SoX is the swiss army knife of sound processing.
 .
 This package contains the SoX library which enables to convert various formats
 of computer audio files in to other formats. It also allows you to apply
 various effects to sound files.
 .
 Any format support requires at least libsox-fmt-base.
 Sound card I/O requires libsox-fmt-alsa, libsox-fmt-ao, libsox-fmt-oss or
 libsox-fmt-pulse.