I have an X-Fi Surround 5. USB (SB090) and I noticed in Windows 7 some odd behaviour regarding the optical digital (Toslink) output and the selected ouput sample rate.
Though 6 different rate/bit-length options are seen in the pull-down list in Windows, only one of them actually works (48kHz) and only two?outputs (48kHz in either 6 or 24 bits)?can actually be produced!
I'm using Win7 x64 and the latest driver from Creative's site, "XFXA_PCDRV_LB__0_0099.exe".
Selecting the default output rate in Windows has the following effects:
Setting 48kHz/6-bit (aka "DVD quality" in Windows) will actually output 48kHz/6-bit.
Selecting ANY other rate, regardless of what it says, actually outputs 48kHz/24-bit.
I.e. selecting any of
44.kHz/6-bit ("CD quality")
ALL result in sound output but?output that is 48kHz at 24bits, and NOT the rate that is shown (with the exception of that rate itself of course). So it tells you that's the rate but that's not what it outputs (my receiver shows what the incoming stream is).
The SB090 itself is capable of outputting all of?these rates, I do know that much, but none of them seem to work in Win7 with this driver except 48/6 and 48/24. Therefore I'm assuming it's a driver issue?
I've tried every driver/setup option I can think of to get 44./6 output, including disabling all enhancements, enabling/disabling exclusi've and priority modes, and even using WASAPI streaming...none of these work. (Trying WASAPI in exclusi've mode to overrride the driver seems to freeze my player as well.)
With the Creative drivers removed (and running on the built-in Win7/MS driver) I noticed one other oddity. 44./6 is a selectable rate but selecting it causes an error message in Windows to the tune that "the device does not support this output", despite it being listed. However with the MS driver I can get 96kHz output working (only 6-bit I believe).
Anyone know if there is a fix for this or if they will update the drivers to fix it? I've emailed Creative support as well.