Hey guys, just to let you know i'm still stumped with the same problem.

Same random high pitch noises. I can't determine the cause of any interference from anywhere, so i'm begining to doubt it's that. Also, i separated my GPU from my sound card in my pc as far away from each other as i can, so the GPU can't be causing any kind of interference either. Wires in my pc are neatly organized and nothing seems to be where it shouldn't be. Um, i'm fairly positive all my drivers are up to date. I can't really think of anything else.

Could my adapter for my subwoofer cause interference? Also, the house i live in uses an old fuse box for power, could that cause problems of any sort? Please, if somebody thinks they can help in any way, give any ideas, i would appreciate it.