1) Alarming sound 2) Be brassy 3) Be loud, like a radio 4) Be on high 5) Be too audible 6) Bit of noise pollution 7) Blaring 8) Blast a trumpet 9) Blast loudly 10) Boom box sound 11) Boombox sound 12) Brass section sound 13) Brassy blast 14) Brassy horn blast 15) Brassy sound 16) Brilliance 17) Bugle blast 1) Beep 2) Cacophony 3) Clamor 4) Din 5) Loudness 6) Sound 
• (n.) The harsh noise of a trumpet; a loud and somewhat harsh noise, like the blast of a trumpet; a roar or bellowing. • (v. t.) To cause to sound like the blare of a trumpet; to proclaim loudly. • (v. i.) To sound loudly and somewhat harshly.
Blare intransitive verb [ imperfect & past participle Blared ; present participle & verbal noun Blaring .] [ Middle English blaren , bloren , to cry, woop; confer German plärren to bleat, Dutch blaren to ble...Blare noun The harsh noise of a trumpet; a loud and somewhat harsh noise, like the blast of a trumpet; a roar or bellowing. « With blare of bugle, clamor of men. Tennyson. » « His ears are stunned with the thunder's blare . J. R. Drake. » Blare transitive verb To cause to sound like the blare of a trumpet; to proclaim loudly. « To blare its own interpretation. Tennyson. » 
[n] - a loud harsh or strident noise
blaring noun a loud harsh or strident noise
[SAT terms] make a strident sound make a loud noise