wav file enhancement?

[curious_bob]

I have some lectures recorded via my mp3 player.

I would like to clean up the sound of these recordings i.e. make them sound for natural. Is there a quick, easy way to do this?
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[JPMRaptor]

I don't know if there's a "quick and easy way", but take a look at Audacity. It's a pretty powerful open source sound editor. It may have a plugin to do what you're looking for.
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