Whether you are in an airplane or in a crowded cafe, the fish that supports the noise cancellation feature protects you from everything around you almost, which bring peace and calm to your ears. But, how to actually work this feature?
You may have seen many headsets that support noise cancellation on a large scale in the last few years. But did you know that the idea already back to 1978? When Professor Amar Bose of MIT trip from Zurich to Boston and became frustrated because the noise of the plane and the loud music is driving him crazy on the plane.
Professor Amar founded Bose rich from the definition, which is famous for headphones, noise cancellation, where the idea was to arrange that all the sound is transmitted in wave form, and also allow sound waves and each wave is different from the other, so that here the wave or the sound of say hello, a wave to say goodbye, and if you run all the two at the same time, you’ll get a phenomenon called the constructive interference.
This causes the constructive interference to amplify the sound to make the general composition louder, and it’s the same phenomenon that you get in a crowded restaurant. With the entry of more people and start talking, be the sound total that you hear the top voice. But, what if instead of the sound becomes higher, that becomes more quiet?
This is what allows the interference is destructive, and that’s exactly what you’re doing noise-cancelling headphones that we have.
Let’s go back to those sound waves. Each wave has a crest and a valley, and contains noise-cancelling headphones the microphone built its own. When he discovers the microphone sound waves, the speaker creates another wave completely reversible. So for each Valley and peak, and each peak and valley, so that the waves cancel each other, and followed by a flat line, it’s the calm we get when wearing the headset..
Now, if you have used the headset supports noise cancellation before, it is likely you noticed that they don’t cancel all noise, so that some of it sometimes, and that’s because the technique works best in environments with noise and static, and this is the reason that headphones with a noise cancelling works best in places like airplanes or train cars compared to the outdoors.