Designed or functioning to reduce, cancel out, or counteract unwanted sound or noise.
From anti- (against) + noise (from Old French noise meaning 'quarrel' or 'disturbance'). Modern term formed to describe technology that opposes noise.
Active noise-cancellation technology (like in fancy headphones) uses antinoise—it creates sound waves that are exact opposites of unwanted noise, so they cancel each other out in a physics trick called destructive interference!
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