While sitting in a movie theatre before the movies starts, a sudden burst of sound could be heard from all direction travelling from all around you with superb sound clarity and realism. As this happens the movie screen is filled with shattering effects and the words DTS appears. It keeps you wondering if it is possible to achieve this effect in you own home theatre system. Well, look no further the DTS Digital Surround has now expended to home theatre market.
What is DTS Digital Surround?
DTS Digital Surround is another type of encoding and decoding that
utilise six discrete channels producing digital sound. Digital sound is
when there are 6 channels or 5.1 channels of signal where it comes from
the right, center, left, left rear, right rear and a low frequency channel
being the 0.1 channel. This differs to the Pro Logic where the surround
speakers are mono. DTS is the second type of digital sound, Dolby Digital
or Ac-3 being the first. However in considering both systems, technically
DTS is by far having superior quality. DTS first appeared in the movie
theatre in the premier of the movie Jurassic Park where Steven Spielberg
was introduced to this system and saw the sonic quality of the DTS. He
decided to take up the challenge and it turned out to be a success and
research was done so it can be enjoyed by the home theatre market. This
will be taken a step further by expanding into the music industry by having
multi channel music.
What is needed to run DTS Digital Surround?
The DTS soundtrack is recorded in the digital track of the laser disc.
This will be a totally separate disc to the Ac-3 because Ac-3 is recorded
on the left analog track of the disc and that they are not compatible..
The only requirement for DTS is to have a digital output on the laserdisc
player and the DTS decoder chip. It is said that there are over 1.2 million
laserdisc players having digital output that means that there is no need
to purchase a new laserdisc player. The DTS decoder can be purchases separately
or a chip can be added to your existing amplifier as long as there are
the correct connections. Finally a laser disc encoded in DTS Digital Surround
will be needed to achieve the shattering sound. However there are a few
minor setbacks that will not course much of a problem as time progress.
The first problem is that there have been more Ac-3 titles as well as decoder
in the market, this means that Ac-3 still have the upper hand. DTS have
been working on this and have releases a few DTS laser discs and only have
a handful of licensees that can use the DTS chip on their decoder. An example
is that in Sydney Australia we have the DTS laserdisc however there is
no available decoder for the software. Therefore the success of DTS will
be on the quick implementation of the system and there no doubt DTS will
turn out a success in the home theatre market as well as for movie theaters.
Comparison of Dolby Digital and DTS Digital Surround
Dolby Digital | DTS Digital Surround | |
Date rate for 5.1 channels | 384 kilobytes per second | 1 411 kilobytes per second |
Resultant Data Compression Reduction | 12:1 | 3:1 |
Sound Quality | Audibly inferior to current CD | 20-bit sound quality superior to current CD |
Movies on laserdisc | Playable only with RF output (50 000 US households) | Playable with standard digital output (over 1.2 million US households) |
Music CD's (mixed in multichannel discrete surround) | None | Playable with standard digital output (over 4 million US household) |
Hardware decoders | 40 + licensees | 12 current licensees 40 + by January 1997 |
Theatre Installations | 1 478 North America 3 088 Worldwide |
4 180 North America 7 251 Worldwide |