CMIS 310:
There is a subdirectory (folder) with your name on it.  Use it for this experiment.
cd yourlastname

double-click the Volume Control, make sure PCM is not muted and not zeroed.

sox existingFile.wav [options] newFile.{wav|ogg}
where options are:  -c 1     for mono
                    -b       for 8-bit sample
                    -r 8000  for 8000 samples per second (8KHz)


Download the talk15secs.wav and the startup.wav files from the clas web site.

Recreate the various other combinations of 8000 Hz, 8-bit, mono and /or
Ogg compressed files.
Do some experimenting with the effects that sox provides, eg. reverb, fade,
echo, flange, vibro. The play command can do some of these on the fly:
play talk15secs.wav reverb 1 1000 100
                    stretch  {2|.5}
                    speed  {2|.5}
                    vibro 20 1
                    pitch 1000
  combos of them too.

http://cf.ccmr.cornell.edu/cgi-bin/w3mman2html.cgi?sox(1)
has a better man page.

http://sox.sourceforge.net
is the homepage of sox