I don't give a rat's ass about opinion. Show me the science
reduced as it must be to an expression which predicts the
consequences on any waveform and which can be exprimentally
verified.

I'm not being snide when I ask, why don't you work it out for yourself? It's not
horribly complex.

All you need is to apply the formula for the Doppler shift of sound to the
low-frequency excursions of the cone.