ENVELOPE FOLLOWER

Listen

Controls

• TargetLowpass / Bandpass / Highpass / Volume — What the envelope controls: low-pass, band-pass or high-pass filter cutoff, or the volume.
• Attack0.1 to 100 ms — How quickly the envelope follows rising level.
• Release10 to 2000 ms — How quickly the envelope falls back.
• Sensitivity−24 to +24 dB — Input gain into the detector; higher values reach the end of the sweep with softer playing.
• Low Freq20 to 2000 Hz — Cutoff at the quiet end of the sweep.
• High Freq500 to 15000 Hz — Cutoff at the loud end of the sweep.
• Resonance0.5 to 10 — Filter Q; higher values give a more vocal, peaky wah.
• DirectionUp / Down — Up = louder playing opens the filter; Down = louder playing closes it.
• Mix0 to 100% — Blend between dry and processed signal.

Best uses

• Funk auto-wah on guitar and bass
• Touch-sensitive synth filtering
• Dynamic filter effects on drums
• Envelope-driven volume swells and ducking

Properties

Input → stereo-linked envelope (−48 to 0 dB mapped to 0–1) → exponential cutoff sweep from Low Freq to High Freq → TPT state-variable filter (or VCA in Volume mode) → Dry/Wet Mix → Output. Zero latency.

Formats

• JSFXJSFX for REAPER, with REAPER's own sliders
• GFXJSFX GFX for REAPER, with its own interface
• VST3VST3 for any DAW
• CLAPCLAP for any DAW

Factory presets

Funk Guitar Wah · Reverse Guitar Wah · Bass Auto-Wah · Touch Synth Filter · Drum Filter Breathe · Soft Volume Swells

In the FX chains and Rack presets

Funk Rig

See every FX chain

Try it