SOME ACTORS AND CHARACTERS BELIEVE THAT THE BEST WAY TO TALK IS TO TALK LOUDLY! THEY DON'T RESTRICT YELLING TO WHEN THEY ARE ANGRY, UPSET OR AT THE BOTTOM OF A WELL CALLING FOR HELP -- THEY SHOUT ALL THE TIME!!!
DIFFERS SLIGHTLY FROM CHEWING THE SCENERY IN THAT IT'S NOT THE ACTING THAT'S CRANKED UP TO MAXIMUM — JUST THE VOLUME!
SOME- Ahem. Sorry about that. Some categories of television shows seem more prone to this type of acting than others:
Programs going for dark and edgy, where the constant shouting is supposed to reinforce how permanently angry/edgy/completely bonkers the character is. Police procedurals in particular are prone to this.
Children's programs with young actors who constantly shout at each other and EMPHASIZE every WORD they THINK is IMPORTANT! — the audio equivalent of Bold Inflation.
Adult presenters on children's TV who assume their young Viewers Are Morons.
The occasional infomercial, especially if it's by Billy Mays.
Or someone else trying to be Billy Mays.
Or the UK's equivalent, Barry Scott.
More rare than the above: An individual is just louder than most other people, even in series, perhaps because they are hard of hearing.
BRIAN BLESSED! So loud he deserves his own category.
He has his own category.
He IS his own category.
He is the category.
"... If they're not laughing, it's not comedy. Well either that, or you're just not SPEAKING LOUDLY ENOUGH!"
In extreme circumstances, a character will become so loud that the show can be watched only with the volume turned down, making it a problem when the quieter characters speak. In the worst case scenario, the character will become such a headache that the viewer might be put off watching. These are the shows that you can't have on in the background when you're talking to someone; you'll be drowned out.
Can be justified if the actor in question has had a stage career, where voice projection is critical, or if the show is being taped in front of an audience where people in the back row might otherwise have trouble hearing what's happening on stage. However, the fact that many shows with an audience manage to achieve an "indoor voice" suggest that the trope can be avoided.
See also:
Caps Lock, effectively the written form of this.
Cute, but Cacophonic, when characters you wouldn't expect are this, hence it's often used in comedies.
Gale-Force Sound, where the yelling is so loud, it actually causes strong winds.
Hot-Blooded, where a character is like this due to the passion in his or her heart.
Large Ham, who probably lacks an indoor voice, but gets away with it by virtue of sheer charisma.
Make Me Wanna Shout, where someone with No Indoor Voice uses volume as a weapon (or has to deal with people who take advantage of this).
Noisy Duck, when ducks may lack an indoor voice.
Punctuated! For! Emphasis!, where, in addition to shouting, the person also adds an exclamation mark after each word.
Screaming Warrior, for a character who deliberately speaks this way in order to appear intimidating.
Staging the Eavesdrop, when someone intentionally says something loudly with the explicit intent of getting someone to eavesdrop on it.
Suddenly Shouting, which uses a deliberate contrast between normal volume (or quietness) and shouting FOR MAXIMUM IMPACT!
Volumetric Mouth, the usual secondary trait of cartoon characters who yell, where their mouth scales up considerably to match the volume.
