ENGLISH
AVR
Appendix
Surround Mode Description Incoming Bitstream or Signal
Dolby Digital Provides up to five separate main audio channels and a dedicated low-frequency
effects (LFE) channel.
•DolbyDigital1/0/.0or.1,2/0/.0or.1,3/0/.0or.1,
2/1/.0 or .1, 2/2/.0 or .1, 3/2/.0 or .1
•DolbyDigitalEX(playedas5.1)
•DolbyDigitalPlusdecodedanddeliveredviacoaxialoroptical
connection
Dolby Digital EX An expansion of Dolby Digital 5.1 that adds a surround back channel that may be
played through one or two surround back speakers. May be manually selected when a
non-EX Dolby Digital stream is detected.
•DolbyDigitalEX
•DolbyDigital2/2/.0or.1,3/2/.0or.1
Dolby Digital Plus An enhanced version of Dolby Digital encoded more efficiently, Dolby Digital Plus has
the capacity for additional discrete channels and for streaming audio from the Internet,
all with enhanced audio quality. Source material may be delivered via an HDMI
connection or decoded to Dolby Digital or PCM and transmitted via coaxial or optical
digital audio.
•DolbyDigitalPlusviaHDMIconnection(sourcedevicedecodesto
Dolby Digital when a coaxial or optical connection is used)
Dolby TrueHD Dolby TrueHD is an expansion of MLP Lossless
™
audio, the same format used on
DVD-Audio discs. Dolby TrueHD adds the features found in Dolby Digital, such as night
mode settings, while delivering fully lossless audio that is a true reproduction
of studio master recordings.
•Blu-rayDiscorHD-DVDencodedwithDolbyTrueHD,deliveredvia
HDMI
Dolby Digital Stereo Delivers a two-channel downmix of Dolby Digital materials. •DolbyDigital1/0/.0or.1,2/0/.0or.1,3/0/.0or.1,
2/1/.0 or .1, 2/2/.0 or .1, 3/2/.0 or .1
•DolbyDigitalEX
Dolby Pro Logic II Mode
Group
Analog decoder that derives five full-range, discrete main audio channels from matrix
surround-encoded or two-channel analog sources. Four variants are available.
See below
Dolby Pro Logic II Movie Variant of Dolby Pro Logic II that is optimized for movie and television programs. •DolbyDigital2.0or2.1
•Analog(two-channel)
•Tuner
•PCM(32kHz,44.1kHz,48kHz,96kHz)
Dolby Pro Logic II Music Variant of Dolby Pro Logic II that is optimized for music selections. Allows adjustment
of sound-field presentation in three dimensions:
•CenterWidth(adjustswidthofvocalsoundstage)
•Dimension(adjustsdepthofsoundstage)
•Panorama(adjustswraparoundsurroundeffect)
•DolbyDigital2.0or2.1
•Analog(two-channel)
•Tuner
•PCM(32kHz,44.1kHz,48kHz,96kHz)
Dolby Pro Logic Variant of Dolby Pro Logic II that emphasizes use of the surround channels and
subwoofer for total immersion in the video gaming experience.
•DolbyDigital2.0or2.1
•Analog(two-channel)
•Tuner
•PCM(32kHz,44.1kHz,48kHz,96kHz)
Dolby Pro Logic II Game Original version of Dolby Pro Logic that steered a mono signal containing information
below 7kHz to the surround channels.
•DolbyDigital2.0or2.1
•Analog(two-channel)
•Tuner
•PCM(32kHz,44.1kHz,48kHz,96kHz)
Dolby Pro Logic IIx Mode
Group
(AVR 1710/
AVR 171 only)
An expansion of Dolby Pro Logic II that adds a surround back channel which may
be played through one or two surround back speakers. The Dolby Pro Logic IIx modes
may be selected not only with Dolby Digital bitstreams, but thanks to the AVR’s post-
processor, they may also be used with some DTS bitstreams to add a surround back
channel to 5.1 modes.
See below
Table A10 – Surround Modes
41
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Audio Specifications
