📄 dbp_m.htm
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<BODY><PRE>% dbp.m - ideal bandpass FIR filter
%
% h = dbp(wa, wb, N) = row vector
%
% N = 2M+1 = filter length (odd)
% wa, wb = cutoff frequencies in [rads/sample]
function h = dbp(wa, wb, N)
M = (N-1)/2;
for k = -M:M,
if k == 0,
h(k+M+1) = (wb - wa) / pi;
else
h(k+M+1) = sin(wb * k) / (pi * k) - sin(wa * k) / (pi * k);
end
end
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