It would be cool if PNR could include a (multiple/freehand) bandpass filter. I finetune PNR in Wavelab right now by adding a bandpass filter in the effect chain in front of Stereotool so it only analyzes the high/low frequencies where usually the noise/humming is.
Example of bandpass before Stereotool PNR to remove noise:
Example of bandpass before Stereotool PNR to remove humming:
I have here 15 year old MP3s made from tape recordings made from vinyl that are now 100% clear of humming/noise but everything else of the music is untouched by PNR thanks to the bandpass filter.
