基于MATLABGUI的数字实验信号平台的设计

1、 基于Matlab GUI的数字实验信号平台的设计学 校：太原工业学院班级学号： 122022328 姓 名： 马 越 1. 实现步骤：第一步（主界面）： 主界面主要代码：1.进入程序加载图片：function untitledmain_OpeningFcn(hObject, eventdata, handles, varargin)% This function has no output args, see OutputFcn.% hObject handle to figure% eventdata reserved - to be defined in a future version

2、 of MATLAB% handles structure with handles and user data (see GUIDATA)% varargin command line arguments to untitledmain (see VARARGIN)% Choose default command line output for untitledmainhandles.output = hObject; guidata(hObject, handles);A = imread('D:DocumentsMATLABbackground.jpg');axes(ha

3、ndles.axes3);imshow(A);B = imread('D:DocumentsMATLABhydrangeas.jpg');axes(handles.axes5);imshow(B);2.pushbutton1按钮进入“基本离散信号及计算”界面function pushbutton1_Callback(hObject, eventdata, handles)% hObject handle to pushbutton1 (see GCBO)% eventdata reserved - to be defined in a future version of MAT

4、LAB% handles structure with handles and user data (see GUIDATA)close;untitledjisuan;3. pushbutton2按钮进入”matlab在dft中的应用”界面function pushbutton2_Callback(hObject, eventdata, handles)% hObject handle to pushbutton2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles stru

5、cture with handles and user data (see GUIDATA)close;dft;4.pushbutton3按钮进入“离散时间系统的零极点分析”界面function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user dat

6、a (see GUIDATA)close;zerosjidian;5.pushbutton4按钮用于播放背景音乐function pushbutton4_Callback(hObject, eventdata, handles)% hObject handle to pushbutton4 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global player%for

7、i=1:1:100Y,Fs,nBits = wavread('yiruma ÁåÉù.wav');player=audioplayer(Y,Fs,nBits);for j=1:1:100i=isplaying(player); if i=0 play(player); endend%end6.pushbutton5用于实现音乐的暂停/继续播放功能function pushbutton5_Callback(hObject, eventdata, handles)% hObject handle to pushbutton5 (see GCB

8、O)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)global playery=count();if mod(y,2)=0 pause(player);else resume(player);end第二步（主子界面）：1） 基本离散信号及计算-界面主要代码如下：1.listbox1用于列出选项清单% - Executes on selection change in listbox1.fun

9、ction listbox1_Callback(hObject, eventdata, handles)% hObject handle to listbox1 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA) % Hints: contents = cellstr(get(hObject,'String') returns listbox1 content

10、s as cell array% contentsget(hObject,'Value') returns selected item from listbox1n = get(hObject,'value');switch n case 1 close; sinxulie; case 2 close; shizhishuxulie; case 3 close; fuzhishuxulie; case 4 close; danweichongji; case 5 close; danweijieyue; case 6 close; boxingbianhuan;

11、end2) “matlab在dft中的应用”界面主要代码如下：1.按此按钮可以生成三角序列function pushbutton1_Callback(hObject, eventdata, handles)% hObject handle to pushbutton1 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)a=0;n=str2num(get(handles.edi

12、t1,'string');x=zeros(size(n);for i=1:round(max(n)/2) x(i)=a; a=a+1;endfor j=round(max(n)/2)+1:max(n) x(j)=a; a=a-1;endaxes(handles.axes1);stem(n,x,'fill');2.按此按钮生成对应三角序列的dft图像function pushbutton2_Callback(hObject, eventdata, handles)% hObject handle to pushbutton2 (see GCBO)% eventda

13、ta reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)a=0;n=str2num(get(handles.edit1,'string');for u=1:round(max(n)/2) x(u)=a; a=a+1;endfor u=round(max(n)/2)+1:max(n) x(u)=a; a=a-1;end M=str2num(get(handles.edit2,'string'

