The application of home theater audio in home theater refers to the audio specially configured for movie playing. As the name suggests, its sound effect should be close to the style of cinema, so the minimum configuration should be 5.1, decoding Dolby and DTS to realize surround sound. Different from the home karaoke system and CD music system, the home theater audio configuration has a high starting point. The home karaoke system and CD music system can be realized with 2.0. There are many aspects involved in home theater audio, such as the layout of power amplifier, loudspeaker, speaker, and the treatment of sound field environment, which will affect the sound quality.