Eckard.
Your note to Tom is excellent. A seemingly disguised author responded to the copy of the above on my string, missing every key point and subtlety! My response is relevant;
Alec
Thanks for your interest but you've actually missed all 3 points! Partly my fault as I was posting to Eckard (Blumstein) who is a sound specialist. Firstly; yes, of course we've assumed amplitude modulation, (and indeed other aspects) and for over 100 years, but the point is that this is suggesting something different;
It was a rigid mirror not foil, transmitted through air not converted to OF or radio signal pulse codes and there was no diode or decoder, just a plane at the receiving end. This is consistent with more subtle frequency modulation within the superposed wave pattern, and the recent finding re reflection from free ion/plasma fine structure surface 'charge' particles not the medium atoms. This involves PMD and it's importance is the link that gives to sudden death of entanglement, removing Bells inequalites. See; Phys Rev Lett 106, 080404 (25 Feb 2011). I'm sure you believed and love all your 40yr old physics. I was never so convinced (yes, I was taught it, and maths!) and believe it may be improved (as it always has been!).
Again the point about sound within Concord was a conceptual one for Eckard who struggled with the 'Incentric' motion, of gas jets, the core emissions only 'apparently' doing 7c, partially as they are moving within a moving stream equivalent to the fuselage of Concorde. Again the other 'old' stock answer to this can't derive the Hubble observations suggestion of superluminal motion, the DFM explains that this is only due to it's camera 'measuring' from a non valid reference frame. it is an 'apparent rate of change of position' so the SR postulates are not breached. i.e. we can have Local Reality in SR (and without a problem with Bell!). The quantum mechanism driving it is then 'simply' PMD (Stokes Scattering). Sorry if you don't like it but I've tried it Peking and a'l'orange and it does everything it is supposed to, but without the paradoxes. And of course all observers will measure light at 'c' anyway, even in a vacuum, as fine structure ions do what we now know they do, changes it to 'c' locally.
Concorde shrinking?! You really must loosen up and spot poetic licence and tongues in cheek! It was a more amusing way of reminding Eckard (as he actually didn't really need reminding) that contraction has never been found, except, as I've shown him by video, that it has in simple terms of Doppler shift between reference frames - of both sound and light (when changed to the new local 'c' of course). Again it's not 40 year old physics I'm afraid, but that can't be helped. Nature not 'belief' is the final arbiter. Eckard does have a pretty good understanding, though it took some time (and not yet complete) as it needs rare (dynamic, mental) skills - see the latest link in (Eckards) string.
I anticipate from that insulting and wholly incorrect comment (about 'baby' errors, and learning basic physics!) at the end that you'll be unable or unwilling to conceive much of the above. I do hope you'll try anyway as you'd find it worthwhile. For the record I have studied and written a comprehensive paper on PMD and Harmonics as well as other subjects. If you generally assume people may know a little more rather than a little less you may be correct a little more often, and be a far happier person!
Best wishes
Peter
PS. You may perhaps offer some help; As motion is an invalid concept in geometry, and algebra and math use geometrically derived vector space, how does maths validly compute dynamics/motion in 4D?