![]() ![]() They applied the same principle found in noise cancelling headphones: use a microphone to pick up incoming soundwaves, then send out an out-of-phase wave to cancel them out. Now, researchers at Nanyang Technological University in Singapore have found a solution. If you want to let in light, to say nothing of air, you will also be letting in sound. However thick the walls, though, windows are the weak link. If the world must be cacophonous, our homes and offices, at least, should be a refuge from the clangor. Image: Nanyang Technological University in Singapore Turning Down the Volume on the Open Window New noise-cancelling device mounted onto window grilles can reduce up to 50 percent of noise from the surrounding environment.
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