sox

Sound eXchange: play, record and convert audio files. Audio formats are identified by the extension.

• Merge two audio files into one:

sox -m {{input_audiofile1}} {{input_audiofile2}} {{output_audiofile}}

• Trim an audio file to the specified times:

sox {{input_audiofile}} {{output_audiofile}} trim {{start}} {{end}}

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

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

• Reverse and save an audio file:

sox {{input_audiofile}} {{output_audiofile}} reverse

• Print statistical data of an audio file:

sox {{input_audiofile}} -n stat

• Increase the volume of an audio file by 2x:

sox -v 2.0 {{input_audiofile}} {{output_audiofile}}