tfr_get_win.m

来自「linear time－frequency toolbox」· M 代码 · 共 32 行

function g=tfr_get_win(self,win,L);
%TFR_GET_WIN   Get analysis/synthesis window.
%   Usage:  g=tfr_get_win(tfr,win,L);
%
%   TFR_GET_WIN(tfr,'analysis',L) will return the analysis window
%   corresponding to a transform of length L.
%   Instead of 'analysis' you may use 'a' or 1.
%
%   To get the synthesis window, use 'synthesis', 's' or 2.
%
%   SEE ALSO:  TFR_CREATE

error(nargchk(3,3,nargin));

global TF_STORAGE;

% Verify that TF_STORAGE has been initialized
if prod(size(TF_STORAGE))==0
  error('Please run TFR_CREATE to obtain a valid handle.');
end;

switch win
  case {'analysis','a',1}
    winpos=assert_winready(self,L,1,0,0,'TFR_GET_WIN');
  case {'synthesis','s',2}          
    winpos=assert_winready(self,L,2,0,0,'TFR_GET_WIN');    
  otherwise
    error('Unknown window type.');
end;

g=TF_STORAGE.data{self}.w{winpos}.g;