Peter Weis wrote in
. dk:

Bob Cain wrote:

What occurs when, OTOH, you put a HF source on a swing going at some
LF will look like traditional Doppler distortion. There is a
difference in what is measured in that case, where the LF source is
decoupled from the receiver, and what happens when the same motion is
given a piston in a tube where it remains fully coupled.

That's interesting, because that is what I don't grasp (meaning I
think you are wrong).
Can you explain the difference to me, like setting up a motion
equation for the HF source diaphragm in the two cases?

best regards
Peter


Apparently Bob Cain has decided to keep the explanation that you requested
a secret.