1 簡(jiǎn)介

面對(duì)龐雜繁多的原始信號(hào),?如何提取所需信號(hào)、抑制不需要的信號(hào)這就需要使用濾波器。濾波器的作用主要是選擇所需頻帶的信號(hào)內(nèi)容而抑制不需要的其他頻帶的信號(hào)內(nèi)容。數(shù)字濾波器因其精度高、可靠性好、靈活性大等優(yōu)點(diǎn),?在語(yǔ)音信號(hào)處理、信號(hào)頻譜估計(jì)、信號(hào)去噪、無(wú)線通信中的數(shù)字變頻以及圖像處理等工程實(shí)際應(yīng)用中都很廣泛。根據(jù)其沖擊響應(yīng)函數(shù)的時(shí)域特性可將數(shù)字濾波器分為IIR（有限長(zhǎng)沖擊響應(yīng)）和FIR（無(wú)限長(zhǎng)沖擊響應(yīng)）。作為強(qiáng)大的計(jì)算軟件,?MATLAB提供了編寫圖形用戶界面的功能。所謂圖形用戶界面,?簡(jiǎn)稱為GUI,?是由各種圖形對(duì)象,?如圖形窗口菜單按鈕、文本框等構(gòu)建的用戶界面。

MATALB?可以創(chuàng)建圖形用戶界面GUI ( GraphicalUser Interface) ,它是用戶和計(jì)算機(jī)之間交流的工具。MATLAB?將所有GUl?支持的用戶控件都集成在這個(gè)環(huán)境中并提供界面外觀、屬性和行為響應(yīng)方式的設(shè)置方法,隨著版本的提高,這種能力還會(huì)不斷加強(qiáng)。而且具有強(qiáng)大的繪圖功能,可以輕松的獲得更高質(zhì)量的曲線圖。

