[asztalos]

Hello everyone. I am opening this topic in order to find out where a strange noise is coming from exactly. It's a BMW 320d E90, made in 2008.
The problem would be : there is a strange sound coming behind of the turometer and I couldn't figure out what it is. When I am having aprox. 1000 rpm, a strange noise appears. It sounds really strange. At least I can provoce this noise meanwhile I am standing (do not need to move the car).
I have uploaded 3 videoclips. If someone had to due with this sound, could please give me a hint? I would appreciate every oppinion.
Here is the link with the uploaded videos : http://www.hotfiles.ro/download/stra...90.zip/1076151
In the clip which has 22 seconds, at second 11 you cand hear this sound :

I couldn't figure out where it is coming from, eather. Please help