VCOTuner

A JUCE-based precision tuner for VCOs, VCFs and other analog gear. Runs on Windows, macOS (including Sequoia 15.x), and Linux.

Features

• Scientific Tuner Display - High-precision frequency measurement with Hz and cents error display
• Tabbed Interface - Separate Tuner and Chart views
• Pitch Tracking - Real-time frequency detection with deviation meter
• Tuning Reports - Export measurements as PNG with device info

This is a fork of TheSlowGrowth/VCOTuner updated for modern macOS compatibility.

How It Works

Traditional VCO tuning requires constant back-and-forth between fine tune and trimmer adjustments. VCOTuner eliminates this by:

1. Outputting MIDI notes across a selectable range
2. Measuring the actual frequency for each note
3. Using a center reference pitch so you can focus solely on trimmer adjustments

Tuning takes minutes instead of hours.

Download

Head over to the "release" section of this repository to download the latest release.

Building from Source

Prerequisites

• CMake 3.12 or later
• C++17 compatible compiler
• Platform-specific dependencies (see below)

macOS

git clone --recursive https://github.com/Ziforge/VCOTuner.git
cd VCOTuner
cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build

The built app will be in build/VCOTuner_artefacts/Release/VCOTuner.app

Windows

git clone --recursive https://github.com/Ziforge/VCOTuner.git
cd VCOTuner
cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build --config Release

Linux

Install dependencies first:

sudo apt-get install libasound2-dev libcurl4-openssl-dev libfreetype6-dev \
    libx11-dev libxcomposite-dev libxcursor-dev libxinerama-dev \
    libxrandr-dev libxrender-dev libwebkit2gtk-4.1-dev

Then build:

git clone --recursive https://github.com/Ziforge/VCOTuner.git
cd VCOTuner
cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build

Issues

Report bugs or request features here

Credits

Original application by TheSlowGrowth