A3D is a patented technology developed by Aureal over the years. It is based on the API interface of Direct Sound 3D. The biggest feature of A3D is the ability to increase the realism of the new generation of game software interactions with the positioning of 3D sound. This is commonly known as 3D positioning technology. 3D positioning technology is the development direction of PCI sound card, and the technology is becoming more and more mature. It is only because of the high cost of implementation, so not every PCI sound card supports this technology.
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