Q: Wobbling or vibrating noise from the front

I have a 2007 Ford focus automatic transmission with 120,000 miles on it. I have been hearing a wobbling type noise that speeds up as I drive faster and it's coming from the front or front left area. I hear it at speeds between 20-50mph+. The sound continues no matter if I'm pressing the gas or not and it also continues even when I press the breaks. I can sort of feel a slight vibration from the floor or pedal like it's coming through the wheels or something. It's not a warped rotor, I would know what that feels like. The tread on the tires look fine, but a side note is that I did have them rebalanced and rotated 2 months ago. The sound also has nothing to do with turning because it remains continuous regardless. Another side note is that I did have my front right wheel bearing assembly replaced. When the wheel bearing went bad it sounded like a low hum but this sounds more like a repetive thump or wobble. Hopefully you can point me in the right direction.