bfre4.m

里面囊括了基于matlab滤波器设计的各种.m文件

 % Y = bfre4(A,B,M,N,L,l)
% BFRE -- Branch Frequency Response Evaluation(4_Channel)
% A's columns are h0,h1,h2,h3; B's columns are g0,g1,g2,g3
% M, N are decimation and interpolation factors respectively
% This function utilizes BFRE2.

function Y = bfre4(A,B,M,N,L,l)

Y = bfre2(A(:,1),A(:,2),B(:,1),B(:,2),M,N,L);
Y1 = bfre2(A(:,3),A(:,4),B(:,3),B(:,4),M,N,L);
Y = Y + Y1;
Y = abs(fft(Y));

playdb(Y,l)