On the face of it, producing a set of noise cancelling headphones should be a relatively straightforward project. But as [Pete Lewis] found out, things are not always as they seem. The result is a … ...

How Noise-Cancelling Headphones Work. Every wearer, whether of headphones or earbuds, receives a bit of passive attenuation in noise reduction simply by wearing the device: drop-in noise gets blocked.

Cover Your Wall in MIT’s New Paper Thin Speakers to Turn Your Bedroom Into a Noise Cancelling Oasis ... high-quality sound, even when bonded to a rigid surface like a wall.

EPFL researchers have developed a 100% effective, ultra-thin active noise cancelling system that uses an ionized air plasma propulsion system instead of speakers. A 17-mm-thick (0.6-in) layer can ...