This phenomenon is real but is in fact due to the reverse Doppler effect. Accordingly the solution is simple: after the bump, turn up the volume, step on the gas and wipe that tear away.
Speed bumps as a cause of hearing loss.
Have any members driven over a "speed bump" (these are the elevated paved bumps to force you to drive slower)while listening to the car stereo and immediately noticed a hearing loss(distortion, high frequency loss and level decrease)? I am a chiropractor and can verify the fact that speed bumps will absolutely mis-align the tiny bones in the ear so music sounds terrible afterwards, write your city councilman about these. I have to slow to less than 5mph in order to prevent this governmental assault and battery.