normalize ☆

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Description:
Adjust volume of audio files to a standard level

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Multimedia

Tags: audio multimedia cli volume normalization audio-processing

Install: brew install normalize

About:
Normalize is a command-line tool that adjusts audio file volumes to a standard level using RMS (Root Mean Square) power. It ensures consistent playback volume across different tracks without re-encoding, preserving original audio quality. This is particularly useful for creating uniform music collections or podcasts.

Key Features:

Adjusts volume without re-encoding audio
Uses RMS for perceptually accurate volume measurement
Supports MP3, OGG, FLAC, and other formats
Batch processing capabilities
Preserves original audio quality

Use Cases:

Standardizing volume across a music library
Preparing podcast episodes for consistent listening
Normalizing audio samples for production work
Batch processing audio files before distribution

Alternatives:

ffmpeg – More powerful but requires manual volume filter configuration
mp3gain – MP3-specific alternative with similar lossless volume adjustment

Version History

Detected	Version	Rev	Change	Commit
Sep 16, 2025 4:09pm		0	VERSION_BUMP	4bf988b2
Sep 10, 2024 7:56pm		0	VERSION_BUMP	1039ffa3