Knocking on certain bumps :/

I can hear a hollow knocking noise coming from somewhere on the front or mid section Of the car , it doesn't travel through the steering just certain bumps it knocks , most probably will be a ramp job just wandered if anyone had any ideas?
 
I've had this noise since about 6 months of ownership, have replaced a lot of stuff under warranty but the noise is still there, i've sadly learned to live with it...