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OpenVoxTuner Documentation

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Real-time pitch correction & harmony generation for vocals
VST3 / AU / Standalone — Open Source AGPLv3
Download Latest Release GitHub Repository
User Guide Parameters Reference
Architecture Build Guide

What is OpenVoxTuner?

OpenVoxTuner is a real-time vocal pitch correction and harmony generation plugin built with JUCE 8 (C++17). It provides:

  • Auto Mode: Scale-aware pitch correction with adjustable speed, amount, and character
  • Graphic Mode: Melodyne-style curve editor for manual pitch editing
  • Harmony Engine: 21 harmony types with formant-preserved pitch shifting (up to 4 voices)
  • ARA2 Integration: Full DAW timeline sync with key/scale detection
  • Cross-platform: Windows (VST3/CLAP), macOS (VST3/AU/CLAP), Linux (VST3/CLAP)

Key Features

Pitch Correction

  • YIN pitch detector with configurable threshold
  • Scale quantization with 14 built-in scales + custom scale editor
  • Speed control (0-200ms) for natural to hard-tuned sound
  • Amount control (0-100%) for blending corrected/original signal
  • Correction modes: Transparent (gentle) vs Modern (aggressive)

Harmony Engine

  • 21 harmony types: intervals, triads, vocal stacks, octaves
  • Use Voice mode: pitch-shifted live vocal (formant-preserved)
  • Synth mode: 6 tone colors (Choir, Organ, etc.) with tone color parameter
  • Voice-type aware: Bass, Baritone, Tenor, Alto, Soprano, Universal
  • Independent formant shift (±5 semitones) per voice

ARA2 Integration

  • Automatic key/scale detection from audio
  • Time-signature aware ruler in curve editor
  • Playhead follow & loop sync with DAW
  • Multi-signature project support

Quick Start

# 1. Download your platform
Windows:  VST3 / CLAP / Standalone (~45 MB)
macOS:    VST3 / AU / CLAP / Standalone (~52 MB)
Linux:    VST3 / CLAP / Standalone (~48 MB)

# 2. Install
Windows:  Copy .vst3 to C:\Program Files\Common Files\VST3\
          Copy .clap to C:\Program Files\Common Files\CLAP\
macOS:    Copy .vst3 to ~/Library/Audio/Plug-Ins/VST3/
          Copy .component to ~/Library/Audio/Plug-Ins/Components/
Linux:    Copy .vst3 to ~/.vst3/ or /usr/lib/vst3/

# 3. Load in your DAW
- Insert on vocal track
- Enable ARA2 if supported (Reaper, Studio One, Logic, Cubase, Bitwig)
- Select key/scale or enable auto-detection
- Adjust Speed & Amount to taste

License

OpenVoxTuner is licensed under AGPLv3 — free for personal and commercial use, with source code available on GitHub.

View License →

Support the Project

Built with ❤ by EiffelBS using JUCE 8. Documentation generated with MkDocs Material.