mpeg-2 lsf

from The Free On-line Dictionary of Computing (8 July 2008)

MPEG-2 Low Sampling Frequencies Extention
MPEG-2 LSF

   <compression, standard, algorithm, file format> (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)