Headphones have been around for decades and has experienced tremendous evolution. Part of the evolution are noise cancelling headphones. These are headphones with special technology that helps you keep external noise out of the headphone without increasing volume of what you are listening to. Check here for our comprehensive review of the best noise cancelling headphones.

It is interesting to know how the Active Noise Cancelling technology was put together. The short clip below explains how noise cancellation works in headphones.

How Noise Cancellation in Headphones Work