Nouns

(n)blare, blaring, cacophony, clamor, dina loud harsh or strident noise
(n)clamor, clamoring, clamour, clamouring, hue and cryloud and persistent outcry from many people“he ignored the clamor of the crowd”

Verbs

(v)clamor, clamourmake loud demands“he clamored for justice and tolerance”
(v)clamor, clamourutter or proclaim insistently and noisily“The delegates clamored their disappointment”
(v)clamorcompel someone to do something by insistent clamoring“They clamored the mayor into building a new park”