Dolby AC-3

Dolby AC-3, also known as Dolby Digital, is an audio compression technology used in movies, TV, and home theaters. It reduces the size of audio data while preserving high-quality sound, enabling multiple sound channels—like surround sound with speakers around you—to be transmitted efficiently. This allows for rich, immersive audio experiences without requiring large storage or bandwidth. AC-3 supports up to 6 channels, including left, right, center, and surround speakers, making it popular in cinemas, DVDs, and streaming services for delivering clear, dynamic sound.