AACGain
AACGain is an open source audio normalization tool that adjusts the volume of AAC, MP3, Ogg Vorbis, FLAC, WavPack, MP4, M4A, and Apple Lossless (ALAC) audio files. It aims to match the loudness of all tracks in an album or collection to the same standard level.
audio
normalization
volume
aac
mp3
ogg
flac
wavpack
mp4
m4a
alac
AACGain: Open Source Audio Normalization Tool
Adjusts volume of AAC, MP3, Ogg Vorbis, FLAC, WavPack, MP4, M4A, and ALAC audio files for a uniform loudness level across albums and collections
What is AACGain?
AACGain is an open source audio normalization tool that adjusts the volume of AAC, MP3, Ogg Vorbis, FLAC, WavPack, MP4, M4A, and Apple Lossless (ALAC) audio files. It was created in 2001. It aims to match the loudness of all tracks in an album or collection to the same standard level.
By normalizing the loudness, AACGain makes it easier to set the volume correctly when listening to files encoded in different formats or from different sources. This avoids the need to constantly adjust volume between tracks. It applies ReplayGain adjustment directly to the file metadata.
Key features:
- Free and open source software
- Works on Windows, macOS, and Linux
- Command-line interface
- Analyzes loudness and normalizes volume automatically
- Preserves audio quality when adjusting gain
- Updates tags with ReplayGain information
- Handles a variety of audio formats
- Works well for normalizing albums, compilations
Overall, AACGain makes it easier to achieve consistent volume levels across large audio collections with mixed sources and formats. Its batch processing capabilities are useful for post-processing in audio production and broadcasting.
AACGain Features
Features
- Adjusts volume of audio files to match a target loudness level
- Supports AAC, MP3, Ogg Vorbis, FLAC, WavPack, MP4, M4A and Apple Lossless (ALAC) file formats
- Open source and cross-platform (Windows, Mac, Linux)
- Command line interface and GUI available
- Can process single files or batches of files
- Preserves original audio quality when normalizing volume
- Can be integrated into audio players and servers
Pricing
- Open Source
- Free
Pros
Free and open source
Works across platforms
Easy to use interface
Supports many formats
Preserves audio quality
Can normalize collections of files
Integrates with other apps
Cons
Lacks some advanced normalization options
CLI not as user friendly as GUI
GUI version is outdated
Development seems stagnant
Not as full featured as proprietary options
Official Links
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