Classe Audio Surround Sound Processor SSP-800 - Manual (Page 30)

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Dolby Digital
Plus 1.0 - 7.1+ Discrete Audio codec which allows for higher
bitrates, 7.1 channels or more
(currently limited by HD DVD,
Blu-ray disc™ standards), while still
remaining compatible with older
5.1 systems. Th
e codec was designed
based on Dolby Digital but provides
the necessary versatility going into the
future.
Dolby TrueHD 1.0 - 7.1+ Discrete Th is is a true next-generation
surround mode where the audio
is bit-for-bit identical to the high-
resolution studio master audio.
Similarly to Dolby Digital Plus
the track contains a 5.1 core for
backwards compatibility.
DTS-HD
Master Audio 5.1 - 7.1 Discrete Th is is a bit-for-bit identical copy
of the studio master track on your
media, and therefore produces the
best possible reproduction. Master
Audio still contains the DTS core to
remain backwards compatible with
older DTS systems.
DTS-HD
High Resolution
Audio 5.1 - 7.1 Discrete Th is is used when there is not
enough space on the disc to hold the
complete Master Audio track. Th
ough
not a bit-for-bit representation, High
Resolution Audio provides increased
bitrates while still providing the DTS
core for backwards compatibility with
older systems.
post-processing Th e fi rst thing the SSP-800 Surround Sound Processor does is recover the
various channels delivered by your source with accuracy and fi delity. Th is might
be a single-channel mono signal, a Dolby Digital Surround EX soundtrack with
6.1 channels, or anything in between. Th
e signal may have been delivered via
satellite receiver, cable set-top box, DVD, or even downloaded from the Internet.
Once the SSP-800 has decoded the selected signal, you can then choose to send
it to the output unchanged, or you can add further processing, often called post-
processing. Th
is kind of processing is particularly useful for utilizing additional
surround speakers with limited audio track sources. For instance, processing a
2-channel stereo source with Dolby Pro Logic IIx generates a 7.1-channel output
so that you can enjoy the audio source in full surround sound.