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author
Daniele Nicolodi <nicolodi@science.unitn.it>
date
Mon, 05 Dec 2011 16:20:06 +0100 (2011-12-05)
parents
f0afece42f48
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+ − % CONV_NOISEGEN calls the matlab function conv.m to convolute poles and zeros from a given pzmodel
+ − %
+ − % The function is a private one and is called from ngconv.m in the
+ − % noisegenerator folder.
+ − %
+ − % Inputs (from ngconv.m):
+ − % - pol
+ − % - zero
+ − %
+ − % Outputs:
+ − % - b: denominator coefficients of transfer function
+ − % - a: numerator coefficients of transfer function
+ − % A Monsky 24-07-07
+ − %
+ − % $Id: conv_noisegen.m,v 1.2 2008/08/01 13:19:42 ingo Exp $
+ − %
+ −
+ − function [b,a] = conv_noisegen(pol,zer)
+ −
+ − [m,k] = size(pol);
+ − [n,l] = size(zer);
+ −
+ − coefb = pol(1,:);
+ −
+ − for i = 2:m
+ − coefb = conv(coefb, pol(i,:));
+ − end
+ −
+ − b = nonzeros(coefb);
+ −
+ − if n~=0
+ − coefa = zer(1,:);
+ − for i = 2:n
+ − coefa = conv(coefa, zer(i,:));
+ − end
+ − a = nonzeros(coefa);
+ − else
+ − a = 1;
+ − end
+ −
+ − %normalize to bn = 1
+ − m = length(b);
+ − normfac = b(m);
+ − b = b/normfac;
+ − a = a/(normfac*sqrt(2));
+ −
+ − end
+ −