Gadgetory

noise cancelling headphones mean you can chill out with your music without annoying external sound intruding on your listening pleasure but how does noise canceling technology work to begin with all headphones cancel out noise to some degree but when we talk about noise cancelling headphones we usually mean active noise canceling which electronically removes the sound of your surroundings here's how it works all sound is transmitted in waves described in terms of amplitude wavelength and frequency noise cancelling headphones effectively arrays external sounds by using a microphone hidden in the headphones that listens to surrounding noise then generates a sound wave that's out of phase which means it has the opposite shape and feeds that into your ears the two waves cancel out in a process called destructive interference which sees the wave generated by the headphones effectively acting as a sound eraser resulting in you hearing less of the outside world this sound erasing tech can also be found in some cars and it's been suggested it could one day keep the inside of your house quiet although the tech has been around for a while now however you'll still most likely to come across active noise cancellation in headphones these high-tech headphones aren't perfect they don't eliminate all noise and some people complain that they can hear the hiss of the noise canceling tech which is annoying in itself you also need to find some way of powering that extra technology so many noise cancelling headphones require batteries still if you travel a lot on planes or trains this clever sound erasing technology could make for a happier more relaxed audio experience