Fractal Audio FX8 - Internal Controllers

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10 : MODIFIERS
INTERNAL CONTROLLERS
LFO1 + LFO2
An LFO, or Low Frequency Oscillator,
generates control signals in the form
of a variety of familiar wave shapes or random
signals. Familiar examples of LFOs in action
include the pulsing of a tremolo, the steady back
and forth sweep of a phaser.
TYPE sets the waveform or shape. You can set
a RATE or lock the LFO to the current TEMPO.
You can vary the overall DEPTH and DUTY, or
symmetry.
Each LFO outputs two signals, “A” and “B” and
so appears twice in the list of sources. You can
change the
OUT B PHASE.
The
RUN parameter starts and stops the LFO. This
can be used to keep it from drifting over time.
QUANTIZE changes smooth waveforms into
segmented ones. Try it on the “TRI” waveform for a
“stepped” eect.
SEQUENCER
The FX8 step-sequencer generates
control patterns by looping through
2–32 “stages.” You set the VALUE for each stage,
the NUMBER of stages, and the RATE or TEMPO.
The RUN switch allows you to start or stop the
sequence.
SCENE CONTROLLERS
Scene controllers provide a uniquely
powerful way to change certain sound
settings from one scene to another. These two
“virtual knobs” can be programmed individually
for each SCENE in each preset. For example, you
might assign SCENE CONTROLLER 1 to delay
feedback, with a value of 10% in SCENE 1, 30%
in SCENE 2, 5% in SCENE 3, and so on. SCENE
CTRL 2 could meanwhile be used for something
completely dierent.
For more on Scenes, see Section 7.
PITCH DETECTOR
The pitch detector analyze the pitch of
your playing and outputs a low value for
low notes and a high value for high notes.
SELECTING A DETECTOR INPUT
ADSR, Envelope, and Pitch controllers
(plus the tuner and several other
functions) monitor only IN [PRE] by default.
If your rig is POST ONLY, where input 1 is not
used, please change the location of the GLOBAL
DETECTOR to IN [POST]. Find it on the SETTINGS
page o the GLOBAL menu under SETUP.
ADSR1 + ADSR2
The two ADSR sources are “envelope
generators” with ATTACK, DECAY,
SUSTAIN and RELEASE parameters (thus “ADSR”).
The ADSR is triggered whenever the signal level
exceeds its THRESHOLD (measured at the input
of the Global Detector, p. xx). The envelope has
three self-explanatory MODES and can optionally
be set to RETIGGER every time the threshold is
exceeded.
ENVELOPE FOLLOWER
The Evelope Follower converts input
levels to control signals, responding
variably to your playing dynamics. The classic
example is a touch-wah, where the frequency of
the wah varies based on how hard you play. In
comparison, the ADSR envelope generator always
creates the same control signal, but only triggers
when you play hard enough.
Each of the Internal controllers can be programmed per-preset for use as modier sources. To access pages
and parameters for these controllers, press SETUP followed by the footswitch for the Controllers menu.
Notice that some parameters of these controllers can be modied themselves for truly interactive dynamics!