2 ms·
> according to the Nyquist-Shannon Sampling Theorem, the sampling rate must be at least twice the duration of the shortest burst in order to accurately reflect
by dreamcompiler 7y ago
> according to the Nyquist-Shannon Sampling Theorem, the sampling rate must be at least twice the duration of the shortest burst in order to accurately reflect the intensity of a burst.
This statement is a bit sloppy. I think what the author is trying to say is the sampling rate must be such that it samples the shortest burst at least twice. Equivalently you could say that the sampling period should be no longer than half the length of the shortest burst.
This would accurately reflect the fundamental frequency of the burst, but if the burst is not sinusoidal you'll get aliasing. The effect of which will be to falsely indicate lower-frequency bursts that aren't actually present.