Audi a4 b7 Weird sound while driving
 

Hi everyone, ive uploaded and attached a link to a video on which you can hear the sound get higher as the speed increases and dimmer as the speed decreases.
Does anyone recognise that sound? It gets really loud when driving 60 and over, thats why im trying not to go that far.
This sound started about a week ago.
Link to video:
https://www.youtube.com/watch?v=CSZp...ature=youtu.be