Sound is not part of the visible light section of the electromagnetic spectrum, and therefore, you cannot "see" sound.
However, sound travels at the same velocity in a given material, in this situation, air. The simulated surround sound is based on this fact, and uses the minute differences in how the sounds arrives at your ear and the nearly insignificant time differences between the different arrival times. This "technology" uses the walls and other objects to bounce the sound waves toward you. By dynamically modifying which speaker plays a particular note, and the way the speakers are set up, it is possible to simulate a surround sound environment. Similar to an equalizer (more technically involved and tedious process) setting up a room so that all frequencies can arrive at the location most will listen to the audio (set up using a microphone).
Similar to how pool is played, by bouncing the ball against the side to get it into a pocket, without a direct line of sight.
