Reward the behavior you want! When he's being quiet, tell him what a good bird he is! Birds are intelligent. It won't take him long to realize that he has to be quiet in order to get the attention he wants.He does it at the worst times, too. Sometimes for 5 or 10 minutes. These are the times I'd love to go in and pick him up so he'll be quiet, but I don't, because I don't want to give him attention for it.
If his noise is contact calls, respond but respond quietly. Perhaps moving his cage to a location where he has a better view of what's going on might help. This is assuming you have room available to do it.
Alex (BFA) simply goes through Amazon overload every day at just about the same time. It lasts a short time and she's done. That's one of the few behaviors I haven't been able to modify!