Lexicon DC-1 User Manual download pdf (Page 60)

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DC-1 Effects

CENTER LEVEL adjusts the output level from the center speaker.

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.

EFFECT LEVEL adjusts the loudness of the Effect.

Parameter Initial Value Range

MID RT 3.90 sec 1.14-17.04 sec

BASS RT 4.87 sec 0.7, 1.0, 1.25xMID RT

HALL SIZE 38 Meters 20-38 Meters

PRE-DELAY 40ms 0-88ms

ROLLOFF 2.6kHz 453Hz-20.0kHz

SPEECH DETECT ON ON/OFF

CENTER LEVEL 7 0-15

SUBWOOFER LVL +0dB -5 to +5dB

EFFECT LEVEL -01dB -30 to +05dB

CUSTOM

MID RT (midrange reverberation time) is the time required for midrange

sounds to decay 60dB in level.

BASS RT (low frequency reverberation time) depends on MID RT and is

expressed as a multiplier. BASS RT should be set to 1.0 x MID RT for a more

natural effect in smaller spaces.

HALL SIZE allows you to select hall sizes of lengths ranging from 20-38

meters (in increments of 2 meters).

PRE-DELAY increases the delay between the direct sound and the onset of

reverberation. Because some pre-delay is inherent in the program material,

a value of 0 is usually a good starting point. Increasing the pre-delay value

will make the hall sound larger.

ROLLOFF mimics the absorption of the air in the hall and, typically, should

begin with a low frequency when simulating larger spaces.

SPEECH DETECT activates a circuit that distinguishes monaural speech

from other inputs. Essentially, this control turns down the effect to make

speech clearer. Whenever stereo signals are present, the right and left input

channels are used independently as inputs to the ambience synthesis.

Cathedral Parameters

Cathedral

The Cathedral Effect uses a reverberation algorithm which emphasizes

rich, smooth reverberant decay in large spaces. As its name indicates, it

works well for simulating a space with a long reverberation time relative to

its size, such as a cathedral.

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Lexicon DC-1 User Manual Page 60