I was recording some voice, and after I reduce the noise from PC’s fans, I can hear an annoying ghostly voice in the “background”.
I used these settings for reduce : 29 , 0.81, 150, 0.15.
Can you provide me please some better settings to this sound?
I provided an original and a "ghosted’ sound sample.
That’s the way it is with noise reduction. There can be side-effects and sometimes, “the cure is worse than the disease.”
It’s one of those things you just have to experiment with to try to see if you can make in improvement. It works best when you have a constant low-level background noise… It works best when you don’t really need it. And even then, you may sometimes get side-effects.
Pros still record in soundproof studios with good equipment and good mic positioning. On-location movie dialog is re-recorded in the studio because even pro software can’t do miracles.
29dB noise reduction is too much. When you need reduction higher than about 18-20 or so, you should be making plans to decrease the noise in your room. Audacity doesn’t do noise reduction on your voice, just the time around your voice. This prevents science fiction voices, but in bad noise environments, it can give you noisy/echo voices in a quiet room.
This is the problem that kills USB microphones. You can only separate the microphone and the computer by one USB cable.