It worked great at the Apple demo at last year's NAB, but that's my only exposure to it. (I don't own a Mac.) Glad to hear that the SF9 solution is among the best...

[QUOTE=Jon Fairhurst;665804]If it's a repetitive noise, such as 60 Hz hum, the most effective way to get rid of it is to sample a noise-only segment, invert it, loop it and add it to the original in just the right amount. If there was any automatic or manual gain adjustment during recording, it will take some time to match that. You can then use a noise reduction program to get rid of the residual. QUOTE]

So when you say add it to the original do you mean layer it in the timeline or something else? I am very interested in this technique but not quite clear as to how to do it...I am really bad at getting good sound quality and need lots of help.

Thanks,

Jeff

Cool Edit Pro which is the ancestor of Adobe Audition will also effectively remove noise by the sampling and inversion function.

Yes. Simply invert the signal, add it to a new track on the timeline, adjust the timing so the phase is properly aligned, and mix the levels until the noise is cancels itself.

Best of luck!