Normalize an audio file (adjust volume to the maximum peak level, without clipping)

Sound eXchange: play, record and convert audio files.
Audio formats are identified by the extension.
More information: <http://sox.sourceforge.net>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

sox --norm {{input_audiofile}} {{output_audiofile}}

click the source code to copy install sox on any operating system with command-not-found.com