For a few months now my headphones have been giving off a silent buzzing sound of varying pitch whenever I A) Play any Steam game B) Go into 3D view in Hammer and C) Use Jed's HLMV. Just recently the buzzing has gotten louder and now its extremely noticeable. I know it can't be a problem with my headphones because the buzzing always happens in the same places(or programs) and the pitch is always the same depending on what program it is and what thing I am doing in that prgram. Different models in HLMV give off different buzzing pitches, moving my mouse in 3D view in Hammer makes the buzzing a hell of a lot louder, and just standing there, doing nothing, in Counter Strike gives off a buzz. Does anyone have any clue as to why this is happening?
Here's a clip of the sound, recording not from my headphones but from the computer, so I know its not a headphone issue. The first high pitched buzz is me opening HLMV while running Steam. When I close Steam the pitch suddenly drops a lot. the 3rd buzz in me moving my mouse in 3D mode in hammer.
http://www.ykwsoftware.com/sean/Annoying_buzz.wav