juxing.asv

语音处理平台 可以分析语音能量 第一振峰频率等数据

close all;
clc;

PV=[235 180 664 463];
m_gui_luyin=figure('Position',PV,...
		'Resize','off',...
		'Numbertitle','off',...%'color',BACK_COLOR,...
		'Name','预处理');
set(m_gui_luyin,'MenuBar','none');
 uicontrol('Style','frame',...
      'Position',[5 5 180 455],...
      'Callback',[]);
  uicontrol('Style','pushbutton',...
      'Position',[10 340 165 30],...
      'String','载入语音',...
      'Callback','loadsp');
  
uicontrol('Style','pushbutton',...
      'Position',[10 280 165 30],...
      'String','去噪信号',...
      'Callback','quzao');   
   uicontrol('Style','pushbutton',...
      'Position',[10 220 165 30],...
      'String','加矩形窗后信号',...
      'Callback','juxing');
     uicontrol('Style','pushbutton',...
      'Position',[10 160 165 30],...
      'String','加汉明窗后信号',...
      'Callback','hanming');
       
  uicontrol('Style','pushbutton',...
      'Position',[10 100 165 30],...
      'String','返回',...
      'Callback','close_yuchuli');

ax1=axes('Position',[235 180 664 463]);
axes('Position',[.32 .75 .65 .16],'Box','on','Visible','on');
plot(A);
title('原始信号');


axes('Position',[.32 .50 .65 .16],'Box','on','Visible','on');
s=A;
fs=FS;
n=5;fc1=60;fc2=900;
[b,a]=butter(n,[fc1/(fs/2) fc2/(fs/2)]);
y=filter(b,a,s);
plot(y);
title('去噪信号');

axes('Position',[.32 .25 .65 .16],'Box','on','Visible','on');
s=A;
fs=FS;
n=5;fc1=60;fc2=900;
[b,a]=butter(n,[fc1/(fs/2) fc2/(fs/2)]);
y=filter(b,a,s);
total=length(y);
    W=rectwin(640);
    for i=1:(total/160-3)
        for j=1:640,
             B(i,j)=y(j+(i-1)*160)*W(j);
        end
    end
plot(B);
title('加矩形窗后信号');