Lexicon DC-1 User Manual download pdf (Page 49)

DC-1 Digital Controller

DC-1Effects

Parameter Initial Value Range

AUTO AZIMUTH ON ON/OFF

SURROUND MODE DECORR STEREO, DECORR

RE-EQUALIZER ON ON/OFF

SUBWOOFER LVL +0dB -5 to +5dB

CUSTOM

This Effect, available only in DC-1’s equipped with THX or Dolby Digital

processing, provides Home THX Cinema surround decoding for any Dolby

surround encoded movies, music or television programs. The effect is

similar to Pro Logic, but includes the features of re-equalization, timbre

matching and decorrelation. The surround channels are monaural, but can

be decorrelated. This effect can be reset to use the Logic 7 stereo surrounds

with the Stereophonic setting of Surround Mode, although full separation

between the sides and the rear speakers is not available.

THX Cinema

(THX and Dolby

Digital versions)

THX Cinema Parameters

AUTO AZIMUTH is short for auto azimuth error correction/automatic

input balance. Auto Azimuth should be set to ON for films, and OFF for

music. When ON, special patented algorithms continually monitor the

input signal and adjust both the relative level and time offset of the two

channels to keep the dialog properly centered and special effects properly

localized. This automatic feature is the reason the unit does not need an

input balance control for Dolby Surround decoding.

SURROUND MODE selects the type of surround decoding used by the

DC-1. STEREOPHONIC provides extraction of five channels of surround

information from a standard 4-2-4 matrix-encoded soundtrack (Dolby

Surround, Ultra*Stereo, etc.) The drama of this effect is dependent on the

source material and is most noticeable with strong stereo music soundtracks.

The DECORRELATED setting electronically scrambles the monaural sur-

round channel to provide added spaciousness and envelopment.

RE-EQUALIZER equalizes the left, center, and right channel outputs to

match the overall frequency balance of the original recording. Without this

re-equalization, many films and some television programs will sound too

bright.

SUBWOOFER LVL boosts or cuts the subwoofer output level. Although the

normal subwoofer level is set during the calibration procedure, with some

recordings it may be desirable to increase or decrease this deep bass level.

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Lexicon DC-1 User Manual Page 49