User Guide

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ENGLISH
Contentsn
Getting Started
Part Names and Functions ···························································2
Remote Control Unit ·····································································2
Connections
Installing / Setting the Speakers ·················································3
Speaker Connections ····································································4
Settings
GUI Menu Map ··············································································5
Make the Optimal Speaker Settings, and Correct the Room
Acoustics (Audyssey™ Auto Setup) ············································6
Making Detailed Settings (Manual Setup)··································8
Playback
Adjusting the Sound and Picture Quality
(Audio/Video Adjust) ··································································11
Adjusting the Sound (Audio Adjust) ············································ 11
Other Information
Additional functions
• Addition of Audyssey DSX™
(Dynamic Surround Expansion™)
Audyssey Dynamic Surround Expansion™ (DSX)
Realistic reproduction of sound relies on the ability of audio systems
to match human hearing performance. Three key requirements are:
(i) frequency response; (2) dynamic range; and (3) accurate spatial
reproduction. The requirements for frequency response have already
been surpassed with sampling rates that exceed human hearing. The
dynamic range limits of human perception have also been met with
current digital audio systems operating capable of signal to noise ratios
that approach 120 dB. Accurate spatial sound rendering, however, has
not yet reached the limits of perception as human perception relies
on the combination of sounds arriving from many more directions
than what 5.1 surround sound systems provide. Audyssey DSX™
technology was developed to overcome the spatial sound rendering
limitations faced by 5.1 surround sound formats.
The ITU 5.1 channel standard recommends three front loudspeakers
and two rear loudspeakers. The Left (L) and Right (R) front loudspeakers
should be placed at ±30° relative to the central listening position. The
Center (C) loudspeaker should be at 0° and the surround loudspeakers
(SL, SR) should be placed between 100° and 120°. All loudspeakers
must be equidistant from the center listening position or compensated
with time delay if that is not possible. A separate lowfrequency effects
(LFE) channel is used to reproduce additional bass content from the
subwoofer.
There are certain things that 5.1 surround sound systems do well
compared to 2-channel stereo. For example, it is possible to move
sounds across the front seamlessly. It is also possible to create
ambience behind the listener. But 5.1 channel surround systems do not
provide enough channels from which to render the required reflected
sound components for a seamless and enveloping soundstage.
Unfortunately, the additional two back surround channels in 7.1
systems are not in the right place to provide a significant perceptual
improvement.
Adding more channels to a surround system is not for special effects.
Accurate spatial sound reproduction requires rendering of directional
sound cues and non-directional ambient cues. Reflections arriving after
the direct sound play a critical role in the perception of soundstage
width and depth. To have the most impact, additional surround channels
should be used to control the direction, time of arrival, and frequency
response of the reflected sound to render an expanded soundstage
that reproduces sound with better localization and envelopment than
what 5.1 systems provide.
n
Manufactured under license from Audyssey Laboratories™. U.S.
and foreign patents pending. Audyssey MultEQ
®
is a registered
trademark of Audyssey Laboratories. Audyssey Dynamic EQ
®
is a
registered trademark of Audyssey Laboratories. Audyssey Dynamic
Volume™ is a trademark of Audyssey Laboratories. Audyssey
Dynamic Surround Expansion™ is a trademark of Audyssey
Laboratories.
NOTE
When upgrading, the RS-232C connector cannot be used for the
DENON RF remote controller.
For details, see “Unavailable Functions After Upgrading” on page
19.
Unavailable Functions After Upgrading···················19
Surround ······················································································17
Surround Modes and Parameters ··············································· 17
Research in the perception of auditory source width has shown that
there are strong preferences in the direction of reflected sound and
the perception of soundstage width and spaciousness. The single
most important direction of side-wall reflections is ±60°. Audyssey
DSX provides a pair of Wide channels (LW and RW) at ±60° with
appropriate frequency response and perceptual processing to match
the requirements of human hearing. In fact, the Wide channels are
much more critical in the presentation of a realistic soundstage than
then Back Surround channels found in traditional 7.1 systems. A more
enveloping 7.1 channel system is one in which Wide speakers are
used instead of Back Surround speakers. Adding surround channels
behind the listener has a very small impact compared to the increase
in envelopment and soundstage width that the front wide channels
will provide.
After side reflections, the next most important acoustical and perceptual
cues come from reflections above the front stage. Audyssey DSX
provides a pair of Height channels (LH and RH) at a ±45° azimuth angle
and elevated to a 45° angle in the median plane.
In addition to creating new Wide and Height channels, Audyssey
DSX also provides Surround Processing to enhance the envelopment
of the Surround and Back Surround channels (if present). Audyssey
DSX Surround Processing processes the standard surround signals in
the time and frequency domains to improve the perceived sense of
envelopment and blending with the other speakers in the surround
system.
Audyssey Dynamic Surround Expansion is a scalable system that can
adapt to the practical needs of the user. The first level of surround stage
enhancement comes from adding the Wide channels. The second
level comes from adding the Height channels. If it is practical to have
both Wides and Heights then the surround performance will be further
enhanced. Audyssey DSX automatically reconfigures its processing to
optimize surround rendering over any number of available speakers
beyond 5.1.
Specifications ········································································20