Its 4am here annd i just woke up to the crasiest noise. Its like a constant high pitched note. Its sounds distant but occasionally another high note comes in over it aswell then stops. At first i thought it was an alarm but it fades in and out as if whatever's emanating it is moving.
I have tried to record the aound with my phones video camera. I have no idea of the quality and will post later in the day hopefully.
Edit: Okay you cant hear it at all in the recording. The sound has happened twice now so if i hear it again ill try and switch my comp on and get audacity + mics plugged in.