Typically, a tire noises will change in the pitch depending on the road or different types of pavement. As an example, your tire noise may change between asphalt and cement. On the other hand, a wheel bearing now will remain the same, regardless of the type of road or pavement.
On the other hand, wheel bearing noises typically will not change – unless they’re getting louder as the condition of the bearing deteriorates.
You may also hear a variation in wheel bearing noises with hard turning maneuvers. That’s because the change of ‘load’ on the wheels during those turns.