Optical audio refers to a method of transmitting sound signals using light instead of electrical signals. This technology typically uses a fiber optic cable to send audio data in the form of light pulses, which can provide high-quality sound with minimal interference. It is commonly used in home theater systems and soundbars to connect devices like DVD players, Blu-ray players, and gaming consoles to receivers or speakers. One of the main advantages of optical audio is its ability to support multi-channel audio formats, such as Dolby Digital and DTS. This allows for an immersive listening experience, making it popular among audiophiles and movie enthusiasts. Additionally, optical audio connections are immune to electromagnetic interference, ensuring a clear and reliable audio signal.