This is a tool for "boosting" sound files (e.g. before
writing to an audio CD). Try it on different types of
input sound (note: it can only read stereo files in
raw float format); I tested it with the following
commandline:

    maximizer   -verbose -lmode 0 \
              -smode 1 -limit 30000 -clpl1 30000   \
              -clpl2 32000 -scale 1.0 -freq2 600   \
              -r_lim a 1.0 -nband 9 -ovrlp 4       \
              -clpsn 0 4.0 -clpsn 1 2.0            \
              -clpsn 2 1.4 -clpsn 3 1.0            \
              -clpsn 4 0.7 -clpsn 5 1.0            \
              -clpsn 6 1.4 -clpsn 7 2.0            \
              -clpsn 8 4.0 -clpsn 9 8.0

The source code should compile on most operating systems
(it is written in C).