In the context of aviation and aerospace, "Dolby Surround" refers to a type of audio system or technology used in some aircraft, particularly commercial airliners and business jets. However, it is not directly related to the immersive audio experience usually associated with the Dolby brand in home theaters or cinemas.

In aviation, Dolby Surround typically refers to a noise reduction or noise management system designed to minimize background noise within the aircraft cabin. The technology uses a combination of microphones, audio processing algorithms, and speakers to actively cancel out ambient noise, such as engine rumble, wind, or other background sounds. This helps create a quieter and more comfortable environment for passengers.

The Dolby Surround system in aviation applications often involves the following components:

1. Microphones: Strategically placed to capture ambient noise within the cabin.
2. Audio processing: Advanced algorithms analyze the noise patterns and generate "anti-noise" signals to cancel out the unwanted sounds.
3. Speakers: Discreetly integrated into the cabin, these speakers emit the "anti-noise" signals to nullify the ambient noise.

By reducing background noise, the Dolby Surround system can help improve passenger comfort, reduce fatigue, and enhance the overall in-flight experience. However, it's essential to note that this technology is not related to the Dolby Surround audio format used in entertainment systems, which provides an immersive audio experience with surround sound.