yelling
loud
stentorian...having a loud or powerful voice
Shout.
Yell
You seem to be describing a "shout".
Yes, to exclaim is to shout with a loud voice.
The word "boisterous" is closest in meaning to stentorian, as both describe a loud and powerful sound or voice.
The amplitude to a wave is high.
Shocking Loud Voice was created on 2012-05-04.
Having a stentorian voice means having a loud, powerful, and commanding voice that is capable of carrying over great distances. This term is often used to describe someone who speaks with authority and presence.
The opposite of a soft voice is a loud voice.
loud