When during processing is it best to process noise reduction?
I am processing a mono music recording from 1977. There a droning noise throughout at about -100db that I need to remove. I have been experimenting with the parameters. 40% NR reduced by 20 % is the ballpark.
This is an outline of the steps that need to be done
original Mono Audio
remove 15731 hz 30 db spike
convert to Stereo
Apply eq match
adjust L R center pan and alignment
correct final volume
remove 60 hx hum
noise reduction
Need a second opinion. please review steps above of what needs to be done, advise best order, and are the NR parameters ok.
this is the sample (the first second or so)