loudThe sirens were loud.
noisyOur neighbours are very noisy.
deafeningThe music was deafening.
thunderousThunderous cheers erupted from the fans during the final seconds of the game.
explosiveThere was an explosive clap of thunder.
ear-piercingShe couldn't stand the children's ear-piercing screams.
ear-splittingThe explosions of the fireworks were ear-splitting.
shrillA shrill whistle sounded.
boomingBooming music kept us up all night.
(at) full blastThe TV was on full blast.