Two types of noises degrade the audio you shoot with your video: random noises like microphone clicks and pops, and consistent noises like white noise or air conditioning hum. This tutorial demonstrates how to remove both of them in Adobe Audition CS6.
Whenever you apply noise reduction you want to check for two things: First, you want to visually check that the fuzziness or bushiness around the center line is gone or mostly gone (see Figures 13 and 23 for before-and-after), and you want to make sure that you don't introduce any metallic noises into the spoken word or another artifact that you can hear pretty clearly. And I think we've done a pretty good job in this case, and that we're pretty much done.
When you're satisfied with your own noise reduction and audio cleanup efforts, click File > Save to save the file in Audition (Figure 24, below), and it automatically gets updated in Premiere Pro. You don't have to do anything else to update the file before you go back to editing your sequence in Premiere Pro.
It's important to note that the manual noise reduction that we just used works only on consistent noises. If you've got background noise like crowd noises or traffic noises, the audio cleanup techniques covered here not going to remove that. It's really got to be a consistent noise; otherwise, this filter won't work.
Overall, when you're shooting, as you know, the best option is to capture click- and noise-free audio. But when you don't, it's nice to know that these Audition tools can resolve these issues quickly and easily.
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