www.gusucode.com > wavelet工具箱matlab源码程序 > wavelet/wavelet/shaninfo.m
function shaninfo %SHANINFO Information on complex Shannon wavelet. % % Complex Shannon Wavelet % % Definition: a complex Shannon wavelet is % shan(x) = Fb^{0.5}*sinc(Fb*x)*exp(2*i*pi*Fc*x) % depending on two parameters: % Fb is a bandwidth parameter % Fc is a wavelet center frequency % % The condition Fc > Fb/2 is sufficient to ensure that % zero is not in the frequency support interval. % % Family Complex Shannon % Short name shan % % Wavelet name shan"Fb"-"Fc" % % Orthogonal no % Biorthogonal no % Compact support no % DWT no % complex CWT possible % % Support width infinite % % Reference: A. Teolis, % Computational signal processing with wavelets, % Birkhauser, 1998, 62. % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 18-Jun-99. % Last Revision: 05-Jun-2003. % Copyright 1995-2004 The MathWorks, Inc.