vorbisgain を Homebrew でインストール

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• vorbisgain

プロジェクトの歴史

VorbisGain came from the Ogg Vorbis and ReplayGain era, when listeners and music-library maintainers wanted album and track loudness consistency without destructive peak normalization. The project homepage describes it as a replacement for pre-encoding normalization: instead of changing samples, it analyzes perceived loudness and writes tags that compatible players can use at playback time.

The available public history is thin compared with core Xiph projects, but the tool's role is clear and stable: apply ReplayGain technology specifically to Ogg Vorbis files, add clipping-prevention hints, and rely on player support for the playback adjustment.

採用の歴史

VorbisGain became a small but durable distro package because it solved a common local-library problem for Ogg users. Debian's package description notes that the process is non-destructive and that many audio players in Debian supported reading the tags, including XMMS, Quod Libet, amaroK, Muine, and Rhythmbox.

使われ方

The man page describes `vorbisgain` as calculating ReplayGain values for named Ogg Vorbis input files and writing the result back as tags. Common modes include album gain with `-a`, recursive processing with `-r`, skipping already tagged files with `-f`, display-only mode with `-d`, cleaning tags with `-c`, and converting older ReplayGain tags with `-C`.

Typical users run it over album directories after ripping or encoding to Vorbis, then let compatible players choose track-gain or album-gain playback. Non-supporting players still play the files because the audio data is unchanged.

パッケージ好きにとっての重要性

VorbisGain is package-nerd significant as a codec-specific metadata tool: it is not a general audio editor, but the exact utility you want when maintaining an old-school Ogg Vorbis collection with ReplayGain-aware players.

タイムライン

• 2001: ReplayGain emerged as a proposed loudness-normalization technique for formats including Ogg Vorbis.
• 2000s: VorbisGain circulated as the Ogg Vorbis-specific command-line scanner and tag writer.
• Current package era: Distribution packages continue to ship VorbisGain as a small utility for non-destructive ReplayGain tagging.

Related projects

• ReplayGain is the loudness-normalization method VorbisGain implements.
• vorbis-tools, libvorbis, mp3gain, metaflac, foobar2000, and Quod Libet are adjacent tools or consumers in the same audio metadata ecosystem.

ソース

• https://linux.die.net/man/1/vorbisgain
• https://packages.debian.org/sid/sound/vorbisgain
• https://sjeng.org/vorbisgain.html
• https://wiki.hydrogenaudio.org/index.php/ReplayGain