fr_lp.m

这是一个用于语音信号处理的工具箱

%
% Callback function for LPC analysis button in the Frequency Analysis window
% Author : Minkyu Lee
% Date : 27-Feb-1995
%
% Modified by Karthik May 27 1997
% Modified by D. G. Childers

freq_lp_mark_flag=0;
lp_frame_len=2^9;
lp_window=1;

% Set position and size of analysis window

PV=[2 265 285 104];
s2 = 'Linear Prediction Analysis';


% Open analysis window
while exist('freq_lp_win_h')==1
   try1 = 'get(freq_lp_win_h,''position'');';
   eval(try1,catch2);
   if check ==0
      clear freq_lp_win_h;
      check = 1;
      break;
   end
   s1 = get(freq_lp_win_h,'Name');
   if ~strcmp(s1,s2)
      clear freq_lp_win_h;
      break;
   end
   figure(freq_lp_win_h);
   break;
end;

if exist('freq_lp_win_h')~=1;
	freq_lp_win_h=figure('Position',PV,...
		'Resize','on',...
		'Numbertitle','off',...
		'color',BACK_COLOR,...
		'Name',s2);

   lp_po_method_h=uicontrol('Style','popup',...
      'Position',[10 70 130 30],...
      'String','Autocorrelation|Covariance|Modified cov.|Burg|Recursive MLE|PLP method',...
      'Callback','lp_go');

   lp_pb_prop_h=uicontrol('Style','pushbutton',...
      'Position',[150 70 130 30],...
      'String','Property',...
      'Callback','lp_pr');

   lp_pb_save_h=uicontrol('Style','pushbutton',...
      'Position',[10 20 130 30],...
      'String','Save(ascii)',...
      'Callback','lp_ma_arma_sa');

   lp_pb_ok_h=uicontrol('Style','pushbutton',...
      'Position',[150 20 130 30],...
      'String','Cancel',...
      'Callback','fr_an_ok');
end;