I'd like some help with this too. I've never had VOX working (in any game). I have been trying to follow along with the radio setup page on the trainers site (
http://trainers.hitechcreations.com/radio/radio.htm), but not having much luck. I think the problem is not AH, but windows (win7 in my case). Win7 is different than the setup shown on the trainers page, but when I get to a screen for configuring mic for voice recognition, where there is actually a level indicator, I have to yell into it to make it move. I've tried setting mic level to 100, mic boost to max, etc. If I disconnect the mic boom, the level indicator doesn't move at all, so I think it IS getting some input from that mic. I don't have any other mics attached.
In game, if I tune to myself, and do VOX, and YELL, I can barely hear myself.
I don't think it's AH, but also confused as to how to debug it. Headset is "Ear Force HPA2". I've tried playing with the volume/etc settings on the little dongle hanging off the headset, but didn't see any changes.
err... HELP?