view m-toolbox/classes/@pz/ri2fq.m @ 25:79dc7091dbbc
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Update tests
author |
Daniele Nicolodi <nicolodi@science.unitn.it> |
date |
Mon, 05 Dec 2011 16:20:06 +0100 (2011-12-05) |
parents |
f0afece42f48 |
children |
|
line source
% RI2FQ Convert comlpex pole/zero into frequency/Q pole/zero representation.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DESCRIPTION: RI2FQ Convert comlpex pole/zero into frequency/Q pole/zero
% representation.
%
% CALL: [f0, q]= ri2fq(c)
%
% VERSION: $Id: ri2fq.m,v 1.4 2011/02/18 16:48:54 ingo Exp $
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function [f0, q]= ri2fq(c)
if(nargin==0)
disp('usage: [f0, q]= ri2fq(c)');
return
end
a = real(c(1));
b = imag(c(1));
f0 = sqrt(a^2 + b^2)/(2*pi);
q = 0.5*sqrt(1 + b^2/a^2);
end