Classe Audio SSP-800/CT-SSP owner manual Post-processing, Dolby TrueHD

post-processing

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Dolby Digital	1.0 - 7.1+	Discrete	Audio codec which allows for higher
Plus			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	5.1 - 7.1	Discrete	This is the DTS flavour of a bit-for-
Master Audio			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	5.1 - 7.1	Discrete	This is used when there is not enough
High Resolution			space on the disc to hold the complete
Audio			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.
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.