Ten Lectures on Wavelets

Ingrid Daubechies, Society for Industrial and Applied Mathematics, Philadelphia, Pa., 1992

Nyquist frequency is a term I have met many times. In Daubechies’s book, which is one of the classics about wavelets, I obtained a “natural perception” of it for the first time, which means a kind of assuring understanding. Meanwhile, I got a better understanding about the aliasing phenomenon. Perhaps it is just one interesting fact among the myriad in the nature, under sampling a signal can still get some bona fide portion of frequency spectrum of the signal, other than aliasing every frequencies.

~ by zkwzju on 2009/07/04.