You can have noiseless streams using Krisp with OBS Studio. All you need is a 2-sided configuration.
- Select Krisp Microphone to work in OBS Studio. For that, go to Settings >>> Audio and select Krisp Microphone as Mic/Auxilary Audio.
Click Apply, then click OK.
- In the Krisp settings, pick the physical microphone you wish to use. Make sure that the Remove Noise toggle is turned on.
- Start your noiseless stream.
Note: The "Not used" indicator will be switched to "Used by OBS Studio" when there is an ongoing stream.