3
DTS was introduced in 1994 to provide 5.1 channels of
discrete digital audio into home theater systems.
DTS brings you premium quality discrete multichannel digital
sound to both movies and music.
DTS is a multichannel sound system designed to create full
range digital sound reproduction.
The no compromise DTS digital process sets the standard of
quality for cinema sound by delivering an exact copy of the
studio master recordings to neighborhood and home
theaters.
Now, every moviegoer can hear the sound exactly as the
moviemaker intended.
DTS can be enjoyed in the home for either movies or music
on of DVD's, LD's, and CD's.
"DTS" and "DTS Digital Surround" are registered trademarks
of Digital Theater Systems, Inc.
The advantages of discrete multichannel systems over
matrix are well known.
But even in homes equipped for discrete multichannel, there
remains a need for high-quality matrix decoding. This is
because of the large library of matrix surround motion pictures
available on disc and on VHS tape; and analog television
broadcasts.
The typical matrix decoder of today derives a center channel
and a mono surround channel from two-channel matrix
stereo material. It is better than a simple matrix in that it
includes steering logic to improve separation, but because of
its mono, band-limited surround it can be disappointing to
users accustomed to discrete multichannel.
Neo:6 offers several important improvements as follow,
· Neo:6 provides up to six full-band channels of matrix
decoding from stereo matrix material. Users with 6.1 and
5.1 systems will derive six and five separate channels,
respectively, corresponding to the standard home-theater
speaker layouts.
· Neo:6 technology allows various sound elements within a
channel or channels to be steered separately, and in a way
which follows naturally from the original presentation.
· Neo:6 offers a music mode to expand stereo nonmatrix
recordings into the five- or six-channel layout, in a way which
does not diminish the subtlety and integrity of the original
stereo recording.
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.
2. TECHNICAL DESCRIPTION
