So it is very odd...I know I am of no help in the description. It is more of a high pitched whistle, it does increase with increases in RPM and road speed. At 1st I really thought it was my tires on a smooth newly paved road. But when I let off of the accelerator the pitch decreases. So I thought today ,...maybe yes perhaps it is my tires. It would make sense if I let off of the gas pedal the tire rotation/speed would decrease and so would the noise. However, so would the RPM of the engine as well. I am going to drive tomorrow on an old road going to work and see if I hear the noise. I will also test it again when I go to work in the morning at idle in my garage and will increase the RPM.
I know what the whine of my power steering was causing, when you turn your wheels in either direction. That I would classify as a whine. This is not that noise. And that noise stopped once my mechanic changed the power steering fluid and put in a new O'ring, thankfully. I have watched videos of a whine noise, growl almost of an alternator, and no I don't have that noise either, thank God!