"Jim Carr"

With that said, help me out here. I can't get myself away from the
assumption that since a speaker diaphragm has a throw of a certain
distance,
then the waves started by the diaphragm may be started from any point in
that throw. As such two waves which are created a certain time apart may
end
up traveling different distances to reach my stationary ear, thus a
Doppler
shift.


** A time delay or advance is just that - it is not Doppler. Any such
delay or advance depends solely on the position of the cone - not its
*velocity*. If a cone is displaced by 10mm, that will introduce a time
error of 29 uS or a phase shift of 50 degrees at 5 kHz.

Any attempt to measure Doppler frequency shifts must allow for this -
most have not.



.............. Phil