SOX - Sound Exchange

Useful application to convert sound files between different formats.

From the web site:

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SoX is a sound file format converter for Unix and DOS PCs written by Lance Norskog and other invaluable contributors. It also does sample rate conversion and some sound effects. It's the swiss army knife of sound tools: the interface isn't great, but it does almost everything.

SoX uses file suffixes to determine the nature of a sound sample file. If it finds the suffix in its list, it uses the appropriate read or write handler to deal with that file. SoX has an auto-detect feature that attempts to figure out the nature of an unmarked sound sample. It works very well. This is the 'auto' file format.

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If your sox does not know how to handle .gsm - Files, you will have to download the latest version and recompile. Some distributions (like SuSE 9.0) do not include a sox compiled with GSM support :-(

• SoX is now maintained by a different author. There have been many improvements, as well. You can visit the new home page for SoX at http://sox.sourceforge.net/
• Old home page: http://www.spies.com/Sox/

See also

• WavePad: Sound recorder and batch converter
• GX::Transcoder: Freeware tool for sound conversion, including g729 and g723 formats
• On-line audio conversion by asteriskguru.com, including G729 and g723 formats
• Asterisk sound files - example on how to convert from .wav to .gsm with sox
• Asterisk audio convert module - Loadable module for Asterisk to convert Asterisk audio formats from the * CLI - very cool!