Amazon patents noise-canceling headphones that let you hear the important stuff around you http://newzposts.com/amazon-patents-noise-canceling-headphones-that-let-you-hear-the-important-stuff-around-you/
Noise-canceling headphones are great for tuning out the din around you when you just want to focus on listening to music or enjoy some peace and quiet. Unfortunately, they also mute sounds that you might need to hear – like someone calling your name. Amazon has a pretty cool idea for solving that problem. Earlier
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