
and dramatically improves both hi-fi audio
conventional surround-encoded video material.
CS-II provides composite stereo rear channels to
greatly improve separation and image positioning–
adding a heightened sense of realism to both audio
and A/V productions.
CS-II is packed with other useful feature like dialog
clarity (SRS Dialog) for movies and cinema-like
bass enrichment (TruBass). CS-II can enable the
dialog to become clearer and more discernable in
movies and it enables the bass frequencies
contained in the original programming to more
closely achieve low frequencies–overcoming the
low frequency limitations of the speakers by full
octave.
Circle Surround II, TruSurround XT, Dialog Clarity,
TruBass, SRS, and
symbol are trademarks
of SRS Labs, Inc.
Circle Surround II, TruSurround XT, Dialog Clarity
and TruBass technologies are incorporated under
license from SRS Labs, Inc.
HDCD
®
(High Definition Compatible Digital
®
) is a
patented process for delivering on Compact Disc
the full richness and details of the original
microphone feed.
HDCD encoded CDs sound better because they
are encoded with 20-bits of real musical
information as compared to 16-bits for all other
CDs.
HDCD overcomes the limitation of the 16-bit CD
format by using a sophisticated system to encode
the additional four bits onto the CD while remaining
completely compatible with the CD format.
When listening to HDCD recordings, you hear
more dynamic range, a focused 3-D sound stage,
and extremely natural vocal and musical timbre.
With HDCD, you get the body, depth and emotion
of the original performance not a flat, digital
imitation.
HDCD system manufactured under license from
Microsoft. This product is covered by one or more
of the following: In the United States 5,479,168
5,638,074 5,640,161 5,808,574 5,838,274
5,854,600 5,864,311 5,872,531 and in Australia
669,114 with other patents pending.
05.4.27, 5:33 PMPage 3