3-30
Algorithms and Parameters
Lexicon
RESONANCE
In the Resonant Chord algorithms: Res1>Plate and Res2>Plate, this
row contains high cut filter and resonance controls for each voice,
as well as master high cut and resonance controls for all voices.
Mstr Res,Mstr HC
Position 0 of the Resonance row contains two master parameters
for the six resonator voices: Mstr Res and Mstr HC. (Press Load/✱
to toggle between them.) Mstr Res is a master resonance control
for all of the resonator voices. It allows the resonance settings for
all voices to be scaled over a range of 0-100%. Use care when
adjusting this value. The resonators will put out high levels if the
input source has any components that are close in pitch to the
resonator tunings. The Mstr HC control allows the high cut filter
settings for all voices to be scaled over a range of 0-100%.
V1Res,V1 HiCut-V6 Res,V6 HiCut
TheV1-V6 Res controls set the amount and polarity of feedback for
each voice. The HiCut controls set the high frequency cutoff
frequency of the 6dB per octave low pass filter for each voice.
RVB DESIGN
The Reverb Design row, available in every algorithm, contains
parameters that affect the structural aspects of the reverb effect.
Size
Size sets the rate of diffusion build-up after the initial period (which
is controlled by Diffusion). Size changes a reverb sound from very
large to very small. Generally, set this control to the approximate
size of the acoustic space being created, before adjusting anything
else. The size in meters is roughly equal to the longest dimension
of the space. Audio is temporarily muted when Size is changed.
Duration
In the Inverse algorithm, Duration determines the length of time,
in milliseconds, which passes before the cutoff in Inverse effects.
Attack
Attack is provided in the Plate algorithm to set the sharpness of the
initial response to an input signal. High settings cause an explosive
sound, while low settings cause the sound to build up more
slowly with time. Attack only affects the level of sound within the
first 50 milliseconds.
Diffusion
A Diffusion control is provided in all algorithms. It controls the
degree to which initial echo density increases over time. High
settings of Diffusion result in initial build-up of echo density, and
low settings cause low initial build-up. Echo density is also affected
by Size; smaller spaces will sound denser. To enhance percussion,
use high settings of Diffusion. For clearer and more natural vocals,
mixes, and piano music, use low or moderate settings of Diffusion.
Shape, Spread
In the Chamber and Infinite algorithms, Shape and Spread work
together to control the overall ambience of the reverb. Shape
determines the contour of the reverb envelope. With Shape all the
way down, reverb builds explosively, and decays quickly. As Shape
is advanced, reverb builds up more slowly and sustains for the time
set by Spread. With Shape in the middle, the build-up and sustain
of the reverb envelope emulates a large concert hall (assuming that
Spread is at least halfway up, and that Size is suitably large — 30
meters or more). Low Spread settings result in a rapid onset of
reverb at the beginning of the envelope, with little or no sustain.
Higher settings spread out both buildup and sustain. In the Inverse
algorithm, Spread is fixed, and only a Shape control is available.
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