I sometimes use one or more of the following:
- normalization
- compression
- volume envelope
- high / low pass filter
- parametric EQ
- a good dither plug-in
Which (one or more) of the above one uses, how, and to what degree, depends entirely on the source material. Lots of trial and error involved, especially during the learning curve (I'm still in the early learning curve on parametric EQ). Try to remember less is definitely more: too much processing will make recordings sound worse, even if they might seem better initially. I know, I've had my fair share. Fortunately, I keep all my unedited, original masters.
Audition has an excellent Help file. Use it, experiment, listen, repeat ad nauseum, and try to remember less is more.
Also, make sure you understand Audition's configuration and workflow. You should perform all processing - whether the source file is 16- or 24-bit - in the 32bfp realm and
leave the data in 32bfp until all edits are complete. (Sorry, I forget the exact configuration option...but something like convert data to 32bfp when opening the file.) For 24-bit files, I believe Audition defaults to opening the file as 32bfp, so all edits are within the 32bfp realm and remain 32bfp until you dither. But 16-bit files depend on the configuration I noted above...and without the configuration set properly, Audition still will edit in 32bfp, but then - as part of the processing - immediately dither back to 16-bit, which you don't want to do if applying more than one edit to any one section (or all) of the file. A bit of discussion on
Audition and workflow here.
Couple threads on post-processing in general:
http://taperssection.com/index.php/topic,53916.0.htmlhttp://taperssection.com/index.php/topic,81793.0.htmlhttp://taperssection.com/index.php/topic,88217.0.htmlFor specific operations, best bet is to consult Audition's Help file and/or search for the keyword (e.g. normalize, normalization, compression, etc.) in the Ask The Tapers or Computer Recording forums.