How to Remove Background Noise From Video Using Audacity
Tips for Downloading Audacity
Makes sure you download Audacity from the sourceforge web site. This is the official site to download Audacity. Other sites are likely to do other annoying things like change your search engine and add toolbars.
http://audacity.sourceforge.net/
When creating this video, I downloaded the most recent version of Audacity. It has a new noise tool. I was getting strange musical artifacts with the noise reduction tool in the newest version of audacity, particularly when I had a considerable amount of background noise. The current version, at the time I am writing this tip sheet, is 2.1. Currently, I would recommend the older version of Audacity for noise removal. I used 2.0.6 for the tutorial.
You can find older versions of Audacity here:
http://sourceforge.net/projects/audac...
As of 4/5/15 I recommend this version for windows:
audacity-win-2.0.6.exe
I have not used Audacity on the Mac and perhaps the new version works just fine. If you are getting artifacts, try this version:
audacity-macosx-ub-2.0.6.dmg
If Audacity comes out with a new version, give it a try. Maybe they will fix the problem. Also the newer version did work pretty well with files that had minimal background noise.