A few weeks ago, I tried doing this with the LADSPA version of RNNoise and ALSA, but couldn't get it to work reliably.

I have also experimented with NoiseTorch which routes the microphone through LADSPA using Pulseaudio but it didn't work reliably either. The biggest problem with this is that Pulseaudio will load one CPU thread 100% even when no audio input. This makes it a deal breaker for laptops.

I will definitely check this out. RNNoise is truly amazing tech, but it is not as accessible as I would like. The best use if it is in the Mumble client where it is an optional setting.

It is a shame Nvidia has taken over this space completely with RTX voice. RNNoise does a comparable job without the need for an Nvidia GPU. But I guess it is because RNNoise is just not as easy to setup.