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Additional Information
HDCD
®
(High Definition Compatible Digital
®
)
HDCD is an encoding/decoding technology that greatly reduces
the distortion that occurs upon digital recording while
maintaining compatibility with the conventional CD format, thus
expanding the dynamic range and achieving a high resolution.
Conventional CDs and HDCD compatible CDs are identified
automatically to select the optimum digital processing.
• ®, HDCD®, High Definition Compatible Digital® and
Microsoft® are either registered trademarks or trademarks
of Microsoft Corporation, Inc. in the United States and/or
other countries. HDCD system manufactured under license
from Microsoft Corporation, Inc. This product is covered by
one or more of the following: In the USA: 5,479,168,
5,638,074, 5,640,161, 5,808,574, 5,838,274, 5,854,600,
5,864,311, 5,872,531, and in Australia: 669114. Other
patents pending.
2 THX™ Surround EX™
In 1999, a new surround system was launched
simultaneously with the release of the movie “Star Wars
Episode I”. “Dolby Digital Surround EX” is a new movie
sound track that greatly enhances the sense of spatial
expression and the positioning of the surround channel
sound. The result is 360 degrees of movement and moving
sound effects that seem to pass right over the listener’s head.
This system was developed jointly by THX and Dolby
Laboratories, fusing THX’s idea of improving spatial
expression and achieving a uniform 360 degree sound
positioning with Dolby Laboratories’ matrix encoding
technology. Emphasis was placed on compatibility with the
existing system Dolby Digital 5.1 channel, and the new
“surround back (SB) channel” was added to achieve
improvements over the conventional 5.1 channel system in
terms of the positioning of the sound at the rear, the
acoustic image of sound moving from the two sides to the
back as well as sound moving from the front to the center
rear with the multi surround speaker systems used in movie
theaters, thereby enabling various types of surround sound.
The surround back channel signal is a matrix-encoded signal
inserted into both the Dolby Digital SL (surround left) and
SR (surround right) channels. Upon playback, the signals
are decoded by a high precision digital matrix decoder
within the Dolby Digital decoder into the SL, SR and SB
channels and output as 6.1 channels of signals. With the
AVR-5805CI, the signals further undergo Home THX
Cinema processing to achieve a THX Surround EX system.
Even without the proper environment for playing the SB
channel, Dolby Digital Surround EX signals are 100%
compatible with existing 5.1 channel playback systems, so
they can be played as such. In this case, the SB channel
signal is produced as a monaural signal from both the SL
and SR channels, so none of the signal components are
missing. The effects specific to THX Surround EX (the
sense of spatial expression and the positioning of the
sound), however, are the same as with conventional 5.1
channel surround systems.
THX and Ultra2 are trademarks of THX Ltd. THX may be
registered in some jurisdictions. All rights reserved. Surround
EX is a trademark of Dolby Laboratories. Used with permission.
Audyssey MultEQ XT
Audyssey MultEQ XT is a technology designed to provide the
optimum listening environment for multiple listeners within the
listening area. Test data collected from multiple listening points
is analyzed comprehensively and equalization that improves the
sound quality for the entire listening area is performed.
Audyssey MultEQ XT not only corrects frequency response
problems in large listening areas, it also fully automates the
surround system setup.
For a detailed description, see page 20.
• Audyssey MultEQ XT is a trademark of Audyssey
Laboratories. It is licensed under US and National Patent
Applications 20030235318 and 10/700,220. Additional U.S.
and Foreign Patents pending. MultEQ and the Audyssey
MultEQ logo are trademarks of Audyssey Laboratories, Inc..
All rights reserved.
About IEEE1394
IEEE1394 is an international standard established by the
“IEEE” (Institute of Electrical and Electronics Engineers) of
the United States.
The AVR-5805CI can be connected to an IEEE1394 compatible
device using an IEEE1394 cable to enable digital transfer of
multi-channel audio sources (DVD Audio discs, Super Audio
CDs, etc.) with a single cable.
• The AVR-5805CI’s transfer format is compatible with A&M
protocol.
In addition to A&M protocol, IEEE1394 transfer formats also
include MPEG-TS, DV, etc.
• The AVR-5805CI is compatible with a data transfer speed of
up to S400.
The IEEE1394 maximum data transfer speeds are defined
as approximately 100, 200 or 400 Mbps, expressed
respectively as S100, S200 and S400. When S100 or S200
devices are connected, the actually transfer rate may be
slower than 400 Mbps, depending on the device’s
specifications. As far as possible, interconnect devices with
the same maximum data transfer rate.
• The AVR-5805CI is compatible with the DTCP (Digital
Transmission Content Protection) system.
2
Copyright protection system
In order to play the sound of DVD Audio discs, Super Audio
CDs or DVDs (aside from freely copiable discs) using
IEEE1394 connections, both the player and receiver must
be compatible with the DTCP (Digital Transmission
Content Protection) system.
DTCP is a copy protection technology that involves data
encryption and authentication of the other device. Refer to
your player’s operating instructions.