NAME

       PDL::Demos::Sound - play PDL-generated sounds

DESCRIPTION

       This module is intended to be auto-discovered by the mechanisms of PDL::Demos.  That
       module also defines our interface.

       The demo creates some simple sound waves (a scale and a chord) and pipes them to an
       external sound player program.  It knows how to invoke "aplay" (from alsa-utils), "play"
       and "sox" (the latter two from SoX - Sound eXchange).  All of these are available as
       packages in Linux distributions, SoX is also available from
       <https://sourceforge.net/projects/sox/> for Microsoft Windows and MacOS.

       If no suitable player is discovered, the demo does not die but shows an explanation where
       to obtain them.