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February 25th 04, 04:54 PM

(Avery Fineman) wrote in message ...
....
Thank you, Tom...but I've done the "SineX over X" thing a few times
already and looked at a lot of spectral displays.
....

My sincere apologies. I thought you had posted something about
relatively little even-order harmonics unless the pulse width is very
short. As you've done the calcs and know that in a 1/3-2/3 rectangle
wave, there's well over two times the energy in the second harmonic as
in all the odds put together, I'm obviously mistaken about what that
previous posting said.

Cheers,
Tom