Lexicon Digital Controller DC-1 - Manual (Page 60)

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Lexicon
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.