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5 - Effects
Core Effects Descriptions

48

Creative Professional

This effect creates the sound of a guitar wah-wah pedal. The “Wah” filter sweep is 
automatically triggered from the amplitude envelope of the input sound. Auto-wah 
works well with percussive sounds such as guitar or bass.

The Auto-Wah is a bandpass filter whose frequency can be swept up or down by an 
envelope follower, which extracts the volume contour of the input signal. The Envelope 
Sensitivity setting allows you to properly set up the envelope follower to receive a wide 
variety of input signals. This ‘envelope’, or volume contour, controls the frequency of 
the bandpass filter so that it sweeps up and down with each new note. The Attack 
controls the rate of the note-on sweep. As the input sound fades away, the filter sweeps 
back at a rate determined by the Release setting.

The wah direction allows the filter to be swept either up or down in frequency. Use a 
higher Center Frequency setting when the wah direction is down.

Wah Direction

Allows you to sweep the wah up or down.

Env. Sensitivity

Controls how closely the wah sweep follows the input signal.
Range: -12dB to +18dB

Env. Attack Time

Sets the starting rate of the “wah” sweep.
Range: 0ms to 500ms

Env. Release Time

Sets the ending or release rate of the “wah” sweep.
Range: 10ms to 1000ms

Sweep Range

Controls the amount of “wah” sweep. Range: 0% to 100%

Center Frequency

Sets the initial bandpass filter frequency.
Range: 80Hz to 2400Hz

Bandwidth

Sets the width of the bandpass filter. Range: 1Hz to 800Hz

Center

Frequency

Attack

Release

Sweep Range

 Bandwidth

Envelope

Sensitivity