Denon AVR-3600 - Manual (Page 27)

2. DOLBY DIGITAL AC-3
When you connect an ID player with an AC~3 RF output and play laserdiscs
with the mark, you can experience improved sound
AC'S O t (li t T A L
spatiality, positioning, and impact compared with Pro Logic. This is because
Dolby Digital AC-3 delivers up to 5 totally discrete, full frequency audio chan­
nels (front left and right, center, and surround left and right), plus a bass-only
effects channel. Since the signal is digital from the input of the program
source until to the output of this unit, a higher quality and clarity of surround
sound results.
Dolby Digital AC-3 (Auto Coding 3) is a system developed by Dolby Laborato­
ries that transmits 5.1 channels of digital signals. The surround system de­
veloped for movie theaters using this system is called "Dolby SR-D (Sur­
round Digital)", Whereas the conventional Doiby Pro Logic Surround is an
analog matrix system, Dolby SR-D is a digital discrete system in which the
different channels are completely independent. This makes it possible to
achieve a realistic sound field with a "three-dimensional" feel, giving the
sound a sense of distance, movement and relative position, and creating a
surprisingly real and powerful sense of presence when playing movie soft­
ware in AV rooms.
There are" 5.1 ch" playback channels; three front channels (front left, center
and front right), two surround channels (surround left and surround right),
plus "0.1 channel" called LFE (Low Frequency Effect) for low bass effect
sounds of 120 Hz or less. The signals are recorded on the software in fully
discrete fashion, eliminating crosstalk between channels and making it pos­
sible to control the sound field in the listening/viewing space with greater
precision.
In addition, the frequency range of the five channels extends up to 20 kHz,
(the same as CDs,) resulting in clear sound with greater richness of expres­
sion. Also, Dolby Digital AC-3 will be used on DVDs, the next generation AV
medium.
Dolby Digital AC-3 and Pro Logic
Home surtound methods Ootby Digital AC-3 Dolby Pro Logic
No. teeofdirtg channels imeioriall 5,1 ch 2ch
No. playback channels 5,1 ch Ach
Playback channels L K C. SL, SR and SW L, R, C, S (SW tecomniendedi
Audio processing Oigital discrete processing. AC~3
encoding / decoding Analog matrix processing, Dolby
SurrooDci
Upper reprodtioiion lim i! of
surround channel 20kHK 7kHit
Manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby," "AC-3'', "Pro Logic" and the double-D symbol are trademarks of Dolby Laboratories
Licensing Corporation, Copyright 1992 Dolby Laboratories, Inc, All rights reserved.
9”2 Before playing with the surround function
Before playing with the surround function, be sure to use the test tones to adjust the playback level from the different speakers. This adjustment'
can be performed with the system setup (see page 13, 14) or from the remote control unit, as described below.
Adjusting with the remote control unit using the test tones is only possible in the "Auto" mode and only effective in the Dolby Surround mode. The
adjusted levels are automatically stored in the memory.
1, Press the test tone button.
T.TONE
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3. After completing the adjustment, press the test tone button again.
T.TONE
2, Test tones are output from the different
speakers. Use the channel volume adjust chvol
buttons to adjust so that the volume of the ( v )
test tones is the same for all the speakers.
After adjusting using the test tones, adjust the channel levels either according to the playback sources or to suit your tastes, as described below.
1. Press the channel select button to select the speaker to be ad­
justed.
CH seiECT
2, Adjust the level of the selected speaker.
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