Quote:
Originally Posted by AuntieDiluvian
That isn't very subtle at all - it tames the squeak, but also kills the attack pretty comprehensively
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Automated tools can be helpful, but many times such repair comes down to tediously fixing spots by hand to get the best result. For example, the aforementioned spectral editing can work really well for squeaks, but since every squeak is different, you have to tweak every one individually. Same with noise, crackles, sibilants or plosives, etc. etc. Some spectral editing here, a bit of dynamic compression there, a volume envelope adjustment there...
Bob Womack has posted some stories here about working magic on absolutely trashed audio, but it takes a lot of effort. As you've surmised, getting better takes in the first place saves a lot of work in the end.