Okay, so we know who the loud people are. Sometimes its hard to deal with them yet to be around them. First, you must stand out of your circle of concern and ignore all of their rudeness for being loud, and just pretend you don't see them.
Step2
Be patient, because it can take work to establish within. You don't have to raise your voice or be loud. Be yourself, allow that person to speak on your level not theirs.
Step3
Try, thinking with a positive mindset toward that individual. Speak boldly with confidence and try to think positive things about the person, so that you won't be nervous or embarrassed.
Tips & Warnings
Be confident and do not be intimidated by anyone.
Know that you already have the final say so when approaching the loud person.