You might be resigned to wearing a pair of headphones all day to block out the sounds of noisy neighbors or other distractions, but researchers at MIT have developed a paper-thin speaker that can be applied to almost any surface like wallpaper, turning objects like walls into giant noise-cancelling speakers.
source https://gizmodo.com/mit-invents-ultra-thin-speakers-wall-mounted-noise-canc-1848842742
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