RZ,nI: Claude Shannon

From: Gabaly, Stephen J <stephen.j.gabaly_at_baesystems.com>
Date: Wed Feb 28 11:24:37 2001

> -----Original Message-----
> Some of Shannon's better known known theorems include
> the Sampling Theorem, which indicates that a bandwidth-limited
> signal can be reconstructed only if sampled at least at twice
> the frequency of the highest-frequency spectral content.
>
Take a 1 Vpp_at_40Hz Sinewave, highest-frequency spectral content is 40Hz,
sample it at twice this frequency, 80Hz, sample at 0 and 180 degrees (0Vpp
Amplitude), the reconstructed sinewave will be 0Vpp at 0 Hz. Oh well, guess
Shannon's theorem is incorrect...

steve
Received on Wed Feb 28 2001 - 11:24:37 GMT