Tested a Little Patch on the carpet, and went well so the whole thing went. but here's a comparison
https://i.imgur.com/FZXQqdH.jpg
https://i.imgur.com/gq9nknB.jpg
https://i.imgur.com/01aocDT.jpg
https://i.imgur.com/r5JTuX2.jpg
https://i.imgur.com/YG9BZXB.jpg
https://i.imgur.com/BtIWqrn.jpg
also, sound dampened the floor
https://i.imgur.com/SzPiW4G.jpg