Lexicon PCM92, Owner'S Manual

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Master Reflection Delay (Reflection Time Master)
Controls all reflection delays in the algorithm. Each reflection delay voice
has its nominal delay time adjusted by this percentage.
MidRT
MidRT is the mid frequency reverb time. As such, it is one of the primary
controls affecting the length of the reverb tail. At low values, it models a
space with absorbent walls—a signal won’t bounce many times before it dis-
sipates. At high values, the walls are flat and extremely reflective. A signal
lives a long time before dying away.
The parameter most closely associated with MidRT is Size. A large room size
with a small MidRT can easily have the same decay time as a small room
with a large MidRT. The value that is actually displayed is an approximate
reverb time based on both of those values.
Mix (Wet Dry Mix)
Mix is the proportion of wet (processed) signal to dry (unprocessed) signal.
Output Level
Output Level controls the amount of post-mix signal emitted onto a channel
of output.
Pan
Routes the post-filter delay voice across the left-right soundstage.
Pattern
Selects a space available in the selected Category (see Category parameter).
Reflection Delay (Delay Time)
A reflection delay is a delay tap taken from one of the inputs and sent to one
of the outputs. It is often called a delay voice. Depending on the algorithm,
there may be one or more reflection delays for each input channel. Some of
the delays may mix their outputs to the same channel (left to left) and some
may go cross-channel (left to right).
Reflection Gain (Level)
Each Reflection Delay voice also has a gain value. This gain is controlled by
the Reflection Gain parameter.
Resonance
This parameter determines at which frequency the delay voice resonates.
Resonance Detune Master
Controls detuning of all voices in the algorithm. Each voice has its nominal
detune. adjusted by this percentage. Includes a built-in ducker that attenu-
ates the delay output whenever signal is present at the input. This can be
used to keep the original signal from being muddied up by delay repeats.
Resonance Filter Master
Controls all voices in the algorithm. Each voice’s resonator has its nominal
cutoff frequency adjusted by this percentage.