资料来源 : Free On-Line Dictionary of Computing

MPEG-2 Low Sampling Frequencies Extention
     
         (MPEG-2 LSF)
        An extension of {MPEG-2}, mostly used with {MPEG-2 audio layer
        3} because the aim was medium quality at low bit rates, not
        lower sampling frequencies.
     
        (2001-12-04)