Here's website that gives a good idea how to do it, I noticed in PC World last week there are quite a few programmes available to do a "professional" job, removing crackles, hiss etc. might be worth considering one of them....alB click here
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?