Ever needed to concentrate on something you are listening to, but the environment around you just could not let you? You probably thought of, or even acquainted yourself with, noise cancelling headphones. But do you know how they work? Or is it just a phenomenon we should take as it is?
Probably this inquiry should base on the difference between the normal headphones and the noise-cancelling pieces.
One key note to take is that these noise reducing headphones are categorized in two, depending on their work; passive and active.
Also Read: These are the different types of Headphones
Passive Noise Cancelling headphones
Typically, any type of head-phones can cancel noise passively because the materials in them are capable of blocking out external sound waves, especially if they come in at higher frequencies.
They are closed-back and sealed to reduce noise passively by physically covering the listener’s ears to help block out external noises.
They have an in-ear design that forms an acoustic seal that helps to block background noise and allow for more accuracy at lower volume levels.
