Need more info like... Type of head set. Cables. TV/HDTV Brand. his is need so XPG can be in yr shoe and see what we can do to help. also some PICs would be a big help too.
got a link to a pic for them? im pretty sure cod doesnt make headsets also i could be wrong but make sure you have the red and white cables from the xbox going into the tv as well as your headset should look like a y cable with a red and white end on it, you might be putting the headphone jack into your tv instead of the y cord this vid should help you out:http://www.youtube.com/watch?v=hwA4e0Ul0pg (not my video and i know you have a different headset but this should be the same procedure)
Here is the headset he have https://www.turtlebeach.com/product-detail/mobile-headsets/call-of-duty-ghosts-shadow/396