The system and method of the present invention provides surround sound effects through a two channel system. In one embodiment, the first channel is connected to one speaker (e.g., the right speaker) of a headset and the second channel is connected to the other speaker (e.g., the left speaker) of the...http://www.google.de/patents/US6009179?utm_source=gb-gplus-sharePatent US6009179 - Method and apparatus for electronically embedding directional cues in two channels of sound
