Plugins to improve poor quality pre-recorded audio?
I am running an Internet radio station, Rural Catholic Radio, using a lot of pre-recorded audio.
One of the problems that I continually face is the poor quality of the source material. In many cases, the audio was not recorded professionally and suffers from 'metallic-tunnel' sound (that's the best way of describing it), transient interference (high-pitched whistling, or hiss), or low-pitched rumble, or poor bass.
Now that I have our New Season up-and-running, I would like to redo some of the worst offenders. Unfortunately, I have little experience with plug-ins and would appreciate advice of which ones might be useful for correcting the worst offenders. Any suggestions?
I realize, that for the most part, little can be done to improve poor-quality vocals, but I'm hoping ...
Thanks & hoping,