Filter effects are frequency changers. They can serve as stationary or dynamic equalizers that can bypass, reduce, or accentuate different frequencies in your signal. 

Some of the filter effects are:

1. Equalizers - adjust tone parameters such as treble, mids and bass. It is common to see as many as 7 and 10 parameters on guitar EQ's
2. Wah-wah - a pedal that is basically a tone knob with a rocker foot pedal
3. Envelope Filter - also know as auto-wah

• Envelope Filter (0)
• Equalizers (0)
• Wah Wah pedal (1)