65
9 MODIFIERS
INTERNAL CONTROLLERS
LFO1 + LFO2
A Low Frequency Oscillator (“LFO”)
generates control signals in a variety of
periodic and random wave shapes. Examples of
LFOs in use include the pulse of a tremolo, the back
and forth sweep of a phaser, or the random lter in
Ship Ahoy by Frank Zappa.
Type sets the waveform or shape. You can set the
Rate manually or sync it to the current Tempo. You
can vary the overall Depth and Duty, or symmetry.
LFO WAVEFORMS are illustrated in “The Fractal
Audio Blocks Guide”. The Run parameter starts and
stops the LFO. This can be used to keep it from
drifting out of time.
Each LFO outputs “A” and “B” signals, each of which
is an independent modier source on the list. You
can change the Phase of output B with respect to A.
Quantize changes smooth waveforms into stepped
ones. Try it on the “TRI” waveform for example.
TEMPO
SEQUENCER
The Sequencer generates control patterns
by looping through 2–32 “stages.” Set the
Number of stages, their values and the
Rate or Tempo. The Step switch advances to the
next step while paused. The Run switch allows you
to start, stop or pause. Damping “slurs” the steps.
SCENE CONTROLLERS
Each of the four Scene Controllers
is a “virtual knob” whose setting can
programmed with a different value in every
Scene. By assigning this knob as a modier source,
you can create “per-scene” parameters.
For example, you might assign Scene Controller 1 to
Input Drive in the Amp block with a value of 30% in
Scene1, 50% in Scene2, 66% in Scene 3, and so on.
As with any source, a scene controller can be
assigned to multiple parameters at the same time,
each with its own modier settings.
A Scene Controllers tutorial appears on p. 68.
For more on Scenes, see Section 6 on p. 49.
PITCH FOLLOWER
The Pitch Follower analyzes the pitch of your
(monophonic) playing and outputs a low
value for a low note and a high value for a high note.
ADSR1 + ADSR2
The two ADSR sources are envelope
generators with Attack, Decay, Sustain
and Release settings (thus “ADSR”). The ADSR is
triggered whenever the level at the selected input
(1 or 2) exceeds a set Threshold. The envelope
has three self-explanatory modes (Once, Loop, and
Sustain) and can optionally be set to Retrigger every
time the threshold is exceeded.
In comparison to the Envelope Follower, the ADSR
envelope generator always creates the same control
signal, but only triggers when you play hard enough.
ENVELOPE FOLLOWER
This converts input level to a control signal,
responding variably to your playing dynam-
ics. A classic example is a “touch-wah”
where the effect is triggered by how hard you play.
You can set Attack and Release times, set the trigger
Threshold, and adjust the Gain and low/high lters
on the trigger input, which can be set to Input 1 or
Input 2.
Internal Controllers can be programmed per-preset for use as modier sources. To access these parameters,
push the CONTROLLERS button on the Home page (D) or press TEMPO. Save the preset to commit changes.
Tempo appears in the Controllers menu. For more information, see Section 11: Tempo.
The Internal Controllers menu offers four channels for four sets of independent settings for ALL of
the items listed above: four tempos per preset, four sequencer settings, etc. When you change the
channel, ALL of the controllers switch to the new channel and the new settings. FM9-Edit provides a
way to copy/paste Controller channels.
MANUAL CONTROLLERS (Next page)
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