📄 fir_m.htm
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<BODY><PRE>% fir.m - sample processing algorithm for FIR filter.
%
% [y, w] = fir(M, h, w, x)
%
% h = order-M filter (row vector)
% w = filter state (row vector)
% x = scalar input
% y = scalar output
% based on fir2.c
function [y, w] = fir(M, h, w, x)
w(1) = x; % read input
y = h * w'; % compute output
w = delay(M, w); % update delay
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