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
Nov 25, 2022 9:10am 0 VERSION_BUMP 9077b4cd
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