Audio effects node
Audio Filter
A classic analog-style filter with 12 types on tap — low-pass and high-pass at 12/24/36 dB per octave, band-pass, notch, shelves, and peak — with an envelope follower for auto-wah and a sidechain input so another sound can sweep the cutoff for you.
What it does
Audio Filter is an audio effect: it changes the sound that flows through it. It takes audio in and gives audio out.
Try it
Sweep the cutoff with an LFO for a slow, breathing filter-sweep synth part.
Wavetable SynthAudio Filter (LFO Mod)Audio Out
Inputs and outputs
Inputs
- audio audio
Outputs
- audio out
Controls
Every control with a range can be driven by a modulator, a note, an audio level or a sketch.
| Control | Range or options | Default |
|---|---|---|
| mix | 0 to 1 | 1 |
| freq | 20 to 20000 | 1000 |
| Q | 0.1 to 18 | 0.707000017 |
| gain | -24 to 24 | 0 |
| env | -1 to 1 | 0 |
| rate | 0.02 to 5 | 0.5 |
Example patch
This patch wires Audio Filter to what it needs and shows the result. Download it, then use File, Open in Infinite, or read it here: it is plain text.
infinite-patch 1
rev 2
# Audio Filter: a starting patch for the Audio Filter node
node 1 AudioEffects Audio Filter
id node
pos 520 300
end
node 2 Synths Oscillator
id in0
pos 0 300
end
node 3 Utility Audio Out
id speakers
pos 1080 300
end
aud node 0 in0
aud speakers 0 node