Source : WordNet®

audio
     n 1: the audible part of a transmitted signal; "they always raise
          the audio for commercials" [syn: {sound}]
     2: an audible acoustic wave frequency [syn: {audio frequency}]
     3: the sound elements of television

Source : Free On-Line Dictionary of Computing

audio
     
         Sound, one component of {multimedia}.  Computers
        (and audio compact discs and digital audio tape) work with
        {digital audio}, in contrast to vinyl disks or analogue tape.
     
        (1999-07-30)