There’s a serious bug in the newly released Audacity 3.0.0. The Noise Gate doesn’t work! You read that correctly. I’ll say it again. The Noise Gate in Audacity 3.0.0 doesn’t work! The good news is Audacity version 3.0.1 will have the fix. In the meantime, here’s a link to the temporary fix. It’s a Nyquist plug-in that can be used until version 3.0.1 is out.
If you’re on Windows and need some help installing it, here’s the HELP PAGE.
Here’s a link to my course, Audacity Bootcamp: Beginner to Advanced.
Learn Audacity 