432 Hz Tuner

Open Source Real-Time Audio Frequency Correction

Vision

An open-source, offline-capable application that intercepts system audio output and converts it from A=440 Hz standard tuning to A=432 Hz tuning in real-time. This project aims to provide free access to frequency correction technology that is typically only available through expensive commercial solutions requiring internet connectivity.

Why A=432 Hz?

Many believe that A=432 Hz (sometimes called “natural tuning” or “Verdi’s A”) produces a more harmonious and calming sound compared to the modern standard of A=440 Hz. This application allows users to experience their entire audio experience in 432 Hz tuning without needing specially recorded content.

Project Goals

• Cross-platform: Linux (primary), macOS, Windows support
• Real-time processing: Low-latency audio conversion
• Open source: MIT license for maximum accessibility
• Offline-capable: No internet dependency
• User-friendly: Simple interface for non-technical users
• Professional quality: Minimal artifacts from pitch conversion

Current Status

Planning Phase – Documentation and architecture design