Sound editing is a very important aspect of field recording. I typically record 24/7 which necessarily means that the sound files are very large. The newest editions of sound editing software allows the user to review sound files both visually and audibly. After isolating sound clips they can then be filtered to eliminate extraneous noise.
The two biggest factors to remember with sound editing are:
1. The closer to the sound source the less filtering that is necessary.
2. The higher the quality of the recorder and microphone eliminates the need for sound manipulation.
Sound editors are so numerous that I can not list them all or try them all out to give a fair evaluation. The following is a list of the most popular brands, includes links to the products as well as forums that deal with using each specific editor.
Sound editors span the gamut from free to very expensive.
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Audacity
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