Hay, recently i have just bought a new headset, for gaming, ventrilo and music. its the Steelseries 3H, it's a nice compatible thing, im pleased with MIC quality, but when i am not listening to anything and it is quiet when im on a game, i hear a annoying noise, like a helicopter flying round sort of noise, I do not know why it happens, but only seems to happen when i have a open application.

Please help/give suggestions :)?

does it come with a software? try to play around with the settings of your audio...