Noise cancelling headphones are really a great way to block out unwanted noise around your environment. Will they completely eliminate noise? No not completely but they will remove it enough to give you a little peace and quiet if you want it. Especially on those long airplane trips or your daily commute on the bus.
These headphones use noise cancellation technology. It works by using battery powered headphones with small microphones that will record and reverse sound frequencies. In return the reverse signal will then block off the noise that is surrounding the listener.
Again let me state that there are no pair of headphones that will completely eliminate noise. Most headphones are only designed to lessen external noise from your environment. So look for quality noise reduction when choosing a set. Also these headphones have a battery compartment built into the cables. You might find this a little bulky. If so then look for some that have the batteries actually built into the headphone unit.
Price is always a factor when considering noise reduction headphones. They can range in price from $20 to $200. Remember that you always get what you pay for in a good set of headphones. Do research before you consider purchasing and read reviews and articles to get a sense of what feature are available and if they are for you. Most if not all retail outlets offer a return policy from 15 to 30 days. So try them out and make sure they are the best headphones for you.
Remember sometimes silence is golden.Source : Collect