Envelope Filters
Envelope filter pedals give you that classic auto-wah quack by making the filter react to how hard you play. They are perfect for funk, soul, jam-band tones and adding movement to bass or synths. At Guitar FX Direct you will find everything from aggressive, dynamic filters like the Death By Audio Deep Animation and Mu-Tron inspired designs such as the Mojo Hand FX Little Wonder, through to refined auto-wah favourites like the Emma Electronic Discumbobulator.
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Envelope Filters – Frequently Asked Questions
What is an envelope filter and how is it different from a wah pedal?
Both envelope filters and wah pedals sweep a filter across your signal to emphasise certain frequencies. A traditional wah is controlled with your foot, rocking the pedal back and forth. An envelope filter reacts automatically to your playing dynamics, opening up more as you hit the strings harder and closing down when you play softly. This makes it great for rhythmic, touch-sensitive funk lines on guitar or bass.
Can I use envelope filters on bass, synth or keyboards?
Yes. Envelope filters work brilliantly on bass and synths as well as guitar. Pedals like the Death By Audio Deep Animation are designed to handle everything from deep bass to hot line-level signals, while the Discumbobulator is popular with both guitarists and bassists for its wide headroom and musical response.
What controls should I look for on an envelope filter?
Most envelope filters offer controls for sensitivity, filter range and sometimes resonance or Q. Sensitivity determines how easily the filter opens in response to your picking, while range and resonance set the character of the sweep. Some pedals, such as the Mojo Hand FX Little Wonder, also let you choose between low-pass and band-pass modes for thicker or more vocal tones.
Where should I place an envelope filter in my signal chain?
Envelope filters usually work best early in the chain, after your tuner and before heavy drive or modulation. This allows the pedal to “see” your picking dynamics clearly so the filter can react accurately. If you use a compressor, try placing it either just before or just after the envelope filter and see which feels more responsive for your style.
Are envelope filters only for funk music?
While envelope filters are strongly associated with 70s funk and disco, they are useful in many other styles. Subtle settings can add animation to ambient or indie parts, while more extreme, overdriven settings on a pedal like the Deep Animation can push into synth-like, almost fuzzed filter sweeps for experimental rock, electronic and sound-design work.
