Active Noise Cancelling (ANC) is a technology used in headphones and earbuds to reduce unwanted ambient sounds. It works by using microphones to pick up external noise and then generating sound waves that are the exact opposite, effectively canceling out the noise. This process allows users to enjoy music or podcasts without distractions from their surroundings. ANC is particularly useful in noisy environments, such as airplanes or busy streets. Many popular brands, including Bose and Sony, incorporate this technology into their products, providing a more immersive listening experience. Users can benefit from clearer audio and reduced fatigue during long listening sessions.