Mercurial > hg > ltpda
diff m-toolbox/classes/@specwin/win_kaiser.m @ 0:f0afece42f48
Import.
author | Daniele Nicolodi <nicolodi@science.unitn.it> |
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date | Wed, 23 Nov 2011 19:22:13 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/m-toolbox/classes/@specwin/win_kaiser.m Wed Nov 23 19:22:13 2011 +0100 @@ -0,0 +1,38 @@ +% WIN_KAISER returns Kaiser window, with N points and psll peak sidelobe level. +% If mode == 'define', the window values will be empty and all the features +% If mode == 'build', the window values will be calculated +% +% A Grynagier 03/01/2010 +% +% $Id: win_kaiser.m,v 1.2 2011/05/25 07:30:08 mauro Exp $ +% + +function varargout = win_kaiser(w, mode, N, psll) + + switch lower(mode) + + case 'build' + n_args = nargin; + if n_args < 3 + N = w.len; + end + + % Compute window samples + % - here we adjust to make the window asymmetric + v = kaiser(N+1, pi*w.alpha)'; + varargout{1} = v(1:end-1); + + case 'define' + % Make window struct + w.type = 'Kaiser'; + w.alpha = specwin.kaiser_alpha(psll); + w.psll = psll; + w.rov = specwin.kaiser_rov(w.alpha); + w.nenbw = specwin.kaiser_nenbw(w.alpha); + w.w3db = specwin.kaiser_w3db(w.alpha); + w.flatness = specwin.kaiser_flatness(w.alpha); + w.len = N; + w.skip = 0; + + varargout{1} = w; + end