What to call out loudly?

Please give me some context! What are you trying to achieve by calling out loudly?

For example, are you:

* Trying to get someone's attention? Then you might call their name or say something like "Excuse me!"

* Announcing something important? You might call out a warning, a time, or a location.

* Expressing excitement or joy? You might call out a cheer, a slogan, or a song.

Tell me more about your situation, and I can give you some more specific suggestions!