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author | Daniele Nicolodi <nicolodi@science.unitn.it> |
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date | Mon, 05 Dec 2011 16:20:06 +0100 |
parents | f0afece42f48 |
children |
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% 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