Whirring noise nissan

Hello all I'm currently working on a 2008 Nissan Altima. The problem I'm having is the car is making a whirring noise sounds like it's coming from the front of the car and it progressively gets louder the faster I go. One side note it does not make the noise unless it's in gear going down the road. I also replaced both front wheel bearings and the noise is still there.

Possibly CVT transmission related? How many miles on the car? Service history?

Too little information for understanding. Hope your car is alright.