catflap.org Online Dictionary Query

  digital audio
       
           A sequence of discrete samples taken
          from a continuous sound ({audio) waveform.  Tens of thousands
          of samples are taken each second.  Each sample represents the
          intensity of the sound pressure wave at that instant.  Apart
          from the sampling frequency, the other parameter is the
          digital encoding of each sample including the number of bits
          used.  The encoding may be linear, logarithmic or mu-law.
       
          Digital audio is typically created by taking 16-bit samples
          over a spectrum of 44.1 thousand cycles per second (kHz), this
          means that CD quality sound requires 1.4 million bits of data
          per second.  Digital telephone systems use lower sample rates.
       
          Filename+extension:+.au+({Unix" rel="nofollow">Filename extension: .au ({Unix), .snd ({MS-DOS}, MS
          Windows).
       
          See also Audio IFF, MP3, wav.
       
          Usenet newsgroups: alt.binaries.sounds.*.
       
          A FAQ on audio file formats is available.  Part 1
          ftp://ftp.cwi.nl/pub/audio/AudioFormats.part1)" rel="nofollow">(ftp://ftp.cwi.nl/pub/audio/AudioFormats.part1), Part 2
          ftp://ftp.cwi.nl/pub/audio/AudioFormats.part2)" rel="nofollow">(ftp://ftp.cwi.nl/pub/audio/AudioFormats.part2).
       
          (1999-07-30)