iZotope RX
> An insanely powerful piece of software that should be in your toolbox whether you’re into remixing or not, RX is unsurpassed in the once-unthinkable things it can do to audio. Its machine-learned noise reduction algorithms can bring dusty old recordings into the light again, and that’s just one of its many processors. Try algorithms such as Deconstruct to split any signal into its constituent noise and tonal components, then separate these two elements into something completely unexpected. Experiment: mess with settings and dial in extreme controls to use its power to your advantage and see what you can come up with.