Cats only get vocal when they want something from their human servants. If your cat gets a little too loud in the morning or at night, it’s up to you to train your cat to be quiet.
First, make sure your cat isn’t physically hurt to rule out its reason for howling. Next, discipline yourself respond to your cat only when you’re ready. If you jump up and feed your cat every time it howls, it will learn to howl all night and every morning.
Remember, even though you’re the human, the cat is really in charge, but you can train your cat to howl only when you’re ready to get up.