I suspect helmet shape plays a part and also angle of helmet.
I listen to music when I ride. Generally, I set my Pandora to an artist and when a song comes on I don't care for, I take my earbuds out and listen to my bike. Sometimes I have to look down more to hear my bike. Other times tilt my head to the side or turn my head s little. Or even tip my helmet up with my hand. Just depends on direction of wind and direction I'm headed.
Fortunately and usually it's not overwhelming wind noise. Once again my relatively inexpensive giro helmet helps...I think.
Of course, because I listen to music while riding I worry less about wind noise, however with some earbuds you still hear wind noise.