fftpin.m

用matlab的GUI做的一个数字信号处理系统

function varargout = fftpin(varargin)
% FFTPIN M-file for fftpin.fig
%      FFTPIN, by itself, creates a new FFTPIN or raises the existing
%      singleton*.
%
%      H = FFTPIN returns the handle to a new FFTPIN or the handle to
%      the existing singleton*.
%
%      FFTPIN('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in FFTPIN.M with the given input arguments.
%
%      FFTPIN('Property','Value',...) creates a new FFTPIN or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before fftpin_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to fftpin_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 fftpin

% Last Modified by GUIDE v2.5 10-Jul-2008 10:06:35

% Begin initialization code - DO NOT EDIT
global b;
global out;
global nak;
global t;
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @fftpin_OpeningFcn, ...
                   'gui_OutputFcn',  @fftpin_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 fftpin is made visible.
function fftpin_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 fftpin (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = fftpin_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 on button press in fftpin_button.
function fftpin_button_Callback(hObject, eventdata, handles)
global out;
global nak;
fu=fft(out,1024);
f1=(0:1023)/1024*nak;
findobj('tag','fft_axes');
plot(f1,abs(fu),'parent',handles.fft_axes); 
% hObject    handle to fftpin_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in time_button.
function time_button_Callback(hObject, eventdata, handles)
global t;
global nak;
global out;
findobj('tag','tim_axes');
stem(t,out);
% hObject    handle to time_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in back3_button.
function back3_button_Callback(hObject, eventdata, handles)
fig=openfig('filterfig.fig');
handles = guihandles(fig);
guidata(fig, handles);
% hObject    handle to back3_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in quit4_button.
function quit4_button_Callback(hObject, eventdata, handles)
close all;
% hObject    handle to quit4_button (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)