14、;);U=fft(x,M);n1=0:1:M-1;axes(handles.axes2);stem(n1,abs(U),'fill');3.按此按钮对dft图像进行抽取function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user

15、data (see GUIDATA)a=0;n=str2num(get(handles.edit1,'string');for u=1:round(max(n)/2) x(u)=a; a=a+1;endfor u=round(max(n)/2)+1:max(n) x(u)=a; a=a-1;endM=str2num(get(handles.edit3,'string');U=fft(x,M);for i=1:2:M-1 Q(round(i/2)=U(i);endn1=0:1:round(M-2)/2);axes(handles.axes3);stem(n1,ab

16、s(Q),'fill');4.按此按钮对相应三角序列进行周期延拓function pushbutton4_Callback(hObject, eventdata, handles)% hObject handle to pushbutton4 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)a=0;n=str2num(get(handles.edit1,&#

17、39;string');for u=1:round(max(n)/2) x(u)=a; a=a+1;endfor u=round(max(n)/2)+1:max(n) x(u)=a; a=a-1;endfor u=max(n)+1:1000 x(u)=0;end%x1=x(1:1:size(n),zeros(1,100); m=str2num(get(handles.edit4,'string');if m<max(n) xc=x(mod(n,m)+1); c=n;else n1=0:1:max(n)+100; xc=x(mod(n1,m)+1); c=n1;en

18、daxes(handles.axes4);stem(c,xc,'fill');3） “离散时间系统的零极点分析”界面第三步（次子界面的实现）：注：次子界面为“基本离散信号及计算“的子界面1） 正弦序列主要代码：此按钮绘制“正弦序列“图像function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handle

19、s structure with handles and user data (see GUIDATA)n=0:40;x=cos(0.2*pi*n+pi/2);axes(handles.axes1);stem(n,x);2） 实指数序列主要代码：1.此按钮用于生成a=5/4时的实指数序列function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version

20、 of MATLAB% handles structure with handles and user data (see GUIDATA)n=0:20;a=5/4;x=a.n;%subplot(2,2,1);axes(handles.axes6);stem(n,x,'filled'); 2. 此按钮用于生成a=-5/4时的实指数序列% - Executes on button press in pushbutton4.function pushbutton4_Callback(hObject, eventdata, handles)% hObject handle to pu

21、shbutton4 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n=0:20;a=-5/4;x=a.n;%subplot(2,2,3);axes(handles.axes8);stem(n,x,'filled'); 3. 此按钮用于生成a=3/4时的实指数序列% - Executes on button press in pushbutton5.func

22、tion pushbutton5_Callback(hObject, eventdata, handles)% hObject handle to pushbutton5 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n=0:20;a=3/4;x=a.n;%subplot(2,2,2);axes(handles.axes7);stem(n,x,'filled

23、9;); 4. 此按钮用于生成a=-3/4时的实指数序列% - Executes on button press in pushbutton6.function pushbutton6_Callback(hObject, eventdata, handles)% hObject handle to pushbutton6 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n=

24、0:20;a=-3/4;x=a.n;%subplot(2,2,4);axes(handles.axes9);stem(n,x,'filled');3） 复指数序列(r>1)主要代码：此按钮用于生成r>1的复指数序列function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles str

25、ucture with handles and user data (see GUIDATA)n=0:20;r=1.2;w=pi/4;x=(r*exp(i*w).n;%subplot(2,2,1);axes(handles.axes1);stem(n,real(x),'filled');%subplot(2,2,2);axes(handles.axes2);stem(n,imag(x),'filled');%subplot(2,2,3);axes(handles.axes3);stem(n,abs(x),'filled');%subplot(2,

26、2,4);axes(handles.axes4);stem(n,(180/pi)*angle(x),'filled'); 复指数序列(r=1)主要代码：此按钮用于生成r=1的复指数序列function pushbutton2_Callback(hObject, eventdata, handles)% hObject handle to pushbutton2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles a

