AvailableEffect

Filter

A resonant low-pass filter for shaping tone.

Engine preview

Not built for macOS, Windows or Linux

A stage of OSC-1. It works the same on its own page as it does in the chain, same parameters, same paths.

About

A resonant multimode filter - low-pass, high-pass, band-pass, notch - with an envelope contour. Nothing else in a subtractive synth changes the sound this much per degree of rotation.

Build evidence

Every row below is a recorded build row or the recorded absence of one. Nothing here is inferred from what this module is meant to support.

Module: music.codex.filter v0.1.0
Built at: no recorded row carries a build time; the browser lanes record none
Closure hash: not a Processor — no lowering closure
Toolchain: scriptc 64acce1ae3b8…
moduleToolchainDist c621ffab721d…
pluginShellKitRuntime bca003784692…
faceShellGeneration 8533207ab81f…
uiPreservation cd28dbd7e3d6…
packagerVersion 3

Build result and download for each format
Format	Result	Download
Browser package (JS)	Not built by this module's lane this module has no release.json; its packager lane records no browser program rows	Not built for the browser
Browser package (WASM)	Not built by this module's lane this module has no release.json; its packager lane records no browser program rows	Not built for the browser
VST3	Not built — the native export is blocked native-export.json records nativeEligibility "blocked"	Not built for macOS, Windows or Linux
Audio Unit	Not built — the native export is blocked native-export.json records nativeEligibility "blocked"	Not built for macOS
CLAP	Not built — the native export is blocked native-export.json records nativeEligibility "blocked"	Not built for macOS, Windows or Linux
Standalone app	Not built — the native export is blocked native-export.json records nativeEligibility "blocked"	Not built for macOS, Windows or Linux

Parity

No lane recorded an artifact; there is no parity evidence.

Presets

Start from a named sound, then adjust the instrument to make it yours.

InitDefault

Signal graph.

Experimental

Migration fallback: approximated from parameter groups, not a runtime wiring diagram.

How it works.

A second-order biquad in one of four modes. Cutoff sets its corner and Resonance sets the Q, which is emphasis at that corner rather than a separate resonance circuit - a real analogue ladder behaves differently at the extremes, and this does not pretend otherwise.

The contour is its own ADSR, separate from the amplitude envelope, sweeping from Base Freq upward by Env Octaves. That separation is the difference between this and OSC Mini, where one envelope does both jobs.