Noise cancelating headphones

Sometimes we drop a lot of our cash in a pair of noise cancelling headphones, but how much do we know about them. To understand this you don’t have to be master of physics, just the knowledge of your school will help.

As we all know sound travels in a form of a wave, which has crest (the upper most part) and a trough (the lower most part).

And when two identical wave meet the give ride to a stronger wave and this my friends is the job of two speaker to amplify the sound reaching you.

To cancel out sound your headphones uses more sound, when a Christ of a sound of one wave meet the trough of another wave of same frequency they cancel out then selves.

To do all this your headphones actually analyse the background noise and produce the anti-noise, but with all this hardware come some disadvantages, they are noose cancelling headphones are heavier than the normal once and they need power to do all this so they need batteries. Some of them don’t even work with batteries. There are many more factors that also elects the sound such as sound bleeding which is due to the cushion use.

Now you are little bit smatter than other people in noise cancelling headphones.

You can contact me in Facebook:-
http://facebook.com/techtomorrow