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Chapter 6 Filter eects 137
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Classic Wah: This setting mimics the sound of a popular wah pedal with a slight
peak characteristic.
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Retro Wah: This setting mimics the sound of a popular vintage wah pedal.
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Modern Wah: This setting mimics the sound of a distortion wah pedal with a constant
Q(uality) Factor setting. The Q determines the resonant characteristics. Low Q values aect
a wider frequency range, resulting in softer resonances. High Q values aect a narrower
frequency range, resulting in more pronounced emphasis.
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Opto Wah 1: This setting mimics the sound of a distortion wah pedal with a constant
Q(uality) Factor setting.
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Opto Wah 2: This setting mimics the sound of a distortion wah pedal with a constant
Q(uality) Factor setting.
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Resonant LP: In this mode, the Wah works as a resonance-capable lowpass lter. At the
minimum pedal position, only low frequencies can pass.
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Resonant HP: In this mode, the Wah works as a resonance-capable highpass lter. At the
maximum pedal position, only high frequencies can pass.
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Peak: In this mode, the Wah works as a peak (bell) lter. Frequencies close to the cuto
frequency are emphasized.
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Auto Gain button: Turn on to limit the output signal dynamic range. The wah eect can cause
the output level to vary widely. Auto Gain compensates for this tendency and keeps the
output signal within a more stable range.
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Relative Q knob: Rotate to adjust the main lter peak, resulting in a sharper or softer
wah sweep.
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Wah Level knob: Rotate to set the amount of the wah-ltered signal.
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Depth knob: Rotate to set the depth of the Auto Wah eect. When set to 0, the automatic
wah feature is disabled.
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Attack knob: Rotate to set the time it takes for the wah lter to fully open.
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Release knob: Rotate to set the time it takes for the wah lter to close.
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(Pedal) Range slider: Drag to sweep the wah lter. The two smaller sliders set the maximum and
minimum values of the sweep range.