I have a Cockatoo, so she likes to make a lot of noise !
When i first got her, she was quiet, but after a few days very noisy, we read in books and on internet to put a cloth over the cage when she was noisy. Then ignore her for 5 minutes then remove it, this proved to be bad advice, as she quickly found it to be a game.
After speeking to a guy, that breeds African greys, he said, ignore noise, and talk and praise when she was quiet.
within 2 days she was much better, and still is, obviously we get a few outbursts, but it is expected.
One word of warning though, you must balance attention and non attention carefully.
It is all too easy to ignore a quiet bird, because it is already quiet, if you do this, the bird will learn when it is noisy then shortly after quiet, you come to them and talk and praise them, therefore if i make noise i get attention.
Yes hard to balance, but worth it.
Try to talk to your bird often especially when quiet
