Classe Audio SSP-800/CT-SSP User Manual

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. The codec was designed

based on Dolby Digital but provides

the necessary versatility going into the

future.

Dolby TrueHD

1.0 - 7.1+

Discrete

This 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

This is the DTS flavour of a bit-for-

bit identical copy of the studio master

track on your media, and therefore

delivers the best possible resolution.

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

This is used when there is not enough

space on the disc to hold the complete

Master Audio track. Though not

a bit-for-bit representation, High

Resolution Audio provides increased

bitrates while still providing the DTS

core for backwards compatibility with

older systems.

LPCM

2.0 - 7.1

Discrete

This uncompressed digital

representation of analog audio was

initially developed as the Redbook

standard format for stereo CD audio

and DVD-A 5.1 multichannel audio.

Depending on the source material,

this high resolution format is capable

of outputting sample rate resolutions

of up to 24 bit/192kHz.

post-processing

The first thing the SSP Surround Sound Processor does is recover the various

channels delivered by your source with accuracy and fidelity. This might be a

single-channel mono signal, a Dolby True HD soundtrack with 7.1 channels, or

anything in between. The signal may have been delivered via satellite receiver,

cable set-top box, DVD, or even downloaded from the Internet.

Once the SSP 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. This 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.