HowTo: OBS Flatpak Pipewire microphone/speakers input, use NoiseTorch with OBS-Studio
discussion.fedoraproject.org
Problem The OBS Flatpak is the recommended way for installing on Linux. At least from the Terminal, finding and installing plugins is easy: flatpak search obsproject But to use NoiseTorch (COPR), which allows to mute background noise from audio input, you need to use Pipewire input. Pipewire allows way more things like this, processing an input stream (here the audio) in some app (here NoiseTorch), sending the output to another one (here OBS) etc. Cause OBS has no Pipewire input by default ...

OBS can use Pipewire for the mic and desktop sound inputs, but it is not yet packaged on Flathub.

Here is how to add it manually.