Denon AVR-3600 User Manual download pdf (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

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

<X>

CD O

O O

O CD

^6'

......

DJMJJÉP OfiiiCTiiirsN

O O O

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.

CH VOL

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TUrt'Wi

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iol

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Denon AVR-3600 User Manual Page 27

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