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Noise cancelling headphones are advanced audio devices designed to reduce or eliminate ambient noise from the surrounding environment, providing users with a more immersive and peaceful listening experience. These headphones utilize active noise cancellation (ANC) technology to detect and counteract external sounds, such as traffic noise, airplane engines, or office chatter, by generating anti-noise signals that cancel out the unwanted sound waves.

The key components of noise cancelling headphones include microphones strategically placed on the headphone housings to pick up ambient noise, internal circuitry that analyzes the incoming sound signals, and built-in speakers that reproduce the desired audio content. When noise cancelling is activated, the headphones generate anti-noise signals that are precisely phase-inverted and mixed with the incoming sound waves, effectively canceling out the unwanted noise before it reaches the listener's ears.