I'd like to have something else but for live calls: a process that takes two audio inputs and "subtracts" the noise from one input from the other. My use case would be to have two dynamic microphones, one directed at the window and one that I'm using for a conference call. I'm assuming having two inputs should make the process easier for real time (20ms?) processing and might require less compute.

If such process can output a clear sound, I could chain it with Blackhole and have it and use the processed clear signal as an input for the call.