gmgui.asv

数字信号处理：1.卷积 2.抽样 3.滤波器

function varargout = GMGUI(varargin)
% GMGUI M-file for GMGUI.fig
%      GMGUI, by itself, creates a new GMGUI or raises the existing
%      singleton*.
%
%      H = GMGUI returns the handle to a new GMGUI or the handle to
%      the existing singleton*.
%
%      GMGUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in GMGUI.M with the given input arguments.
%
%      GMGUI('Property','Value',...) creates a new GMGUI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before GMGUI_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to GMGUI_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help GMGUI

% Last Modified by GUIDE v2.5 09-Jan-2008 20:09:35

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @GMGUI_OpeningFcn, ...
                   'gui_OutputFcn',  @GMGUI_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin & isstr(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before GMGUI is made visible.
function GMGUI_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 of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to GMGUI (see VARARGIN)

% Choose default command line output for GMGUI
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes GMGUI wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = GMGUI_OutputFcn(hObject, eventdata, handles)
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit1_Callback(hObject, eventdata, handles)
% hObject    handle to edit1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit1 as text
%        str2double(get(hObject,'String')) returns contents of edit1 as a double


% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit2_Callback(hObject, eventdata, handles)
% hObject    handle to edit2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit2 as text
%        str2double(get(hObject,'String')) returns contents of edit2 as a double


% --- Executes during object creation, after setting all properties.
function edit3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit3_Callback(hObject, eventdata, handles)
% hObject    handle to edit3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit3 as text
%        str2double(get(hObject,'String')) returns contents of edit3 as a double


% --- Executes during object creation, after setting all properties.
function edit4_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function edit4_Callback(hObject, eventdata, handles)
% hObject    handle to edit4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit4 as text
%        str2double(get(hObject,'String')) returns contents of edit4 as a double


% --- Executes on button press in pushbutton1.
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)
clear i;
set(handles.edit1,'enable','off');
set(handles.edit2,'enable','off');
set(handles.popupmenu4,'enable','off');
set(handles.edit3,'enable','off');
set(handles.edit4,'string','计算中');
set(handles.pushbutton1,'enable','off');
x11=get(handles.edit1,'string');
if isempty(x11)
        x1=[1 2 3 4 5 6 7 8];
        set(handles.edit1,'string',num2str(x1));
    else   
        x1=str2num(x11);
end
k1=length(x1);
x22=get(handles.edit2,'string');
if isempty(x22)
        x2=[1 2 3 4 5];
        set(handles.edit2,'string',num2str(x2));
    else   
        x2=str2num(x22);
end
k2=length(x2);
n1=0:(k1-1);
n2=0:(k2-1);
n3=0:(k1+k2-2);
kk=get(handles.popupmenu4,'value');
switch(kk)
    case 1
        x5=zeros(1,k1+k2-1);
        x3=conj(x2)'*x1;%卷积和的序列阵表
        axes(handles.axes6),stem(n1,x1,'.');
        axis([-k2 k1+k2-1 (min([x1,x2])<0)*min([x1,x2]) max([x1,x2])]);
        ylabel('x1(n)');
        axes(handles.axes9),stem(n2,x2,'.');
        axis([-k2 k1+k2-1 (min([x1,x2])<0)*min([x1,x2]) max([x1,x2])]);
        ylabel('x2(n)');
        for i=0:(k1+k2-2)
            sum=0;
            x4=zeros(1,k1+k2-1);
            for t=intersect((-n2+i),n1)+1
                x4(t)=x3(i+2-t,t);%求乘积序列
                sum=sum+x4(t);
            end
            x5(i+1)=sum;
            pause;
            drawnow
            string2=['x1(n)×x2(',num2str(i),'-n)'];
            string3=['x2(',num2str(i),'-n)'];
            axes(handles.axes6),stem(n1,x1,'.');
            axis([-k2 k1+k2-1 (min([x1,x2])<0)*min([x1,x2]) max([x1,x2])]);