Active noise control is used in noise-cancelling headphones to decrease undesired background noise. This differs from passive headphones, which utilise methods like soundproofing to reduce background noise.
It is possible to listen to audio content without turning up the volume too much thanks to noise cancellation. In a noisy environment, like an aeroplane or a co-working space, it can also assist in improving sleep. Hearing important information like safety announcements is made easier in the aviation environment by noise-cancelling headphones, which increase the signal-to-noise ratio significantly more than passive noise attenuating headphones or no headphones. Noise-cancelling headphones can enhance listening to the point where it completely cancels out the effect of a concurrently distracting activity.
