Filter block

Manual

• 5.11 Filter [FLT]
• 5.34 Wahwah [WAH]
• 7.3 Control Sources

User contributions

Filter

• The Filter is a very versatile effect. For example, it can be used:
  • As an one-band equalizer
  • To boost the input of an amp block
  • To boost the signal level for leads
  • As a high-pass or lo-pass filter
  • As an envelope filter

Filter: X/Y

• The Axe-Fx II XL adds X/Y switching capability to the PEQ block.

Filter: Variable-Q

• Firmware 15: "Added Variable-Q EQ types to Graphic EQ, Filter and Amp blocks. Many “classic” graphic equalizers use variable-Q designs which may be more familiar to some users as opposed to constant-Q filters. In the Filter block this type is selected by choosing the “Peaking2” type. The Graphic EQ block now has four constant-Q modes and four variable-Q modes. The Amp block now has three constant-Q modes and three variable-Q modes."

Filter: Tilt EQ

• The Tilt EQ is a slope filter that allows broad adjustment of the tone using just two parameters: Frequency and Gain. The Gain parameter sets the maximum gain of the filter relative to the center frequency. For example, a gain of 10 dB would set the maximum gain to 10 dB. The gain at the center frequency would be 0 dB and the minimum gain would be -10 dB, therefore a total of 20 dB of EQ would be applied.

Filter: Envelope Filter

• There's no dedicated Envelope filter effect block.
• You can achieve this effect by attaching a LFO or Envelope to a Filter (or Wah) block.
• You'll find examples in this thread, this thread and on Axe-Change. Or try the Psychadelic Duck preset.