Mercurial > hg > ltpda
view m-toolbox/classes/@miir/mkbandreject.m @ 39:11e3ed9d2115 database-connection-manager
Implement databases listing in database connection dialog
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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% MKBANDREJECT return a low pass filter miir(). A Butterworth filter is used. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % DESCRIPTION: MKBANDREJECT return a low pass filter miir(). % A Butterworth filter is used. % % CALL: f = mkbandreject(f, pl) % % VERSION: $Id: mkbandreject.m,v 1.11 2011/04/04 11:37:02 hewitson Exp $ % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% function f = mkbandreject(f, pl) g = find(pl, 'gain'); fc = find(pl, 'fc'); fs = find(pl, 'fs'); order = find(pl, 'order'); ripple = find(pl, 'ripple'); utils.helper.checkFilterOptions(pl); % Build filter coefficients [a, b] = cheby1(order, ripple, 2.*fc./fs, 'stop'); % Set filter properties f.name = 'bandreject'; f.fs = fs; f.a = g.*a; f.b = b; f.histin = zeros(1,f.ntaps-1); % initialise input history f.histout = zeros(1,f.ntaps-1); % initialise output history end