1999 acura 3.2 tl terrible noise over 40 mils/hour

Hello guys,

My 1999 tl has pretty bad noise when doing 40 miles and up. The whining noise sounds like a supercharge activated when speeding up. The faster the car goes, the louder it will be. A mechanic told me it was a wheel bearing issue. I replaced the driver-side front bearing but it did not help (it wasn’t as smooth as it should be though). I checked the passenger side bearing and it worked fine. I also checked the front wheels after jacked up them. It feels like almost zero clearance on either side. Then I did another test. I jacked up both front wheels and started the engine and placed the tranny in drive. Then pressed the gas gradually. I did not hear any noise at all. But it definitely has something to do with suspension components, right?

When driving, I have no problems moving forward and backward and no noise when changing gears. I doubt it’s the tranny issues. The drive belts are only a few months old. What about the alternator? If it’s the bearing of the alternator, the noise won’t be that loud. What about transaxle bearing(s)?

I’m planning to take the car to a dealer but not sure it they can detect the problems.

Thanks in advance.