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%
% Copyright 2001 Free Software Foundation, Inc.
%
% This file is part of GNU Radio
%
% SPDX-License-Identifier: GPL-3.0-or-later
%
%
function plot_freq_response (b,...)
if (nargin == 1)
%% Response of an FIR filter
a = 1;
elseif (nargin == 2)
%% response of an IIR filter
a = va_arg ();
endif
[H,w] = freqz (b,a);
plot (w/(2*pi), abs(H));
grid;
xlabel ('Normalized Frequency (Fs == 1)');
ylabel ('Magnitude (linear)');
endfunction
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