S.A.C.
                        Shafer's Audio Compresson
							   version 4.0
                                 01/21/93

   This archive should contain the following files:
        SACKIT.TTP
        UNSACK.TTP
        SACKDOC.TXT

   I wrote this simple lossy compression program because all of my sound
samples were taking up too much disk space.  In addition, it was 
infeasable to trade samples over the modem because they were too long.

   Lossy compression was used because audio samples don't lend themselves
to traditional types of compression because the data does not exhibit
much simularity. However, I highly reccomend standard compression (LZH)
after using the Sacker, since the data will be in a more compressable
format.

   To use the Sackit program, double-click on SACKIT40.TTP and give it 
the following parameters:
         inputfile.SPL outputfile.SAC (bits)

   The inputfile is the audio sample to be compressed and the output file
is your resulting Sacked file.  The bit parameter is sound resolution
that you want retained in the sacked file.  The range is from 3 to 7
bits with the default (if no bits are specified) being 4.

   The Unsack program is also easy to use.  Its parameters are as follows:
         inputfile.SAC outputfile.SPL

   Where inputfile is the compressed audio, and outputfile is the name
of your newly uncompressed sample.


   Like I said, this is a pretty simple program that just strips off bits
in order to achieve lossy compression, but it is effective.  If anyone 
wants the source code it is available.  I invite anyone to improve the
program or to write a shell for it.

   I can be reached on Delphi (member JOELSHAFER) for comments or requests
for the 'C' source code or you can write me at
                            Joel Shafer
                            3109 Gwendolyn
                            Edmond, OK 73034

P.S.  Make sure the disk that you are expanding to has plenty of room or
      your sample will be cut short.  Remember, that a 4 bit compression 
      expands into 8 bits (twice the size) so you will need plenty of room!