www.gusucode.com > wavelet工具箱matlab源码程序 > wavelet/wavelet/haarinfo.m
function haarinfo %HAARINFO Information on Haar wavelet. % % Haar Wavelet % % General characteristics: Compactly supported % wavelet, the oldest and the simplest wavelet. % % scaling function phi = 1 on [0 1] and 0 otherwise. % wavelet function psi = 1 on [0 0.5), = -1 on [0.5 1] and 0 otherwise. % % Family Haar % Short name haar % Examples haar is the same as db1 % Orthogonal yes % Biorthogonal yes % Compact support yes % DWT possible % CWT possible % % Support width 1 % Filters length 2 % Regularity haar is not continuous % Symmetry yes % Number of vanishing % moments for psi 1 % % Reference: I. Daubechies, % Ten lectures on wavelets, % CBMS, SIAM, 61, 1994, 194-202. % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 12-Mar-96. % Last Revision: 01-May-1998. % Copyright 1995-2002 The MathWorks, Inc.