Spruce Normalizer is a simple and effective application for normalizing the volume of .mp3 and .wav audio files.
It features a graphical interface built with PyQt6 and is designed to make audio normalization easy and accessible for everyone.
Whether you're working on podcasts, music, or voice recordings, Spruce Normalizer helps you achieve a consistent and well-balanced output ready for sharing or publishing.
Spruce Normalizer adjusts the loudness of multiple audio files so they play back at the same perceived volume.
It uses LUFS (Loudness Units relative to Full Scale), LRA (Loudness Range), and True Peak values to match audio levels between different files.
- Intuitive graphical interface (PyQt6)
- Supports
.mp3and.wavaudio formats - Handles multiple files at once
- Built-in FFmpeg — no need to install anything separately
- Minimal setup: just load your files and click
- Python 3.9+
The app includes a copy of FFmpeg internally, so there's no need to install it on your system.
Here’s a preview of the graphical interface:
This project is licensed under the terms of the GNU General Public License v3.0 (GPLv3).
You are free to use, modify, and distribute it under the conditions of the license.
Simone De Angelis