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What Are Noise Cancelling Headphones and How Do They Work?
It may seem like magic, but it's really just science. Active noise cancellation uses the science of sound to cut out the noise and make things quieter.
from NDTV Gadgets - Latest http://bit.ly/2PWvGG6
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from NDTV Gadgets - Latest http://bit.ly/2PWvGG6
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