What is EAX?

(Envionmental Audio Extensions) is sound system developed by Creative Technology Ltd. used by many older games for realistic reverb, surround sounds, doppler effect simulation, surround sound and many more. EAX was compatible with Creative and Realtek soundcards.EAX saw first release in 1999 and over the time, it had 5 versions.Star Wars : Battlefront II uses EAX 4.0Here you can see a quick demonstration of EAX enabled and disabled in several games:Sadly, EAX was discontinued in 2005 due to absence of HAL (Hardware Abstraction Layer) and Directsound in Windows Vista and newer, breaking compatibility with EAX.EAX support can be restored on modern operation systems using wrappers such as Creative ALChemy and DSOAL. The best solution is DSOAL which works on every soundcard.