www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/@singleton/todf1t.m
function Hd2 = todf1t(Hd); %TODF1T Convert to direct-form 1 transposed. % Hd2 = TODF1T(Hd) converts discrete-time filter Hd to direct-form 1 % transposed filter Hd2. % Copyright 1988-2002 The MathWorks, Inc. [b,a] = tf(Hd); Hd2 = dfilt.df1t(b,a);