[GiudiceLab]

I've attached our sample script. It's rather difficult to explain concisely, except that the sound spatialization is much more convincing in XP. It's like the hrtf_full algorithm is not applied at all in Windows 7. In fact, changing this setting in Win 7 seems to have no effect on the sound, while changing it in Win XP produces a noticeable difference.

Most significantly for our needs, trying to orient toward the sound in Win 7 produces high variation--it is easy to tell when the object is dramatically left or right, but very difficult to localize within about 90 degrees, and front and back are indistinguishable. In XP, we can localize the sound within about 10 degrees, and rearward sounds are slightly muffled, so it is easier to distinguish front and back.

I hope you can help. We really want to continue moving forward with development on this platform.