www.gusucode.com > wavelet工具箱matlab源码程序 > wavelet/wavelet/@laurpoly/modmat.m
function M = modmat(H,G) %MODMAT Modulation matrix associated to two Laurent polynomials. % M = MODMAT(H,G) returns the modulation matrix associated with % two Laurent polynomials. This matrix is such that: % % | H(z) H(-z) | % M(z) = | | % | G(z) G(-z) | % % See also PPM. % M. Misiti, Y. Misiti, G. Oppenheim, J.M. Poggi 22-Jan-2003. % Last Revision: 13-Jun-2003. % Copyright 1995-2004 The MathWorks, Inc. M = laurmat({H , newvar(H,'-z'); G , newvar(G,'-z')});