Noise reduction in sections of a track

Programming and Development General Audio Programming
14

https://forum.audacityteam.org/t/removing-really-bad-hum/43406/3

Also.

de-hum.ny (2.11 KB)
Audacity 3.0.2 has Tools > Nyquist Plugin Installer. After installation, you still have to Effect > Add/Remove Plugins to use it.

Koz