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AVR<br />
Appendix<br />
Table A8 – Surround Modes<br />
Surround Mode Description Incoming Bitstream or Signal<br />
Dolby Digital<br />
Dolby Digital EX<br />
Dolby Digital Plus<br />
Dolby TrueHD<br />
Provides up to five separate main audio channels and a dedicated low-frequency<br />
effects (LFE) channel.<br />
An expansion of Dolby Digital 5.1 that adds a surround back channel that may be<br />
played through one or two surround back speakers. May be manually selected when<br />
a non-EX Dolby Digital stream is detected.<br />
An enhanced version of Dolby Digital encoded more efficiently, Dolby Digital Plus<br />
has the capacity for additional discrete channels and for streaming audio from the<br />
Internet, all with enhanced audio quality. Source material may be delivered via an<br />
HDMI connection or decoded to Dolby Digital or PCM and transmitted via coaxial or<br />
optical digital audio.<br />
Dolby TrueHD is an expansion of MLP Lossless audio, the same format used on<br />
DVD-Audio discs. Dolby TrueHD adds the features found in Dolby Digital, such as<br />
night mode settings, while delivering fully lossless audio that is a true reproduction<br />
of studio master recordings.<br />
<br />
2/1/.0 or .1, 2/2/.0 or .1, 3/2/.0 or .1<br />
<br />
<br />
connection<br />
<br />
<br />
<br />
Dolby Digital when a coaxial or optical connection is used)<br />
<br />
HDMI<br />
Dolby Digital Stereo Delivers a two-channel downmix of Dolby Digital materials. <br />
2/1/.0 or .1, 2/2/.0 or .1, 3/2/.0 or .1<br />
<br />
Dolby Pro Logic II Mode<br />
Group<br />
Analog decoder that derives five full-range, discrete main audio channels from matrix<br />
surround-encoded or two-channel analog sources. Four variants are available.<br />
See below<br />
Dolby Pro Logic II Movie Variant of Dolby Pro Logic II that is optimized for movie and television programs. <br />
<br />
<br />
<br />
Dolby Pro Logic II Music<br />
Dolby Pro Logic<br />
Dolby Pro Logic II Game<br />
Variant of Dolby Pro Logic II that is optimized for music selections. Allows adjustment<br />
of sound-field presentation in three dimensions:<br />
<br />
<br />
<br />
Variant of Dolby Pro Logic II that emphasizes use of the surround channels and<br />
subwoofer for total immersion in the video gaming experience.<br />
Original version of Dolby Pro Logic that steered a mono signal containing information<br />
below 7kHz to the surround channels.<br />
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