In a quiet room, however, it’s definitely noticeable. ![]() The effect creates a soft, “white” noise that’s essentially undetectable in the noisy airplane environment for which it’s designed. While ANR doesn’t create absolute silence, it dramatically reduces auditory stress and fatigue caused by engine noise. what’s that soft hissing noise in the background? Is something wrong with their brand-new headset?ĪNR (Active Noise Reduction, sometimes referred to as ANC, or Active Noise Cancellation) is a method of reducing or removing unwanted sound through the introduction of second sound wave that attenuates a portion of the first. It’s a tale as old as tech support: an excited customer receives their new Zulu headset, unboxes it, inserts the batteries, fits it on their head, and powers it up.
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