What would cause the car to run higher rpms but not increase speed when driving

What is your question?

It happens at the mid to higher rpms in every gear 1-6. When I am driving down the road and shift gears the car accelerates fine at the lower rpms but when the car hits about half the gears range it starts to run higher rpms but goes no fast

What makes this problem better or worse?

Nothing

How long has your 2003 Hyundai Tiburon had this problem?

Two weeks