Originally Posted by DannyL
There are a number of approaches to mics and sound isolation, but with modern technology, it is now possible to use a noise print to remove the undesired sounds by using a digital cleaning program. This is certainly not optimal, but could be worth a try. It gives one a whole new set of reasons to record room tone.
It's far from optimal, and the results will never be as open and clear sounding as the same dialog recorded without NR. With any NR, but most especially with any "fingerprint" type NR, it is very easy to improve the sound into a ruin. These tools are useful mostly when there is no alternative--other methods not reducing the noise enough, and non-replaceable audio as in a documentary. It is very foolish to go INTO a recording situation believing that those tools will save you. Have some respect for the actors--find them a good place to act.