Owner`s manual

26
By contrast, modern soundtracks use discrete digital channels of information.
at is, each speaker has a distinct signal that is completely independent of every
other channel. is approach is clearly more desirable, since it gives the movie-
makers more creative control over the quality of your experience. Musicians also
prefer discrete formats, since it allows them to place their instruments and voices
with greater precision, to create the musical eects they desire.
ere are many multichannel signal types and processing modes available.
Table1,below,identiesthemostcommonsignalformatsandfurtherdown
Table2providesdescriptionsofthevariousprocessingmodesavailableonthe
SSP to help you sort out some of the possibilities.
Table 1: Common audio signal formats encountered in a multichannel system
Name # Chs Matrix/Discrete Comments
Analog 1 or 2 Discrete Mono or Stereo available from most
sourcesasasecondaryoutput;With
theexceptionsofTurntablesand
SACD players, sources should typically
be connected to the SSP by means of a
digital connection.
Dolby Surround
Pro Logic
4 Matrix e original matrix decoding system
designed to squeeze four channels into
two and then retrieve them.
Dolby Digital
(formerly AC-3)
Up to 5.1 Discrete e most common modern digital
signaltype,usedinHDTV,DVD,
etc. It forms the core audio portion
of the higher performance Dolby
Digital signal/stream types. Up to 5.1
channels at 48 kHz.
Dolby Digital
EX
6.1 Discrete Same as Dolby Digital but with an
extra or 7th channel recorded onto
themedia;usedtocreatearearcenter
channel or two mono rear channels in
systems congured for 7.1 channels.
EX decoding is normally applied
automatically but must be selected
manually for EX recordings made prior
to late 2001.
Dolby Digital
Plus
up to 7.1* Discrete An expansion of the Dolby Digital
core, the Dolby Digital Plus codec
supports higher bit rates, limited
to 7.1 channels at 48 kHz by the
Blu-ray Disc format* while still
remaining compatible with older
5.1 formats. is is often used when
there is not enough room on the disc
toaccommodateaDolbyTrueHD
soundtrack.
DolbyTrueHD up to 7.1* Discrete A true High Denition audio codec,
where the audio is bit-for-bit identical
to the high resolution studio master,
supporting sample rates up to 192
kHz per channel. Similar to Dolby
Digital Plus, the track contains a 5.1
code for backward compatibility.