【信号处理】基于IIR低通+FIR高通信号时域和频谱分析含Matlab源码

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_mainfc结合数字滤波器的理论基础和设计方法,在MATLAB程序语言环境下,设计出有限长单位脉冲响应(FIR)数字滤波器,同时利用GUI界面设计FIR数字滤波器人机交互平台,该系统平台界面直观、操作简单且功能齐全,可实现对加噪语音信号的去噪滤波功能.平台主要包括语音信号、加噪信号、FIR数字滤波器设计和去噪信号四个模块,用户可根据读入的语音信号及噪声信号特点调整滤波器技术指标,实现滤波器的优化设计,最终达到FIR数字滤波器对语音信号的去噪处理效果.n(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)