If you want to relax and listen to nice music or an audio book you normally have to find a quiet place where you will be completely undisturbed and/or you will need good quality headphones to block surrounding noise. The type of headphones people use depends mostly on their lifestyle and budget. At home, almost any good headphones will do. They can allow you to listen to music while the kids romp around in the background or enjoy a late-night movie without disturbing your sleeping spouse. The physical design of some headphones and earphones can help block outside noise in a passive way. Active noise-canceling models use a microphone and electronic circuit as well as a speaker. All sounds have a wave pattern, which the microphone picks up. Noise-cancelling headphones produce an exactly opposite sound wave, and the two cancel each other out. This works best in over-the-ear or earbud headphones. Here you can find some of the most recommendable models.