I have an 11 minute audio file that I am trying to reduce the noise for in Soundbooth. I've captured a noise print and run the noise reduction tool. The result is free of noise, but hasa hollow, metallic echo behind every word that makes it unusable. Difficult to describe. I used the noise reduction settings slider to make it less aggressive, but experienced the same results. Anything I can do to get rid of most of the noise but not add that other noise?