[Openal] X-fi and HRTF in OpenAL

[Taka Tani]

hello,

Yesterday I changed my sounddevice onboard AC'97 to X-fi xtreme gamer,
and tried to run some OpenAL programs.
I expected it made my source localization feeling more real,
however it came to blurry especially about upper/lower positioning.

Must I add some sort of additional code to my own OpenAL program to get 
better HRTF feeling with X-fi?

thanks

Taka

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