How to Remove Background Noise • iZotope DeNoise Tutorial
How do you get rid of hiss in your audio without destroying the speech? iZotope DeNoise is my favorite solution.
When you record audio for your podcast or video production, there is almost always some kind of noise floor. In many cases, you may not want any of this noise, often referred to as hiss, to be heard in your audio.
There are free solutions in Audacity, Audition (which has become almost as good as DeNoise) and other apps with noise reduction plugins but nothing has done a better job for me as iZotope's DeNoise https://podhelp.me/izRXEl7BH and it doesn't have to be expensive.
It can remove heavy amounts of background noise (refrigerators, fans, street noise, etc.) with almost no degradation of the dialog. At worse, the recorded audio can become "muddy" stripping out some of the higher frequencies however I this can be corrected for with an EQ (shown in the video).
To use DeNoise to it's fullest, select your noise floor, activate the Adaptive Mode, loop that section of audio so it can play while you listen with headphones to the reduction in noise as you increase the Noise Reduction slider until the noise is low enough of eliminated.
Deselect Adaptive Mode and your noise sample and apply to the entire file. That's it. Enjoy your audio that sounds like it was recorded in a studio. Well if you have a decent mic and room treatment.