spoken as you breath out (releasing air) "phomph" is the sound made by a large mass moving through, and thus displacing a body of air.
phomph as the car speed past, almost hitting the unaware pedestrian
by lars faber May 19, 2011
The sound of a large uncompressed body of air moving. Commonly heard near wind turbines as the blade passes in front of the tower. More extreme as seperation angle advances or as tip ratio increases.
phomph, phomph, phomph as the wind turbine rotor spins
by windlab April 26, 2011