Denon AVR-1802/882 User Manual Page 45

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45
ENGLISH
2 Dolby Digital and Dolby Pro Logic
Comparison of home surround systems
No. recorded channels (elements)
No. playback channels
Playback channels (max.)
Audio processing
High frequency playback limit of surround
channel
Dolby Digital
5.1 ch
5.1 ch
L, R, C, SL, SR, SW
Digital discrete processing Dolby Digital (AC-3) encoding/decoding
20 kHz
Dolby Pro Logic
2 ch
4 ch
L, R, C, S (SW - recommended)
Analog matrix processing Dolby Surround
7 kHz
2 Dolby Digital compatible media and playback methods
Marks indicating Dolby Digital compatibility: and .
The following are general examples. Also refer to the players operating instructions.
Media
LD (VDP)
DVD
Others
(satellite broadcasts, CATV, etc.)
Dolby Digital output jacks
Coaxial Dolby Digital RF output jack
1
Optical or coaxial digital output
(same as for PCM)
2
Optical or coaxial digital output
(same as for PCM)
Playback method (reference page)
Set the input mode to AUTO.
(Page 26)
Set the input mode to AUTO.
(Page 26)
Set the input mode to AUTO.
(Page 26)
1 Please use a commercially available adapter when connecting the Dolby Digital RF (AC-3RF) output jack of the LD player to the digital input
jack.
Please refer to the instruction manual of the adapter when making connection.
2 Some DVD digital outputs have the function of switching the Dolby Digital signal output method between bit stream and (convert to)
PCM. When playing in Dolby Digital surround on this unit, switch the DVD players output mode to bit stream. In some cases players
are equipped with both bit stream + PCM and PCM only digital outputs. In this case connect the bit stream + PCM jacks to this
unit.
(2) Dolby Pro Logic II
Dolby Pro-Logic II is a new multi-channel playback format developed by Dolby Laboratories using feedback logic steering technology and
offering improvements over conventional Dolby Pro Logic circuits.
Dolby Pro Logic II can be used to decode not only sources recorded in Dolby Surround ( ) but also regular stereo sources into five channels
(front left, front right, center, surround left and surround right) to achieve surround sound.
Whereas with conventional Dolby Pro Logic the surround channel playback frequency band was limited, Dolby Pro Logic II offers a wider
band range (20 Hz to 20 kHz or greater). In addition, the surround channels were monaural (the surround left and right channels were the
same) with previous Dolby Pro Logic, but Dolby Pro Logic II they are played as stereo signals.
Various parameters can be set according to the type of source and the contents, so it is possible to achieve optimum decoding (see page
30).
Sources recorded in Dolby Surround
These are sources in which three or more channels of surround have been recorded as two channels of signals using Dolby Surround
encoding technology.
Dolby Surround is used for the sound tracks of movies recorded on DVDs, LDs and video cassettes to be played on stereo VCRs, as well
as for the stereo broadcast signals of FM radio, TV, satellite broadcasts and cable TV.
Decoding these signals with Dolby Pro Logic makes it possible to achieve multi-channel surround playback. The signals can also be played
on ordinary stereo equipment, in which case they provide normal stereo sound.
There are two types of DVD Dolby surround recording signals.
q 2-channel PCM stereo signals
w 2-channel Dolby Digital signals
When either of these signals is input to the AVR-1802, the surround mode is automatically set to Dolby Pro Logic II when the DOLBY/DTS
SURROUND mode is selected.
2 Sources recorded in Dolby Surround are indicated with the logo mark shown below.
Dolby Surround support mark:
Manufactured under license from Dolby Laboratories.
Dolby, Pro Logic and the double-D symbol are trademarks of Dolby Laboratories.
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