Headphones to block outside noise

It 'really annoying when trying to listen to music and there is too much noise in the background. The real problem is that the reason for everything, we have things like mp3 player and headphones, because we take our music wherever we want, want, and outside where the noise is! Cars, buses, trains, crowds, all of which are much less fun than you want to hear! But this is what you have to listen to when you insert the volume strong as to destroy the eardrums! (YouMay your music at full volume, but still.)

So if we can not avoid the noise as you want to get rid of it? It 's very interesting how this issue is through a headset manufacturers have been resolved. The two main methods are sound insulation and noise reduction.

sound insulation is easy. In practice this means that the headphones in order to isolate the ears or in the ear canal are worn by the noise, exhaust gases effectively. E 'is often used for ear, becausethey must sit firmly in your ears however, that the damping of the speaker means serves two purposes, to keep the provision as well as sound insulation. Often, but not as effective as you want, but usually is quite effective for cheaper headphones.

Elimination of noise on the other hand, is very clever, almost ingenious method. This implies a lack of knowledge about how sound works, but Should be easy to explain: The sound is basically a wave pattern in the air. What you dousually hears when listening to music, the music would wave, the wave of more outside noise. Noise-canceling headphones use a small microphone to pick up the headset outside swing and the sound wave in its negative adds, then, that music. So you have the music came less noise, more noise. The minus and plus the sound of the waves cancel each other, so that only the music!

It 's a long way to absolute selective hearing, but it works well forhours. And you will notice how much more pleasant music, without a baby crying in the background!