Broadcast Loudness Normalizer

Broadcast Loudness Normalizer is a desktop batch audio loudness meter and dual-pass
EBU R128 / ITU-R BS.1770 mastering processor for Linux.
An independent Linux alternative to Breakaway Audio Enhancer for broadcast loudness
management and consistent playback leveling, it measures exact Integrated Loudness
(LUFS), Loudness Range (LRA), Loudness Threshold, and 4x-oversampled True Peak (dBTP),
and normalizes audio batches to industry loudness targets.

Key Features:
- Standards-Compliant Loudness Presets: Built-in profiles for Streaming (-14.0 LUFS /
-1.0 dBTP), Podcast & Spoken Word (-16.0 LUFS / -1.0 dBTP), EBU R128 Broadcast
(-23.0 LUFS / -1.0 dBTP), ATSC A/85 (-24.0 LUFS / -2.0 dBTP), and custom targets.
- True Dual-Pass Linear & Dynamic Mastering: Executes Pass-1 JSON loudness analysis
followed by Pass-2 linear or dynamic normalization into 24-bit WAV, FLAC, MP3,
Opus, or M4A/AAC with post-render verification metering.
- Before / After LUFS & True Peak Comparison Charts: Visualizes input versus normalized
Integrated Loudness (LUFS), Gain Delta (dB), Loudness Range (LU), and True Peak
headroom margins across your entire batch.
- EBU R128 Momentary & Short-Term Timeline: Plots 400ms Momentary and 3s Short-Term
loudness curves over time alongside complete JSON telemetry and CSV/JSON reports.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by ClaessonEdwards or BreakawayOne.