1. The problem statement, all variables and given/known data Why are the bass notes of a car radio heard by people on the street and not the high notes 3. The attempt at a solution I think it has something to do with fixed and free end boundaries and may have something do with the fact that the high notes are being reflected back into the car while the bass notes are transmitted through the car. I have not learnt the pitch or acoustics unit yet. Can anyone help?