Cycloid - Lexicon VORTEX User Manual

Fbk 1
STEREO
FILTER
Fbk 1
Rate 1, Rate 2
Depth 1, Depth 2
Res 1*, Res 2*
* ENVELOPE Raises filter cutoff frequency
ECHO FX LVL Delayed filter output level
MOD FX LVL Undelayed filter output level
FEEDBACK 1 Total gain of feedback mix for both delays
FEEDBACK 2 Feedback/cross-feed mix
RATE 1 Filter glide rate
DEPTH 1 Filter glide depth
RESONANCE 1 Left filter cutoff frequency
RATE 2 Rate of RATE 1 FM
DEPTH 2 Depth of RATE 1 FM
RESONANCE 2 Right filter cutoff frequency
Mod Fx Lvl
ECHO 1
Fbk 2
Echo
Fx Lvl
Fbk 2
ECHO 2
Mod Fx Lvl
Cycloid A utilizes a dynamic stereo low-pass filter that pro-
duces different spatial effects by cyclic changes in the tone of
left and right signals.
ENVELOPE raises the filter cutoff frequency, so that loud sounds
are initially bright, then grow darker as they fade. The filter cutoff
frequency is also controlled by DEPTH 1 and by both resonance
controls. The interaction of these parameters with the ENVELOPE
control produces many interesting dynamic effects. The filter is
2
modulated by a sine wave form (left and right are modulated 90 out
of phase with respect to each other) to produce "filter panning,"
where the sound moves from left to right based on tone rather than
level. RATE 1 and DEPTH 1 control the speed and amount of filter
modulation. The rate of this modulation can itself be modulated by
RATE 2 and DEPTH 2 (FM).
Placing the echoes behind the filter gives control over the tone
color of the signal going into the echoes. (Each echo repeat has the
same degree of darkness.)
The Preset creates a swirling, left-right motion by modulating the
filter with RATE 1 and DEPTH 1. The speed of this motion is subtly
varied by RATE 2 and DEPTH 2. ENVELOPE control is used to
decrease the motion on louder signals. Left and right eighth-note,
triplet, and sixteenth-note echoes increase the apparent "width" of
the sound.
52
A

14 CYCLOID