DailyTech - Microsoft Windows Vista features a new audio stack, which completely revamps how the operating system communicates with audio devices. The new audio stack, dubbed Universal Audio Architecture, or UAA, requires companies to develop new drivers. Hardware accelerated audio devices are treated as an independent device, separate from the audio output capabilities of a sound card under Windows Vista. The way UAA handles hardware DSPs is a problem for Creative Labs when it comes to delivering hardware acceleration for DirectSound 3D and EAX algorithms. Earlier this year Creative Labs launched its ALchemy project that enabled hardware-accelerated audio on Sound Blaster X-Fi owners. ALchemy translates DirectSound 3D and EAX calls into OpenAL, which can still take advantage of the DSP hardware.