Technical information

receivers incorporate DSP programs to generate ambient multichannel sound
from stereo sources.
DST Direct Stream Transfer. Lossless compressed DSD.
DTS Digital Theatre System. A high quality digital surround sound compression
format capable of carrying multiple channels of audio. While using perceptual
encoding like many other systems, it uses much lower levels of compression. DTS
claims that it first uses non-lossy compression techniques to reduce or eliminate
the need for perceptual encoding. Many users consider that it produces higher
quality sound than Dolby Digital. DTS sound tracks come on DVD encoded at
either 768kb/s or 1,536kb/s. (Note, the 'k' here stands for 1,000, not 1,024).
The principle advantage of DTS over Dolby Digital is the implementation of DTS in
the cinema. Rather than the digital data being optically recorded onto the film
itself, DTS audio is recorded on a CD. Special CD players attached to the
cinema's film projector keep the audio and film synchronised by means of time
sync signals on the film. The advantage lays in the fact that in distributing foreign
language sound tracks, only the CD needs to be different for each language, not
the film.
DTS 96/24 A variation on DTS. However rather than using DTS's normal 20 bits
of resolution and 48kHz sampling frequency (of the PCM data before it is
encoded), it uses a 96kHz, 24 bit source signal, offering a theoretical frequency
response to in excess of 40,000 hertz. DTS suggests that some of the higher
resolution offered by this PCM standard carries through into improved audio
quality. DTS 96/24 DVDs are backwards compatible with standard DTS
decoders.
DTS ES 6.1 Discrete A 6.1 channel version of DTS where a centre-rear channel
is held in a discrete audio channel. DTS ES 6.1 DVDs are backwards compatible
with standard DTS decoders.
DTS ES 6.1 Matrix A 6.1 channel version of DTS where a centre-rear channel is
encoded into the two normal surround channels in a similar way to that employed
by Dolby Pro Logic to hold a centre channel encoded into the two front channels.
DTS ES 6.1 DVDs are backwards compatible with standard DTS decoders.
DTS Neo:6 A processing system that endeavours to extract an engaging 6.1
channel surround experience from two channels of audio. Unlike Dolby Pro Logic,
this is not an encode/decode system, but more like a DSP system to generate
something new.
Dual layer A type of DVD in which there are two physical data layers on the disc.
The outermost one is semi-transparent, so a DVD player can focus its laser