There is software to do this. You can even configure your streaming / recording tool of choice to use that processed audio directly.
For the first couple of video courses I made my work flow was:
- Open REAPER (a software DAW with a business model like Sublime Text)
- Create and save a noise gate sample based on my specific room noise using its "ReaFIR" VST plugin until it was good
- Use a piece of software (ASIO Link Pro) to act as a virtual audio switch
- Open my video recording tool of choice (Camtasia)
- Configure Camtasia's microphone to be a virtual device that ASIO Link Pro created on my system
So now the end result is the audio being recorded live is already processed by REAPER and has no background noise. I also added in effects like a compressor and EQ too to offset my very thin microphone at the time. Totally seamless with no latency issues. You could do the same thing with OBS but OBS is even easier since you can directly use VST plugins so you don't even need REAPER or ASIO Link Pro running. You can download REAPER's VSTs separately.
Nowadays I just use hardware to do the same thing in real time so I don't need to think about it and I have flexibility in the recording tools I use, although the above approach works fine once you have it all configured. You would just open REAPER before your recording tool and it was ready to go.
Personally I would never go back to editing in post production for recording voices with a microphone. The amount of time the above saves is massive because it's all done on the fly with zero human intervention once it's set up. There's no complex import / export / import flow needed or fiddling with things for every recording.
For the first couple of video courses I made my work flow was:
- Open REAPER (a software DAW with a business model like Sublime Text)
- Create and save a noise gate sample based on my specific room noise using its "ReaFIR" VST plugin until it was good
- Use a piece of software (ASIO Link Pro) to act as a virtual audio switch
- Open my video recording tool of choice (Camtasia)
- Configure Camtasia's microphone to be a virtual device that ASIO Link Pro created on my system
So now the end result is the audio being recorded live is already processed by REAPER and has no background noise. I also added in effects like a compressor and EQ too to offset my very thin microphone at the time. Totally seamless with no latency issues. You could do the same thing with OBS but OBS is even easier since you can directly use VST plugins so you don't even need REAPER or ASIO Link Pro running. You can download REAPER's VSTs separately.
Nowadays I just use hardware to do the same thing in real time so I don't need to think about it and I have flexibility in the recording tools I use, although the above approach works fine once you have it all configured. You would just open REAPER before your recording tool and it was ready to go.
Personally I would never go back to editing in post production for recording voices with a microphone. The amount of time the above saves is massive because it's all done on the fly with zero human intervention once it's set up. There's no complex import / export / import flow needed or fiddling with things for every recording.