I need help on how to remove background noise from an audio. I made a video, to be uploaded on YouTube just for me to realize there is a very weird noise in the background.
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I need help on how to remove background noise from an audio. I made a video, to be uploaded on YouTube just for me to realize there is a very weird noise in the background.
There are many tools that can successfully remove background noise. Most editing programs have simple ones that sample the noise and then act to remove it. They work well on hums and hisses, but may be less useful for more complex backgrounds, There are more advanced plugins that work very well, but they can be costly. The most comprehensive set of noise reduction tools that I use is iZotope’s RX 7 Advanced. I also have NR tools from Avid and Waves.
If it’s a constant noise that stays the same throughout the video here’s one way, with Cool Edit Pro or Adobe Audition. Find a section that should be quiet but contains the noise you want to remove. Select it then use noise reduction to get the noise floor. You can fiddle around with settings to remove the noise but what I do is use the function to remove everything but the noise. Then I copy the whole file to clipboard, undo noise reduction, then invert paste.
What that does is null the noise by mixing in an exactly opposite waveform of the undesired sound. Audio editing software other than Cool Edit Pro or Adobe Audition may not make this so easy, but if it has a way to reduce the audio to just the noise, a way to invert the audio (vertically, not reverse it end to end), and the ability to mix two files together, it can be done.
Reduce the audio to just the noise, invert and save to a different file. Undo the changes or reload the original. Mix the inverted noise file and save to another new file.