Noise-canceling earphones are designed to reduce unwanted ambient sounds, allowing users to enjoy music or podcasts without distractions. They use microphones to pick up external noise and generate sound waves that counteract these sounds, effectively "canceling" them out. This technology is particularly useful in noisy environments like airplanes or busy streets. These earphones come in two main types: active and passive. Active noise-canceling earphones use electronic components to block noise, while passive noise-canceling earphones rely on physical design to create a seal around the ear. Both types enhance the listening experience by minimizing background noise.