27、nd user data (see GUIDATA)n=0:20;r=1;w=pi/4;x=(r*exp(i*w).n;%subplot(2,2,1);axes(handles.axes1);stem(n,real(x),'filled');%subplot(2,2,2);axes(handles.axes2);stem(n,imag(x),'filled');%subplot(2,2,3);axes(handles.axes3);stem(n,abs(x),'filled');%subplot(2,2,4);axes(handles.axes4

28、);stem(n,(180/pi)*angle(x),'filled'); 复指数序列(0<r<1)主要代码：此按钮用于生成0<r<1的复指数序列function pushbutton1_Callback(hObject, eventdata, handles)% hObject handle to pushbutton1 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user

29、 data (see GUIDATA)n=0:20;r=0.9;w=pi/4;x=(r*exp(i*w).n;%subplot(2,2,1);axes(handles.axes1);stem(n,real(x),'filled');%subplot(2,2,2);axes(handles.axes2);stem(n,imag(x),'filled');%subplot(2,2,3);axes(handles.axes3);stem(n,abs(x),'filled');%subplot(2,2,4);axes(handles.axes4);ste

30、m(n,(180/pi)*angle(x),'filled');4） 单位冲击序列主要代码：此按钮生成”单位冲击序列”function pushbutton1_Callback(hObject, eventdata, handles)% hObject handle to pushbutton1 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)k=-10:1

31、0;n=length(k);x=zeros(1,n);x(1,11)=1;axes(handles.axes1);stem(k,x,'filled');5) 单位阶跃序列主要代码：此按钮生成“单位阶跃序列”function pushbutton1_Callback(hObject, eventdata, handles)% hObject handle to pushbutton1 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure wit

32、h handles and user data (see GUIDATA)k=-10:-1;kk=0:10;n=length(k);nn=length(kk);u=zeros(1,n);uu=ones(1,nn);axes(handles.axes1);stem(kk,uu,'filled');hold on;stem(k,u,'filled');6）f1x+f2x（序列相加）,f1x*f2x（序列相乘）主要代码：1.此按钮生成序列f1xfunction pushbutton1_Callback(hObject, eventdata, handles)% hOb

33、ject handle to pushbutton1 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n1=str2num(get(handles.edit2,'string');x1=cos(0.2*pi*n1+pi/2);axes(handles.axes3);stem(n1,x1,'filled');title('f1x'

34、;); 2.此按钮生成f1x+f2x图像% - Executes on button press in pushbutton2.function pushbutton2_Callback(hObject, eventdata, handles)% hObject handle to pushbutton2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n1=str2num

35、(get(handles.edit2,'string');x1=cos(0.2*pi*n1+pi/2);n2=str2num(get(handles.edit4,'string');p=length(n2);x2=zeros(1,p);x2(1,6)=1;y3,n=sigadd(x1,n1,x2,n2);axes(handles.axes5); stem(n,y3,'filled');title('f1k+f2k'); 3.此按钮生成序列f2x% - Executes on button press in pushbutton3.

36、function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)n2=str2num(get(handles.edit4,'string');p=length(n2);x2=zeros(1,p);

37、x2(1,6)=1; axes(handles.axes4);stem(n2,x2,'filled');title('f2x');4.此按钮生成f1x*f2xfunction pushbutton6_Callback(hObject, eventdata, handles)% hObject handle to pushbutton6 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and us

38、er data (see GUIDATA)n1=str2num(get(handles.edit2,'string');x1=cos(0.2*pi*n1+pi/2);n2=str2num(get(handles.edit4,'string');p=length(n2);x2=zeros(1,p);x2(1,6)=1;y3,n=sigcheng(x1,n1,x2,n2);axes(handles.axes6);stem(n,y3,'filled');title('f1k*f2k'); f1x-3,f2x-3（序列时移）主要代码：此按钮生成f1x-3,f2x-3的图像function pushbutton7_Callback(hObject, eventdata, handles)% hObject handle to pushbutton7 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles s