Possible to get rid of "crackling" sound?

The “No-Infrasound” equalization can be imported into Audacity’s equalizer,
see the “.xml” attachment on this post … Improving an old recording - #15 by Trebor

However as the “curve” only has 2 points you may be quicker just drawing it yourself in the equalizer.

That equalization removes all the frequencies below about 30Hz , these are inaudible but should be removed before using effects with amplitude-threshold settings , like Pop-Mute, Compressors, Limiters etc for them to operate consistently throughout the track.