May 5, 2005
Noise Reduction Headphones
Sony recently introduced the MDR-NC50 noise cancelling headphones, which are able to detect low frequency white noise (20-1500hz) from jet engines, subway trains or server fans and create an opposite sound wave that cancels out those noises. According to Sony, these headphones can reduce unwanted noise by up to 80 percent. At the 300hz level the noise reduction is said to be at 14db.