hum, thrumming, clacking, whooshing, whirling, droning, clanking, beeping, crackle, chirrup, vibrating, pulsing, clanging, fluttering, chirping, throb, clattering, rumbling, tinkling, screeching, pattering, hiss, buzzes, flickering, gurgle, whizzing, chattering, strums, flapping, purr, screams, burbling, murmuring, palpitating, wafting, eddying, thwacking, twitching, gabble, bleats, jittering, revving, deafening, clinks, blare, thudding, squawks, cranked, alit, clomp, rustling, uncurling, whine, pinging, shrilling, gleaming, gazes, shrieking, snuffling, oinking, quivered, stilled, glistening, squealing, moans, clopping, muffled, wail, flit, cackling, knobbed, cawing, glinted, trundles, spooling, chiming, puttering, whinnies, cooing, pulsated, churning, juddering, blipping, rasps, tootled, blinking, pedaling, spluttering, defibrillating, bobbing, flitter, perpetual motion, deadened, warbling, gibbering, unmoving, undulate, beetling, creaks, twinkling, whisper, chugging, whirr, clatter, humming, whir, hissing, crackling, thumping, clicking, whistling, ringing, buzz, drumming, rattling, throbbing, hammering

sound

noisy, whir, whirr