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There are so many times that you wish you could shut out all the surrounding noise and concentrate on the task at hand. Well, now there is an option by getting you Noise cancelling ear buds. The use of technology in trying to block out external noise is well known. One needs to have a signal generator to stop all the noise signals that emit from reaching you. What you also need is a power format in the form of a battery. The kind that you encounter in an airplane but at the same time you would be able to hear if someone were to address you directly. The noise canceling ear buds have certainly caught on the fancy of the buyers for the effective way in which it can help them to concentrate on the task on hand.