loadsp3.m

这是一个用于语音信号处理的工具箱

% Function : load speech file.
%function speech=loadsp()

cwd=pwd;

%ax1=axes('Position',[0.05 0.80 0.8 0.1]);
%ax2=axes('Position',[0.05 0.55 0.8 0.1]);
%ax3=axes('Position',[0.05 0.30 0.8 0.1]);
%ax4=axes('Position',[0.05 0.05 0.8 0.1]);


[fname pathname]=uigetfile('*.dat','Load input file(ASCII)');
   
S=sprintf('cd %s',cwd);
eval(S);

if fname ~= 0
   S=sprintf('Loading data .....');
   disp(S);
   S=sprintf('load %s%s',pathname,fname);
   eval(S);
   
   o_fname=fname;
   o_pname=pathname;
   name=basename(fname);
   
else
   fname=o_fname;
   pathname=o_pname;
end

signal4=eval(name);



%define some variables
LEFT_4=1;
LENS=length(signal4);
RIGHT_4=LENS;
fram_len_init=250;
zoom_level=1;
LEFT_4=LEFT;
RIGHT_4=RIGHT;


play3_pb=uicontrol('Style','Pushbutton', ...
   'String','play','Units','normalized','Position',[.88 .13 .095 .03],...
   'Callback', 'play(signal4(LEFT:RIGHT));');
spec3_pb=uicontrol('Style','Pushbutton', ...
   'String','spectrogram','Units','normalized','Position',[.88 .09 .095 .03],...
   'Callback', 'sgram4'); 
wave3_pb=uicontrol('Style','Pushbutton', ...
   'String','waveform','Units','normalized','Position',[.88 .05 .095 .03],...
   'Callback', 'axes(ax4);plot((LEFT:RIGHT),signal4(LEFT:RIGHT),''color'',LINE_COLOR);title(''Speech signal 4'');');

if exist('signal4') == 1
   LEFT_L=[LEFT_1 LEFT_2 LEFT_3 LEFT_4];
   LEFT=min(LEFT_L);
   RIGHT_R=[RIGHT_1 RIGHT_2 RIGHT_3 RIGHT_4];
   RIGHT=max(RIGHT_R);
      for k=RIGHT_4:RIGHT
      signal4(k+1)=0;
   	end
      signal4=signal4(LEFT_4:RIGHT);
      axes(ax4);
      plot((LEFT:RIGHT),signal4(LEFT:RIGHT),'color',LINE_COLOR);title ('Speech signal 4');
end

if exist('signal3') == 1
   LEFT_L=[LEFT_1 LEFT_2 LEFT_3 LEFT_4];
   LEFT=min(LEFT_L);
   RIGHT_R=[RIGHT_1 RIGHT_2 RIGHT_3 RIGHT_4];
   RIGHT=max(RIGHT_R);
      for k=RIGHT_3:RIGHT
      signal3(k+1)=0;
   	end
      signal3=signal3(LEFT_3:RIGHT);
      axes(ax3);
      plot((LEFT:RIGHT),signal3(LEFT:RIGHT),'color',LINE_COLOR);title ('Speech signal 3');
end

if exist('signal2') == 1
   LEFT_L=[LEFT_1 LEFT_2 LEFT_3 LEFT_4];
   LEFT=min(LEFT_L);
   RIGHT_R=[RIGHT_1 RIGHT_2 RIGHT_3 RIGHT_4];
   RIGHT=max(RIGHT_R);
      for k=RIGHT_2:RIGHT
      signal2(k+1)=0;
   	end
      signal2=signal2(LEFT_2:RIGHT);
      axes(ax2);
      plot((LEFT:RIGHT),signal2(LEFT:RIGHT),'color',LINE_COLOR);title ('Speech signal 2');
end
if exist('signal1') == 1
   LEFT_L=[LEFT_1 LEFT_2 LEFT_3 LEFT_4];
   LEFT=min(LEFT_L);
   RIGHT_R=[RIGHT_1 RIGHT_2 RIGHT_3 RIGHT_4];
   RIGHT=max(RIGHT_R);
      for k=RIGHT_1:RIGHT
      signal1(k+1)=0;
   	end
      signal1=signal1(LEFT_1:RIGHT);
      axes(ax1);
      plot((LEFT:RIGHT),signal1(LEFT:RIGHT),'color',LINE_COLOR);title ('Speech signal 1');
end



axes('Position',[.05 .05 .8 .9],'Box','on','Visible','off');