Windscreen options

[Grumpy Goat]

Over about 60 mph I get this weird sort of higher pitched hum, which immediately stops when I turn my Schuberth helmet more than 45 degrees to one side or another. The sound stops instantly when I turn my head, so I'm wondering if it's not how the wind comes off of this windscreen and hits my helmet. The wind protection itself is quite good.

Maybe it is the helmet itself. The projected area of the helmet is different for the frontal projection vs the oblique projection, and at all points in between so I am not at all surprised that you get different sounds when rotating your head. I think that wind coming off the windscreen could be another contributory factor. I also have a naked bike with no to little windscreen and my helmet makes different sounds front to side.