Drive: This control adds warmth to the signal by mimicking the behavior of a tube amplifier’s
harmonic tremolo.
Env Depth: This control uses the amplitude envelope of the input to increase or decrease the
tremolo’s depth. Positive values increase the depth of the tremolo when you attack a note. The
depth will return to the level set by the Depth control as the note decays. Additionally, louder notes
will have greater depth than softer notes. Negative values reduce the tremolo when you attack a
note, increasing the clarity of your attacks and making sustained notes more expressive over time.
Playing louder will reduce the depth of the tremolo, and you can use large negative values to create
tremolos that only appear when the input is soft.
The EnvDepth control covers a large range, so we recommend starting with values closer to 0, and
then adjusting the control as needed.
Env Rate: This control uses the amplitude envelope of the input signal to affect the rate of the
tremolo. With positive values, the tremolo jumps up in frequency when you attack a note and
gradually returns to the original rate set by the Rate or Tap Tempo controls. The harder you play, the
longer it will take to return. Negative values will temporarily reduce the rate of the tremolo when
you attack a note, and the rate will return to the value set by the RATE knob or Tap Tempo as the
note decays. With larger negative values and high Rate values, you can use this control to create
bouncing-ball tremolo type effects. This is especially effective with the Shape control set to Pulse,
RampDn, RampUp, or Slope0.
The Env Rate control covers a large range. At 100%, it can push the internal LFO rate up to 80Hz,
so we recommend starting with values closer to 0, and then adjusting the control as needed.
Env X-Over: This control uses the amplitude envelope to affect the crossover frequency.
To create a swept filter effect similar to an autowah, set X-Overlap to 100, set the X-Over
frequency to 200Hz, and then increase the amount of the EnvX-Over control as necessary. The
frequency of the crossover filter will now track the loudness of the input signal.
You can create a single-notch phaser by turning Depth to 0, X-Overlap to -100, X-Over to 3500,
and then set EnvX-Over to a medium negative value, adjusting to taste. Once you have a sound you
like, try slowly turning up the Depth control. Try playing long chords with these settings. In addition
to the phasing effect, you will now notice that the tremolo also seems to change as a chord dies out.
This is because the crossover frequency returns to the high X-Over value (3500Hz) as the chord
decays.
Try setting Shape to an asymmetric waveform (e.g., RampDn) to produce waveform morphing
effects as the crossover frequency changes.
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11. ALGORITHM GUIDE
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