【数字信号处理】基于matlab GUI IIR低通+FIR高通信号时域+频谱分析【含Matlab源码 1029期】
【摘要】
一、数字信号处理系统简介
理论知识参考文献：基于GUI的《数字信号处理》教学演示系统的设计 基于Matlab GUI界面的数字信号处理辅助教学系统 基于MATLAB的数字信号处理实验平台
二、部分源代...
一、数字信号处理系统简介
理论知识参考文献：基于GUI的《数字信号处理》教学演示系统的设计
基于Matlab GUI界面的数字信号处理辅助教学系统
基于MATLAB的数字信号处理实验平台
二、部分源代码
function varargout = program1(varargin)
% PROGRAM1 MATLAB code for program1.fig
% PROGRAM1, by itself, creates a new PROGRAM1 or raises the existing
% singleton*.
%
% H = PROGRAM1 returns the handle to a new PROGRAM1 or the handle to
% the existing singleton*.
%
% PROGRAM1('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in PROGRAM1.M with the given input arguments.
%
% PROGRAM1('Property','Value',...) creates a new PROGRAM1 or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before program1_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to program1_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 program1
% Last Modified by GUIDE v2.5 03-Jan-2020 09:14:21
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @program1_OpeningFcn, ...
'gui_OutputFcn', @program1_OutputFcn, ...
'gui_LayoutFcn', [] , ...
'gui_Callback', []);
if nargin && ischar(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 program1 is made visible.
function program1_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 program1 (see VARARGIN)
% Choose default command line output for program1
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes program1 wait for user response (see UIRESUME)
% uiwait(handles.figure1);
set(handles.uipanel1,'visible','off');
set(handles.uipanel2,'visible','off');
% --- Outputs from this function are returned to the command line.
function varargout = program1_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 selection change in popupmenu1.
function popupmenu1_Callback(hObject, eventdata, handles)
% hObject handle to popupmenu1 (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 popupmenu1 contents as cell array
% contents{get(hObject,'Value')} returns selected item from popupmenu1
% --- Executes during object creation, after setting all properties.
function popupmenu1_CreateFcn(hObject, eventdata, handles)
% hObject handle to popupmenu1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: popupmenu controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
% --- 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)
cla(handles.axes1,'reset');
cla(handles.axes2,'reset');
cla(handles.axes3,'reset');
axes(handles.axes1);
cla;
L=str2num(get(handles.edit1,'String'));
A=str2num(get(handles.edit2,'String'));
f1=str2num(get(handles.edit3,'String'));
f2=str2num(get(handles.edit4,'String'));
Phi=str2num(get(handles.edit5,'String'));
a=str2num(get(handles.edit6,'String'));
Sig=str2num(get(handles.edit7,'String'));
fs=1000;
phi=Phi*pi/180;
popup_sel_index = get(handles.popupmenu1, 'Value');
switch popup_sel_index
case 1
t=0:0.001:L;
y=A*sin(2*pi*f1*t+phi);
plot(t,y);
set(gca,'Xlim',[0 1]);
title('原始信号');
case 2
t=0:0.001:L;
y=A*square(2*pi*f1*t,a);
plot(t,y);
set(gca,'Xlim',[0 1]);
title('原始信号');
case 3
t=0:0.001:L;
y=A*sin(2*pi*f1*t)+A*sin(2*pi*f2*t);
plot(t,y);
set(gca,'Xlim',[0 1]);
title('原始信号');
case 4
n=round(1000*L);
t=linspace(0,L,n);
y=sqrt(Sig)*randn(1,n);
plot(t,y);
set(gca,'Xlim',[0 1]);
title('原始信号');
case 5
n=round(1000*L);
t=linspace(0,L,n);
y=sqrt(Sig)*rand(1,n);
plot(t,y);
set(gca,'Xlim',[0 1]);
title('原始信号');
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 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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
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 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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
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
三、运行结果
四、matlab版本及参考文献
1 matlab版本
2014a
2 参考文献
[1] 沈再阳.精通MATLAB信号处理[M].清华大学出版社，2015.
[2]高宝建,彭进业,王琳,潘建寿.信号与系统——使用MATLAB分析与实现[M].清华大学出版社，2020.
[3]王文光,魏少明,任欣.信号处理与系统分析的MATLAB实现[M].电子工业出版社，2018.
[4]高彦彦,张晶,李莉,贾英茜.基于GUI的《数字信号处理》教学演示系统的设计[J].教育教学论坛. 2019,(48)
[5]李俊,张淑玲,帅晶.基于Matlab GUI界面的数字信号处理辅助教学系统[J].信息通信. 2020,(08)
[6]朱御康.基于MATLAB的数字信号处理实验平台[J].通信电源技术. 2021,38(03)
文章来源: qq912100926.blog.csdn.net，作者：海神之光，版权归原作者所有，如需转载，请联系作者。
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