Too much background noise!

i am making a video of a party for someone and i would go around asking people to say a message to the camera for the "birthday boy". Some people are old and did not speak very well so i have hope for their clips, but in general there is just too much background noise. i know nothing about audio filters so if someone can enlighten me as to which one(s) i should use i would be oh so grateful
-Josh

As also said in [this thread|http://discussions.apple.com/thread.jspa?threadID=1181625&tstart=200]whe n it comes to sound you really need to get it right on set. I'm not being pessimistic, trying to remove BG noise will inevitably affect the entire audio, speakers voice will change, sound weird and applying  filters could just make things worst!  
However do have a go with an EQ filter to see by yourself. It is a non destructive action!
Also one thing you can do is make sure the volume doesn't exceed -6 db.
gig

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