Wah High Pass

From WiKPA
Jump to: navigation, search


Effect description goes here


Parameter Range Default Description
Page 1/3
Manual 0.0 to +10.0 +3.4 This is the base value for the Wah effect. It determines the zero or heel position of the pedal. When “Pedal Mode” is set to off, “Manual” controls the static pedal position.
Peak 0.0 to +10.0 +7.5 This parameter controls the intensity of the effect. The actual choice of the physical parameter depends on the effect type: for Wah Wah, and other filter effects, the “Peak” control varies the Q-factor or resonance of the filters. On other effects it controls the feedback of the effect, which is quite similar to Q-factor or resonance.
Pedal Range -100% to +100% +31% This parameter determines the maximum impact of the pedal, as an offset to the value selected for the “Manual” parameter. Negative values of “Range” will reverse the swell direction of the pedal or touch effect, so the effect will go down, when you push the pedal forward.
Peak Range -100% to +100% -43% Determines to what extent the position of the pedal influences the “Peak” intensity. Many original wah pedals have a dependency between the pedal position and the Q-Factor of the wah filter. This can be controlled by “Peak Range”.
Page 2/3
Pedal Mode Off, Touch, On, Bypass @ Stop, Bypass @ Heel, Bypass @ Toe Bypass @ Stop
  • Off - The pedal has no effect. The effect will be static, and can still be controlled by the “Manual” soft knob.
  • Touch - Uses the picking strength to control the effect, as described below.
  • On - The Wah pedal is active. Control the impact of the pedal by the “Range” parameter.
  • Bypass @ Stop - The Wah pedal is active. The stomp effect will be smoothly faded in when you start moving the pedal, and smoothly faded out when you stop moving it.
  • Bypass @ Heel - The Wah pedal is active. The stomp effect will smoothly fade out when you park the pedal at the heel position.
  • Bypass @ Toe - The Wah pedal is active. The stomp effect will smoothly fade out when you park the pedal at the toe position.
Mix 0% to +100% +100%
Ducking -5.0 to +5.0 0.0
Page 3/3
Touch Attack* -5.0 to +5.0 0.0 Controls the speed of reaction to the guitar attack.
Touch Release* -5.0 to +5.0 0.0 Determines the rate at which the effect falls back to its rest position.
Touch Boost* -5.0 to +5.0 0.0
Volume -5.0 to +5.0 0.0 Use this to extend the scale of the Range parameter. You will also notice, when “Range” is low, but “Touch Boost” is high, you can push the intensity up to a ceiling, that can be useful for certain effects.

* only available when Pedal Mode is set to Touch.


Our lowpass and highpass in the Wah section are ready made for sci-fi effects. Still they are studio quality filters with an even higher steepness and perfect to shape your signal in a constant fashion. This is why we gave it the names "lowpass" and "highpass" and not some sci-fi names. Set all parameters to zero and use the Manual parameter to tune the cutoff frequency to shape your signal.

Both have 24 dB/Oct and resonance (Peak).


Q: I tried the high pass from the Wah section, but I’m not sure what to do with the peak setting and how to set the frequency.

A: ckemper - Set Peak to zero. Choose the desired cutoff frequency by Manual.

Q: How does the 0-10 scale correspond to frequency? Let’s say I’m looking for a low pass at 13 kHz.

A: ckemper - The obvious answer would be 'use your ears, not your eyes'. You could turn up the resonance [Peak] and scan the signal by sweeping the frequency knob until the resonance at the cutoff point amplifies the lowest of the frequencies you want to remove. Reduce resonance [Peak] and turn down the frequency control a bit until the desired result is reached.

For a typical lowpass/highpass scenario, try a lowpass with Manual set between 8.6 (about -3dB @ 5k) and 9.0 (attenuation begins @ 5k, but doesn't affect 5k) and Highpass Manual set to 0.5 (removing stuff below 50Hz). Set Peak @ 0 FOR both.