537 MB / 1 GB

OpenTune is an open-source vocal pitch correction tool that combines a standalone editor with a VST3 plugin workflow. Instead of basic DSP transposition, it uses RMVPE pitch extraction and a PC-NSF HiFiGAN neural vocoder through ONNX Runtime to regenerate corrected vocals while aiming to preserve the singer’s formants.

The editor is built around graphical tuning rather than one-knob automatic correction. You can draw pitch curves, edit detected notes, use anchor tools, detect key automatically, correct to common scales, and work in ARA2-capable hosts when the host integration behaves correctly.

Key Features
– Neural-vocoder pitch correction designed to preserve vocal formants during tuning and transposition
– RMVPE pitch extraction with PC-NSF HiFiGAN resynthesis through ONNX Runtime
– Graphical editing workflow with hand-drawing, note editing, anchor tools, and automatic tuning
– Automatic key detection plus scale correction for Chromatic, Major, Minor, Pentatonic, Dorian, Mixolydian, and Harmonic Minor modes
– Standalone application and VST3 plugin builds, with ARA2 extension support in compatible hosts
– GPU-accelerated inference using DirectML on Windows and CoreML on macOS
– Multilingual interface support for Chinese, English, Japanese, Russian, and Spanish

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OpenTune.1.7.3.WIN  ( 500 MB )

OpenTune.1.7.1.MAC.part1  ( 500 MB )

OpenTune.1.7.1.MAC.part2  ( 500 MB )