7.1 (Audio) refers to a surround sound audio format that enhances the listening experience by providing sound from multiple directions. It typically includes seven main channels and one low-frequency effects channel, allowing for a more immersive audio experience in movies, music, and video games. This format is designed to create a three-dimensional sound environment, making it feel as if the audio is coming from all around the listener. 7.1 (Audio) is commonly used in home theater systems and professional audio setups, providing a richer and more engaging sound experience compared to traditional stereo formats.