"Phil Allison" wrote in message
...

** 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*.

I disagree. The time delay or advance *is* Doppler. The speed of sound is
constant in a given medium. In the classic example of the train whistle the
velocity of the train changes the distance/time between waves, but those
waves travel just as fast as if the train were still. It seems like you are
saying Doppler has to do with adding velocities together, which is untrue.