+A3d was a pioneering sound technology developed by Aureal Semiconductor, designed to render realistic [3D Audio](/wiki/3D_Audio) environments. It leveraged [HRTF](/wiki/HRTF) to accurately position virtual sound sources, significantly enhancing immersion in PC video games.
+## See also
+- [Aureal](/wiki/Aureal)
+- [EAX](/wiki/EAX)
+- [Sound Card](/wiki/Sound_Card)
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