An illustration of the Doppler Effect and how relative motion affects the perceived frequency. Various different flypast cases are animated and put together with the simulated sound. Animations coded using Visual Basic .NET, the sprites were Microsoft clip art ;-) and the sound was coded and output using LabVIEW 2010.
0:55 Sonic Boom?
InHouseMaterial 2 months ago
@InHouseMaterial Yep! All the wavefronts bunch together and the sharp discontinuity gives rise to the 'boom'. At higher Mach numbers the wavefronts still bunch together but are inclined by arcsin(1/M), which explains why you only hear a supersonic object after it has passed overhead.
khyar 2 months ago