This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American
After doing a lot of plane travel with the annoying drone of the engines, Joanne Manaster found herself in need of some noise cancelling headphones. According to her post on PsiVid:
“Although I understand the physics (and accompanying math-specifically trigonometry) of how the earphones work, I was uncertain if the technology was sophisticated enough to cancel ambient noise for the average flyer (at a reasonable price).”
So just how do they work? James May at HeadSqueeze has a great video to explain it:
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