OpenVoxTuner icon
v0.1.69 — Open Source AGPLv3

OpenVoxTuner

Real-time pitch correction & harmony generation for vocals. VST3 / AU / Standalone.

VST3 AU Standalone ARA2
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PITCH CORRECTION HARMONY ENGINE FORMANT SHIFT ARA2 NATIVE REAL-TIME VISUALIZER CURVE EDITOR OPEN SOURCE PITCH CORRECTION HARMONY ENGINE FORMANT SHIFT ARA2 NATIVE REAL-TIME VISUALIZER CURVE EDITOR OPEN SOURCE
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Harmony Types
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Effects Included
Free Forever

Everything you need
for vocal production

Professional-grade pitch correction, harmony generation, and creative tools — all open source.

Pitch Correction

Auto Mode with scale-aware correction, adjustable speed/amount/character. Transparent or Modern style.

Harmony Engine

21 harmony types: intervals, triads, vocal stacks. Voice mode (pitch-shifted live vocal) or Synth mode (6 tone colors).

Formant Preservation

Independent formant shift (+-5 semitones) with LPC cross-synthesis for natural-sounding transposition.

Key Detection

Detect musical key via the companion app OpenVoxKey (runs alongside your DAW) or directly from a sidechain input. Automatic scale quantization.

Real-time Visualizer

Live pitch display with input/output/harmony traces, piano keyboard, cents meter, waveform overlay.

Curve Editor

Graphical pitch editing: add/move points, snap to scale/grid, copy/paste, undo/redo.

MIDI OUT

Use the plugin as a MIDI source in your DAW. The tuned voice and 4 harmony voices each output on their own MIDI channel for driving virtual instruments.

See it in action

A professional vocal production tool with an intuitive, dark-themed interface.

Real-time Pitch Visualization
Live Mode

Real-time Pitch Visualization

Live pitch display with input/output/harmony traces, cents meter, and waveform overlay. See every correction happen in real time.

21 Harmony Types
Harmony Engine

21 Harmony Types

From simple thirds to vocal stacks and power chords. Voice mode uses pitch-shifted live vocals, Synth mode offers 6 tone colors.

Graphical Curve Editor
Graphic Mode

Graphical Curve Editor

Graphical pitch editing with click-to-add points, snap to scale/grid, copy/paste, undo/redo. Full creative control.

Piano Roll View
Piano Roll

Piano Roll View

Switch between curve and piano roll editing. See harmony voice distribution across the keyboard with clear note blocks.

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AGPLv3 VST3 AU STANDALONE ARA2 AGPLv3 VST3 AU STANDALONE ARA2

Get started
OpenVoxTuner

Free and open source under AGPLv3.

v0.1.69

macOS

macOS 11+ (Apple Silicon & Intel)

Formats
VST3 / AU / Standalone
Size
~52 MB
Download macOS

Support the project

OpenVoxTuner is free and open source. If you find it useful, consider supporting its development.

Watch demos on YouTube

Every contribution matters — whether it's code, bug reports, translations, or a kind word.