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Dirac comb
In mathematics, a Dirac comb is a periodic Schwartz distribution constructed from Dirac delta functions
for some given period T.
Sampling and aliasing
Multiplication of a continuous signal by a Dirac comb is sometimes called an ideal sampler with sampling rate T. When used as an ideal sampler, it can be used to understand the effects of aliasing and as a proof of the Shannon-Nyquist sampling theorem.
See Shannon-Nyquist sampling theorem for a proof using the Dirac comb.
See also
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details