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Phil Allison Phil Allison is offline
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Default Dynamic phase shift


"Joseph Meditz" wrote in message
ups.com...


** Groper Alert !


** Dynamic phase shifting of audio signals is all around us, all the
time.
The fact that cones move, continuously alters the origin and hence time
of
arrival of any higher frequencies being simultaneously radiated. Phase
shift in degrees ( at any point in time) is simply 360 x cone excursion /
wavelength of the high frequency.

Some call this effect " Doppler Distortion" - a misnomer.


I say that this is precisely an acoustical frequency modulator




** It is an acoustic phase modulator.



I found the term "Doppler Distortion" helpful. The situation here is
not exactly like the sound of the horn of a train passing a station.
Rather, it is the sound of the horn of a crazy train oscillating back
and forth across the station.



** Nope.




.......... Phil