THere are several products that make it a LOT easier to clean up, emphasize, balance and color an audio file. One is called SoundSoap which takes out hisses, rumbles, augments voice. But most of what you want can be done with a Graphics Equalize which allows you to emphasize certain frequuencies and deemphasize others. There are manty different filters in any sound-editing program to improve the quality of a sound file, including reverb, noise-gates, echo, low-passs and high-pass filters, and so on byut they take a learning curve to understand and apply them.


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