AvailableMIDI & Modulation

Velocity

Shape, compress, or randomize note velocities.

Engine preview

VST3

About

Velocity reshapes how hard a note hits without changing its pitch or timing. The four modes cover the common needs: linear scaling for simple volume adjustment, compression to even out dynamics, expansion to exaggerate them, and fixed to force every note to the same intensity. The random knob adds a deterministic spread on top, seeded so it repeats exactly across renders.

Output velocity is always clamped to 1–127. It never reaches 0 because velocity 0 is a note-off in the MIDI spec, and silently turning a note-on into a note-off is a bug no matter what curve produced it.

System requirements.

The downloadable Velocity release supports the hosts and systems listed below.

VST3macOS · arm64
Works in Ableton Live, Reaper, Cubase, Studio One, Bitwig and FL Studio.

Version 0.1.0

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.velocity v0.1.0
Built at: 2026-09-12T10:59:48Z
Closure hash: a4b3dd854a48…
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)	Builtweb bundle sha256 cf831e9b1410… · 182 KB	Built, but no downloadable archive was recorded.
Browser package (WASM)	Builtweb bundle sha256 1154d761b4b4… · 2.0 MB	Built, but no downloadable archive was recorded.
VST3	Builtdarwin-arm64Steinberg validator + VST3 host render: passed bundle sha256 3f7fd453573b… · 2.1 MB	CodexVelocity-vst3-darwin-arm64.zip archive sha256 5efd014a2582… · 2.1 MB · darwin-arm64
Audio Unit	Not built no recorded artifact row for au; native-lane-report.json is absent or records no au row for this module	Not built for macOS
CLAP	Not built no recorded artifact row for clap; native-lane-report.json is absent or records no clap row for this module	Not built for macOS, Windows or Linux
Standalone app	Not built no recorded artifact row for standalone; native-lane-report.json is absent or records no standalone row for this module	Not built for macOS, Windows or Linux

Parity

browser-js = browser-wasm = vst3 qualified against their own recorded digests. Not recorded: au, clap, standalone.

Signal graph.

Experimental

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

How it works.

The velocity transform is applied inline to every noteOn. The curve mode selects the mapping function, amount controls its intensity, offset shifts the result, and random adds a deterministic spread. The seed is a hash of a running note counter, so the random sequence repeats exactly across renders and in the test suite. Output is always clamped to 1–127.