9

• Hard button: Activates the Distortion effect Hard mode. The distortion effect sounds
like a fully transistorized fuzz box.
• Distortion knob: Defines the amount of distortion. Turn this knob to zero to disable the
effect.
• Tone knob: Controls the treble portion of the distortion effect output.
ES2 Chorus Effect
A chorus effect is based on a delay line, the output of which is mixed with the original,
dry signal. The short delay time is modulated periodically, resulting in pitch deviations.
The modulated deviations, in conjunction with the original signal’s pitch, produce the
chorus effect.
To activate the Chorus effect
µ
Enable the Chorus button.
• The Intensity parameter determines the depth of the effect (how “rich” the modulation
is). Turn this knob to zero to disable the effect.
• The Speed parameter determines the modulation rate.
ES2 Flanger Effect
A flanger works in a similar fashion to a chorus, but with even shorter delay times. The
output signal is fed back into the input of the delay line. This feedback results in the
creation of harmonic resonances—which wander cyclically through the spectrum, giving
the signal a “metallic” sound.
To activate the Flanger effect
µ
Click the Flanger button.
• The Intensity parameter determines the depth of the effect—how “cutting” the
modulation is. Turn this knob to zero to disable the effect.
• The Speed parameter determines the modulation rate.
ES2 Phaser Effect
A phaser mixes a delayed and an original signal. The delayed element is derived from an
allpass filter, which applies a frequency-dependent delay to the signal. This is expressed
as a phase angle. The effect is based on a comb filter, which is basically an array of
inharmonic notches—rather than resonances, as with the flanger—which also wander
through the frequency spectrum.
To activate the Phaser effect
µ
Click the Phaser button.
• The Intensity parameter determines the depth of the “sweeping” effect—the width of
the modulation. Turn this knob to zero to disable the effect.
106 Chapter 5 ES2