TURTLE BEACH SYSTEMS TBS-1100-01 Headphones HOW IT WORKS Each ear bud includes a built-in microphone with special circuitry that monitors noise in your listening environment and subtracts the signal from the sound fed into the ear bud diaphragms. The result is almost total silence as external background noise is eliminated from the music you're enjoying. The buds are perfect for silencing annoying background noise while you travel on airplanes or trains or even to quiet down noisy areas such as at the office, workplace or noisy room at home. Unlike