sox

Play, write, read, convert audio signals using Sox.

This is a wrapper to Sox the Sound Exchanger http://sox.sourceforge.net/ which lets you play, write, read and convert audio signals in various formats, resolutions, and numbers of channels.

The functions call sox commands via the shell, that is, the sox and play executables must be installed and in the path to the executables must be set.

In the past this was part of the synthesizer package.