Announcing Check & Mate OTB

I'm curious since it's been many, many years since I played OTB: is it customary for club level players to announce "Check" or "Mate" when playing OTB ?
Would it be considered as trying to distract the opponent, and so should you just wait for them to make an illegal move and then call them on it ?
I take it for granted that at any titled level or serious competition it's not necessary as both players would most lekely be well aware of a "Check" for example, even if it was a discovered "Check".

If you're playing a beginner, you might consider announcing check or mate (it might be helpful to a beginner). But for anyone else, I wouldn't do it. Your opponent would probably be irritated at you.

When u play in tournaments ur supposed to holler it. Gotta make sure that even the people in the hall can hear it. It's standard practice.

In tournaments you will probably be penalized, or at least warned, for announcing check as it would be considered distracting your opponent.

In casual games, except among beginners, announcing check will likely be considered loutish.