2 部分代碼

function varargout = Filter(varargin)% FILTER M-file for Filter.fig% ? ? ?FILTER, by itself, creates a new FILTER or raises the existing% ? ? ?singleton*.%% ? ? ?H = FILTER returns the handle to a new FILTER or the handle to% ? ? ?the existing singleton*.%% ? ? ?FILTER('CALLBACK',hObject,eventData,handles,...) calls the local% ? ? ?function named CALLBACK in FILTER.M with the given input arguments.%% ? ? ?FILTER('Property','Value',...) creates a new FILTER or raises the% ? ? ?existing singleton*. ?Starting from the left, property value pairs are% ? ? ?applied to the GUI before Filter_OpeningFunction gets called. ?An% ? ? ?unrecognized property name or invalid value makes property application% ? ? ?stop. ?All inputs are passed to Filter_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 Filter% Last Modified by GUIDE v2.5 03-Jun-2021 01:02:47% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', ? ? ? mfilename, ... ? ? ? ? ? ? ? ? ? 'gui_Singleton', ?gui_Singleton, ... ? ? ? ? ? ? ? ? ? 'gui_OpeningFcn', @Filter_OpeningFcn, ... ? ? ? ? ? ? ? ? ? 'gui_OutputFcn', ?@Filter_OutputFcn, ... ? ? ? ? ? ? ? ? ? 'gui_LayoutFcn', ?[] , ... ? ? ? ? ? ? ? ? ? 'gui_Callback', ? []);if nargin && ischar(varargin{1}) ? ?gui_State.gui_Callback = str2func(varargin{1});endif 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 Filter is made visible.function Filter_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 Filter (see VARARGIN)% Choose default command line output for Filterhandles.output = hObject;% Update handles structureguidata(hObject, handles);% UIWAIT makes Filter wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.function varargout = Filter_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 structurevarargout{1} = handles.output;function Fs_Callback(hObject, eventdata, handles)% hObject ? ?handle to Fs (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 Fs as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Fs as a double% --- Executes during object creation, after setting all properties.function Fs_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Fs (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');endfunction Fp1_Callback(hObject, eventdata, handles)%檢查輸入的通帶邊緣頻率是否【0，1】Fs_value=str2double(get(handles.Fs,'String'));Fp1_value=str2double(get(handles.Fp1,'String'));wp1=2*Fp1_value/Fs_value;if(wp1>=1) ? ?errordlg('wp1=2*Fp1/Fs, 歸一化頻率不在【0，1】范圍內(nèi)，請(qǐng)輸入正確的參數(shù)','錯(cuò)誤信息') end% hObject ? ?handle to Fp1 (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 Fp1 as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Fp1 as a double% --- Executes during object creation, after setting all properties.function Fp1_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Fp1 (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');endfunction Fp2_Callback(hObject, eventdata, handles)%檢查輸入的通帶邊緣頻率是否【0，1】Fs_value=str2double(get(handles.Fs,'String'));Fp2_value=str2double(get(handles.Fp2,'String'));wp2=2*Fp2_value/Fs_value;if(wp2>=1) ? ?errordlg('wp2=2*Fp2/Fs, 歸一化頻率不在【0，1】范圍內(nèi)，請(qǐng)輸入正確的參數(shù)','錯(cuò)誤信息') end% hObject ? ?handle to Fp2 (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 Fp2 as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Fp2 as a double% --- Executes during object creation, after setting all properties.function Fp2_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Fp2 (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');endfunction Fs1_Callback(hObject, eventdata, handles)%檢查輸入的阻帶邊緣頻率是否【0，1】Fs_value=str2double(get(handles.Fs,'String'));Fs1_value=str2double(get(handles.Fs1,'String'));ws1=2*Fs1_value/Fs_value;if(ws1>=1) ? ?errordlg('ws1=2*Fs1/Fs, 歸一化頻率不在【0，1】范圍內(nèi)，請(qǐng)輸入正確的參數(shù)','錯(cuò)誤信息') end% hObject ? ?handle to Fs1 (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 Fs1 as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Fs1 as a double% --- Executes during object creation, after setting all properties.function Fs1_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Fs1 (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');endfunction Fs2_Callback(hObject, eventdata, handles)%檢查輸入的阻帶邊緣頻率是否【0，1】Fs_value=str2double(get(handles.Fs,'String'));Fs2_value=str2double(get(handles.Fs2,'String'));ws2=2*Fs2_value/Fs_value;if(ws2>=1) ? ?errordlg('ws2=2*Fs2/Fs, 歸一化頻率不在【0，1】范圍內(nèi)，請(qǐng)輸入正確的參數(shù)','錯(cuò)誤信息') end% hObject ? ?handle to Fs2 (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 Fs2 as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Fs2 as a double% --- Executes during object creation, after setting all properties.function Fs2_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Fs2 (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');endfunction Rp_Callback(hObject, eventdata, handles)% hObject ? ?handle to Rp (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 Rp as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Rp as a double% --- Executes during object creation, after setting all properties.function Rp_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Rp (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');endfunction Rs_Callback(hObject, eventdata, handles)% hObject ? ?handle to Rs (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 Rs as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Rs as a double% --- Executes during object creation, after setting all properties.function Rs_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Rs (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% --- Executes on selection change in FilterDesign.function FilterDesign_Callback(hObject, eventdata, handles) ?AutoRun_value=get(handles.AutoRun,'Value'); ?if(AutoRun_value==1) ? ? AutoChoose(handles) ?end% hObject ? ?handle to FilterDesign (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: contents = get(hObject,'String') returns FilterDesign contents as cell array% ? ? ? ?contents{get(hObject,'Value')} returns selected item from FilterDesign% --- Executes during object creation, after setting all properties.function FilterDesign_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to FilterDesign (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 selection change in FilterType.function FilterType_Callback(hObject, eventdata, handles)%當(dāng)選擇不同的濾波器類型時(shí)屏蔽相應(yīng)的輸入 ?FilterType_value=get(handles.FilterType,'Value'); ? ? ? ? ? ? ? %當(dāng)選擇低通濾波器時(shí)屏蔽Fp2、Fs2 ? ? ? ? ? ? ? ? if(FilterType_value==1) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? set(handles.Fp2,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.Fs2,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text17,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text19,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text6,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text10,'visible','off'); ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?%當(dāng)選擇高通濾波器時(shí)屏蔽Fp2、Fs2 ? ? ? ? ? ? ? ? else ? ? ? ? ? ? ? ? ? ?if(FilterType_value==2) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? set(handles.Fp2,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.Fs2,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text17,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text19,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text6,'visible','off'); ? ? ? ? ? ? ? ? ? ? set(handles.text10,'visible','off'); ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? %當(dāng)選擇帶通濾波器時(shí)顯示Fp2、Fs2 ? ? ? ? ? ? ? ? ?else ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?if(FilterType_value==3) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? set(handles.Fp2,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.Fs2,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.text17,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.text19,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.text6,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.text10,'visible','on'); ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?else ? ? ? ? ? ? ? ? ? ?if(FilterType_value==4) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? set(handles.Fp2,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.Fs2,'visible','on'); ? ? ? ? ? ? ? ? ? ? ?set(handles.text17,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.text19,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.text6,'visible','on'); ? ? ? ? ? ? ? ? ? ? set(handles.text10,'visible','on'); ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?end ? ? ? ? ? ? ? ? ? ?end ? ? ? ? ? ? ? ? ? ?end ? ? ? ? ? ? ? ? end% hObject ? ?handle to FilterType (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: contents = get(hObject,'String') returns FilterType contents as cell array% ? ? ? ?contents{get(hObject,'Value')} returns selected item from FilterType% --- Executes during object creation, after setting all properties.function FilterType_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to FilterType (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 selection change in DisplayType.function DisplayType_Callback(hObject, eventdata, handles) ?AutoRun_value=get(handles.AutoRun,'Value'); ?if(AutoRun_value==1) ? ? AutoChoose(handles) ?end% hObject ? ?handle to DisplayType (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: contents = get(hObject,'String') returns DisplayType contents as cell array% ? ? ? ?contents{get(hObject,'Value')} returns selected item from DisplayType% --- Executes during object creation, after setting all properties.function DisplayType_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to DisplayType (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 selection change in Windows.function Windows_Callback(hObject, eventdata, handles) ?AutoRun_value=get(handles.AutoRun,'Value'); ?if(AutoRun_value==1) ? ? AutoChoose(handles) ?end% hObject ? ?handle to Windows (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: contents = get(hObject,'String') returns Windows contents as cell array% ? ? ? ?contents{get(hObject,'Value')} returns selected item from Windows% --- Executes during object creation, after setting all properties.function Windows_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Windows (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 selection change in DigitalFilter.function DigitalFilter_Callback(hObject, eventdata, handles) ?%選擇IIR或者FIR屏蔽相應(yīng)的選項(xiàng) ?DigitalFilter_value=get(handles.DigitalFilter,'Value'); ? ? ? ? ? ? ? ?%當(dāng)選擇了IIR時(shí)，使窗口選項(xiàng)屏蔽 ? ? ? ? ? ? ? ? if(DigitalFilter_value==1) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? set(handles.FilterDesign,'enable','on'); ? ? ? ? ? ? ? ? ? ? set(handles.Windows,'enable','off'); ? ? ? ? ? ? ? ? ?%當(dāng)選擇了FIR時(shí)，使濾波器選擇選項(xiàng)屏蔽 ? ? ? ? ? ? ? ? ? else ? ? ? ? ? ? ? ? ? ? ?set(handles.FilterDesign,'enable','off'); ? ? ? ? ? ? ? ? ? ? set(handles.Windows,'enable','on') ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? end ?AutoRun_value=get(handles.AutoRun,'Value'); ?if(AutoRun_value==1) ? ? AutoChoose(handles) ?end% hObject ? ?handle to DigitalFilter (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: contents = get(hObject,'String') returns DigitalFilter contents as cell array% ? ? ? ?contents{get(hObject,'Value')} returns selected item from DigitalFilter% --- Executes during object creation, after setting all properties.function DigitalFilter_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to DigitalFilter (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 Run.function Run_Callback(hObject, eventdata, handles)AutoChoose(handles)% hObject ? ?handle to Run (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hint: get(hObject,'Value') returns toggle state of Run% --- Executes on button press in Quit.function Quit_Callback(hObject, eventdata, handles)close% hObject ? ?handle to Quit (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hint: get(hObject,'Value') returns toggle state of Quit% --- Executes on button press in AutoRun.function AutoRun_Callback(hObject, eventdata, handles) ?AutoRun_value=get(handles.AutoRun,'Value'); ?if(AutoRun_value==1) ? ? AutoChoose(handles) ?end% hObject ? ?handle to AutoRun (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hint: get(hObject,'Value') returns toggle state of AutoRun% --- Executes during object creation, after setting all properties.function Magnitude_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Magnitude (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: place code in OpeningFcn to populate Magnitude% --- Executes during object creation, after setting all properties.function Phase_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Phase (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: place code in OpeningFcn to populate Phase% --- Executes on button press in MinOrder.function MinOrder_Callback(hObject, eventdata, handles)%當(dāng)不選擇輸入濾波器階數(shù)時(shí)，即使用最小階數(shù)時(shí)，選擇屏蔽階數(shù)輸入 MinOrder_value=get(handles.MinOrder,'Value'); ? ? ? ? ? ? ? ? if(MinOrder_value==1) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? set(handles.Order,'visible','off'); ? ? ? ? ? ? ? ? else ? ? ? ? ? ? ? ? ? ? ?set(handles.Order,'visible','on'); ? ? ? ? ? ? ? ? ? ? ? ? ? end% hObject ? ?handle to MinOrder (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hint: get(hObject,'Value') returns toggle state of MinOrderfunction MinOrderDisplay_Callback(hObject, eventdata, handles)% hObject ? ?handle to MinOrderDisplay (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 MinOrderDisplay as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of MinOrderDisplay as a double% --- Executes during object creation, after setting all properties.function MinOrderDisplay_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to MinOrderDisplay (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');endfunction Order_Callback(hObject, eventdata, handles)% hObject ? ?handle to Order (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 Order as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Order as a double% --- Executes during object creation, after setting all properties.function Order_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Order (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% --- Executes on button press in CustomOrderButton.function CustomOrderButton_Callback(hObject, eventdata, handles) ?CustomOrderButton_value=get(handles.CustomOrderButton,'Value'); ? ? ? ? ? ? ? ? if(CustomOrderButton_value==0) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? set(handles.Order,'visible','off'); ? ? ? ? ? ? ? ? else ? ? ? ? ? ? ? ? ? ? ?set(handles.Order,'visible','on'); ? ? ? ? ? ? ? ? ? ? ? ? ? end% hObject ? ?handle to CustomOrderButton (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hint: get(hObject,'Value') returns toggle state of CustomOrderButton% --- Executes during object creation, after setting all properties.function uipanel11_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to uipanel11 (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called

3 仿真結(jié)果

4 參考文獻(xiàn)

[1]張學(xué)敏. 基于Matlab的FIR帶通濾波器的設(shè)計(jì)與仿真[J]. 長(zhǎng)春工程學(xué)院學(xué)報(bào)：自然科學(xué)版, 2007(4):3.

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